CN105682439A - Digital interface sensing apparatus with good anti-electromagnetic radiation performance - Google Patents

Digital interface sensing apparatus with good anti-electromagnetic radiation performance Download PDF

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Publication number
CN105682439A
CN105682439A CN201610112978.6A CN201610112978A CN105682439A CN 105682439 A CN105682439 A CN 105682439A CN 201610112978 A CN201610112978 A CN 201610112978A CN 105682439 A CN105682439 A CN 105682439A
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permalloy
copper
nickel alloy
cover body
digital interface
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邱炎新
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Individual
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/012—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • B32B37/085—Quenching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0036—Heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/08—Alloys with open or closed pores
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/08—Alloys with open or closed pores
    • C22C1/083—Foaming process in molten metal other than by powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0036—Heat treatment
    • B32B2038/0048—Annealing, relaxing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0084—Foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/212—Electromagnetic interference shielding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/754—Self-cleaning

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

The invention discloses a digital interface sensing apparatus with a good anti-electromagnetic radiation performance. The exterior of the digital interface sensing apparatus is covered with an electromagnetic shielding cover body; the cover body adopts a sandwich structure, namely, a foam aluminum-copper-nickel alloy layer is sandwiched between two permalloy plate layers; therefore, high shielding effect on low-frequency-band and high-frequency-band electromagnetic waves can be realized; meanwhile, environmental pollution caused by the electromagnetic radiation of the digital interface sensing apparatus is prevented; the interference on the digital interface sensing apparatus from outside electromagnetic waves is reduced as well; furthermore, the permalloy plate surfaces of the cover body are treated by hydrochloric acid to form a nanosheet super-hydrophobic structure, so that a protection effect of self-cleaning, anti-fogging, anti-freezing and anti-corrosion is realized; and therefore, the service life of the digital interface sensing apparatus can be prolonged.

Description

A kind of anti-electromagnetic radiation digital interface sensing device of good performance
Technical field
The invention belongs to digital interface field, be more particularly to a kind of anti-electromagnetic radiation digital interface sensing device of good performance.
Background technology
In our living environment, various electrical appliances such as TV, microwave oven, electromagnetic oven, computer, mobile phone etc. all can produce electromagnetic wave, and the electromagnetic wave that broadcasting station, television station, satellite communication etc. are launched, all it is present in our living environment. We, while enjoying facility life, are also just together morning and night with electromagnetic wave, coexist peacefully. But, development along with modern technologies, the impact of environment is increased by electromagenetic wave radiation day by day, on the one hand, electromagnetic radiation can affect the healthy of people, and the electronic equipment of surrounding can be caused severe jamming, on the other hand, electromagnetic radiation can reveal information, makes the instruments such as computer without security assurance information.
Digital interface is used for high-speed transfer digital signal, and detection technology is to realize automatization, informationalized basis and premise. Research has the digital interface sensing device of good electrical magnetic shield performance can reduce environmental pollution that electromagnetic radiation brings and the impact on human health. Meanwhile, digital interface sensing device is owing to being power equipment, and the cleaning requirement power-off on surface in its use procedure, this also can bring inconvenience to use.
Summary of the invention
The present invention is directed to background technology Problems existing, it is provided that a kind of anti-electromagnetic radiation digital interface sensing device of good performance.
The purpose of the present invention is achieved through the following technical solutions:
A kind of anti-electromagnetic radiation digital interface sensing device of good performance; the outside of described digital interface sensing device is covered with the cover body of electromagnetic shielding; this cover body adopts permalloy plate and foamed aluminium-copper-nickel alloy to realize electro-magnetic screen function; cover body surface forms the super-drainage structure of nanometer sheet through HCl treatment simultaneously, serves automatically cleaning, erosion-resisting protective effect.
Described cover body is sandwich structure, is specially one layer of foamed aluminium-copper-nickel alloy of folder in the middle of two-layer permalloy plate; The thickness of described permalloy plate is 0.5mm, and this permalloy plate surface is covered by nanometer sheet structure; In this permalloy plate, the ratio of Ni and Fe is 2:3, and add mass fraction respectively 0.5% and 1% Mo, Si element; The thickness of described foamed aluminium-copper-nickel alloy is 3mm, and in this foamed aluminium-copper-nickel alloy, the content of nickel is 5%～40%; Described nanometer sheet structure is described permalloy plate through hydrochloric acid and low-surface-energy 17 fluorine fat in last of the ten Heavenly stems trimethyl-tryptophane is hydride modified obtains.
Preferably, the making of described cover body comprises the following steps:
Step one, the preparation of permalloy plate;
1) determination of Ni content
The middle nickel alloy of abandoning tradition and Langaloy, adopt Ni content 40% low nickel alloy, and wherein add mass fraction respectively 0.5% and 1% Mo, Si element;
2) rolling
Ni and the Fe of molten condition is mixed according to the ratio of 2:3, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, by smelting fusion method obtain permalloy plate through rolling;
3) heat treatment
Heat treatment divides annealing, quenching and tempering, final cooling stage; Annealing stage: permalloy is 1000～1300 DEG C of annealing 5h in protection helium atmosphere; Quenching and tempering stage: make alloy cool down, then coordinate 600 DEG C of high temperings; Final cooling stage: Temperature fall under protection helium atmosphere, obtains permalloy plate after supercooling;
Step 2, the process of permalloy plate surface hydrophobicity structure;
1) permalloy plate is sequentially placed into acetone, ethanol, deionized water for ultrasonic 30min, then dries up with nitrogen;
2) hydrochloric acid solution of first preparation 26.5%, is subsequently placed into HF (38w%) solution, stirs, permalloy is put in solution, 75 DEG C of waters bath with thermostatic control process 10h and take out, and put into drying baker and dry, obtain the nanometer sheet structure on permalloy surface after then rinsing with a large amount of clear water;
3) being dipped into by the permalloy that HCl treatment is crossed in sodium laurate decorating liquid (29mg/mL), be incubated 4h in the drying baker of 90 DEG C, the low-surface-energy completing permalloy surface is modified;
Step 3, the preparation of foamed aluminium-copper-nickel alloy;
1) heat metallic aluminium, copper and mickel respectively to molten condition, form metal mixed liquid according to 1:2:2 ratio;
2) calcium metal adds hybrid metal liquid to be stirred, the metal of molten condition is carried out viscosity adjustment, make the viscosity of melt increase;
3) when viscosity is suitable for foaming, by ZrH2Blast as foaming agent in molten metal, make foaming agent and the abundant Homogeneous phase mixing of molten metal by stirring, in the viscous molten metal of heating, discharge H2, molten metal expands, and obtains foamed aluminium-copper-nickel alloy after cooling;
Step 4, the preparation of electromagnetic shielding cover body;
1) foamed aluminium-copper-nickel alloy is cut into board-like material;
2) smear binding agent on the two sides of foamed aluminium-copper-nickel alloy, permalloy version is bonded together, complete the making of broadband electromagnetic shielding cover body.
The invention have benefit that:
1. the choosing of permalloy, adopts addition Mo, Si element in low nickel alloy, obtains the shielding material that initial permeability is high and not easily saturated, low frequency magnetic field has excellent shield effectiveness; By permalloy prior heat treatment process is improved, by process annealing in protective atmosphere, it is ensured that the purity of material, brightness and hardness; By increasing quenching and tempering stage, the shielding properties of permalloy is made to be largely increased; Adopting foam Solder for Al-Cu Joint Welding-nickel as shielding material, high-frequency electromagnetic shielding performance is greatly improved than the single foam metal of employing; Adopt the shielding material of " sandwich " structure, on the one hand, the electromagnetic wave of low-frequency range and high band is served good shielding action simultaneously, on the other hand, both the Electromagnetic Radiation on Environment having prevented digital interface sensing device pollutes, and decreases again the interference to digital interface sensing device of the external electromagnetic ripple;
2. permalloy surface processes through persalt and low-surface-energy, the nanometer sheet structure of microcosmic can be formed on its surface, this structure can play hydrophobic effect, and digital interface sensing device plays self-cleaning effect, can be good at antifog, Anti-freezing, the effect such as anticorrosive simultaneously.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the following drawings.
Fig. 1 is the cover body structural representation of the present invention.
Detailed description of the invention
Shielding refers to that the electromagnetic energy of restriction internal radiation leaks out interior zone, or prevent external radiation interference from entering a certain region, shielding action is to be realized by a housing being closed by above-mentioned zone, and this housing can make board-like, net like and metal knitted belt etc. The electromagnetic shielding material being currently mainly used mainly has surface conductance shaped material class, filled-in composite class, amorphous metal material class and gas permeable material class.
The shielding principle of low frequency and radio-frequency magnetic shielding is different. The energy of low-frequency electromagnetic wave is made up of magnetic field energy substantially, so what we to shield should be electromagnetic magnetic-field component, low-frequency magnetic shields, and is utilize the pcrmeability of ferromagnetic material high, and magnetic resistance is little, and magnetic field has the characteristic of by-passing realize shielding. Conventional material is have the pure iron plate of high magnetic permeability, electromagnetic steel plate, permalloy plate, amorphous ribbon etc.
Along with frequency improve, electromagnetic energy proportion gradually by magnetic-field component to electric field component tilt, shielding mechanism also therewith gradually by stress armoured magnetic field component turn to stress shielding electric field component. The basic skills of shielding high-frequency electric field interference be by noise spot and by shielded point between add a screen layer, carry out guard shield point interference-free, shielding material can with the good aluminum of electric conductivity, copper, stannum, silver etc.
Carrying out wide band electromagnetic shielding is must take in many equipment design processes, for different materials, different structure, different process is different to electromagnetic shielding effectiveness, the shielding material of the present invention is designed with a kind of similar sandwich structure, realizes electromagnetic shielding with the structural model of one layer of foamed aluminium-copper-nickel alloy of folder in the middle of two-layer permalloy plate.
Metal material is the fields such as the engineering material that electrical equipment is commonly used, extensive application in daily productive life, such as traffic, decoration, machinery, electric power. But in use, corrosion of metal brings huge economic loss to social production, corrosion process be mostly through moisture or metal be in the environment contacted with water, if it is possible to block contacting of water and metal, it is possible to well solve this problem. Super hydrophobic material can be good at preventing the water condensation on its surface and sticking.
The present invention is by conjunction with electromagnetic shielding and super-hydrophobic technology; a kind of anti-electromagnetic radiation digital interface sensing device of good performance is provided; the outside of described digital interface sensing device is covered with the cover body of electromagnetic shielding; this cover body adopts permalloy plate and foamed aluminium-copper-nickel alloy to realize electro-magnetic screen function; cover body surface forms the super-drainage structure of nanometer sheet through HCl treatment simultaneously, serves automatically cleaning, erosion-resisting protective effect.
In order to make those skilled in the art be better understood from the present invention program, below in conjunction with legend the present invention made and further illustrating:
Fig. 1 is the schematic diagram of the cover body structure of the present invention. Wherein, 01 is permalloy plate, and 02 is foamed aluminium-copper-nickel alloy.
Provide below 5 embodiments described digital interface sensing device is described further:
Embodiment 1
A kind of anti-electromagnetic radiation digital interface sensing device of good performance; the outside of described digital interface sensing device is covered with the cover body of electromagnetic shielding; this cover body adopts permalloy plate (01) and foamed aluminium-copper-nickel alloy (02) to realize electro-magnetic screen function; cover body surface forms the super-drainage structure of nanometer sheet through HCl treatment simultaneously, serves automatically cleaning, erosion-resisting protective effect.
Described cover body is sandwich structure, is specially one layer of foamed aluminium-copper-nickel alloy (02) of folder in the middle of two-layer permalloy plate (01); The thickness of described permalloy plate (01) is 0.5mm, and this permalloy plate (01) surface is for be covered by nanometer sheet structure; In this permalloy plate (01), the ratio of Ni and Fe is 2:3, and add mass fraction respectively 0.5% and 1% Mo, Si element; The thickness of described foamed aluminium-copper-nickel alloy (02) is 3mm, the content about 5～40% of nickel in this foamed aluminium-copper-nickel alloy (02); Described nanometer sheet structure is described permalloy plate (01) through hydrochloric acid and low-surface-energy 17 fluorine fat in last of the ten Heavenly stems trimethyl-tryptophane is hydride modified obtains.
Preferably, the making of described cover body comprises the following steps:
Step one, the preparation of permalloy plate;
1) determination of Ni content
The middle nickel alloy of abandoning tradition and Langaloy, adopt the low nickel alloy of Ni content 40%, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, the effect of Mo element mainly increases the resistivity of material, and the effect of Si element mainly increases magnetic saturation;
2) rolling
Ni and the Fe of molten condition is mixed according to the ratio of 2:3, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, by smelting fusion method obtain permalloy plate through rolling;
3) heat treatment
Heat treatment divides annealing, quenching and tempering, final cooling stage; Annealing stage: permalloy is 1000～1300 DEG C of annealing 5h in protection helium atmosphere; Quenching and tempering stage: rationally effective water cooling equipment can make alloy strongly be cooled down, then coordinate 600 DEG C of high temperings, it is possible to improve the shielding properties of permalloy plate, improve its shield effectiveness; Final cooling stage: Temperature fall under protection helium atmosphere, obtains permalloy plate after supercooling;
Step 2, the process of permalloy plate surface hydrophobicity structure;
1) permalloy plate is sequentially placed into acetone, ethanol, deionized water for ultrasonic 30min, then dries up with nitrogen;
2) hydrochloric acid solution of first preparation 26.5%, is subsequently placed into HF (38w%) solution, stirs, permalloy is put in solution, 75 DEG C of waters bath with thermostatic control process 10h and take out, and put into drying baker and dry, obtain the nanometer sheet structure on permalloy surface after then rinsing with a large amount of clear water;
3) being dipped into by the permalloy that HCl treatment is crossed in sodium laurate decorating liquid (29mg/mL), be incubated 4h in the drying baker of 90 DEG C, the low-surface-energy completing permalloy surface is modified;
Step 3, the preparation of foamed aluminium-copper-nickel alloy;
1) heat metallic aluminium, copper and mickel respectively to molten condition, form metal mixed liquid according to 1:2:2 ratio;
2) calcium metal adding hybrid metal liquid to be stirred, the metal of molten condition is carried out viscosity adjustment, make the viscosity of melt increase, can this step most important for form foam metal, and only when viscosity is suitable, bubble is just unlikely to effusion;
3) when viscosity is suitable for foaming, by ZrH2Blast as foaming agent in molten metal, make foaming agent and the abundant Homogeneous phase mixing of molten metal by stirring, in the viscous molten metal of heating, discharge H2, molten metal expands, and obtains foamed aluminium-copper-nickel alloy after cooling;
Step 4, the preparation of electromagnetic shielding cover body;
1) foamed aluminium-copper-nickel alloy is cut into board-like material;
2) smear binding agent on the two sides of foamed aluminium-copper-nickel alloy, permalloy version is bonded together, complete the making of broadband electromagnetic shielding cover body.
Test data
First testing the hydrophobic performance of this cover body, after when permalloy plate, in decorating liquid, temperature retention time 4h processes, its contact angle is 166 degree, and roll angle is less than 5 degree; Aluminum in foamed aluminium-copper-nickel alloy, copper, nickel mass ratio when being 1:2:2, this cover body is carried out electromagnetic shielding test and finds, its electromagnet shield effect is up to 98dB.
Test result shows that this cover body has good super-hydrophobic effect, it is possible to play automatically cleaning, antifog and Anti-freezing effect, digital interface sensing device plays protection and cleaning action, improves the service life of digital interface sensing device;
Electromagnetic shielding aspect, electromagnet shield effect is up to 98dB, it is possible to protection digital interface sensing device electronic devices and components are from the interference of external electromagnetic ripple, and the shielding of self electromagnetism ripple is decreased the electromagnetic pollution of environment by it simultaneously.
Embodiment 2
A kind of anti-electromagnetic radiation digital interface sensing device of good performance; the outside of described digital interface sensing device is covered with the cover body of electromagnetic shielding; this cover body adopts permalloy plate (01) and foamed aluminium-copper-nickel alloy (02) to realize electro-magnetic screen function; cover body surface forms the super-drainage structure of nanometer sheet through HCl treatment simultaneously, serves automatically cleaning, erosion-resisting protective effect.
Described cover body is sandwich structure, is specially one layer of foamed aluminium-copper-nickel alloy (02) of folder in the middle of two-layer permalloy plate (01); The thickness of described permalloy plate (01) is 0.5mm, and this permalloy plate (01) surface is for be covered by nanometer sheet structure; In this permalloy plate (01), the ratio of Ni and Fe is 2:3, and add mass fraction respectively 0.5% and 1% Mo, Si element; The thickness of described foamed aluminium-copper-nickel alloy (02) is 3mm, the content about 5～40% of nickel in this foamed aluminium-copper-nickel alloy (02); Described nanometer sheet structure is described permalloy plate (01) through hydrochloric acid and low-surface-energy 17 fluorine fat in last of the ten Heavenly stems trimethyl-tryptophane is hydride modified obtains.
Preferably, the making of described cover body comprises the following steps:
Step one, the preparation of permalloy plate;
1) determination of Ni content
The middle nickel alloy of abandoning tradition and Langaloy, adopt the low nickel alloy of Ni content 40%, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, the effect of Mo element mainly increases the resistivity of material, and the effect of Si element mainly increases magnetic saturation;
2) rolling
Ni and the Fe of molten condition is mixed according to the ratio of 2:3, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, by smelting fusion method obtain permalloy plate through rolling;
3) heat treatment
Heat treatment divides annealing, quenching and tempering, final cooling stage; Annealing stage: permalloy is 1000～1300 DEG C of annealing 5h in protection helium atmosphere; Quenching and tempering stage: rationally effective water cooling equipment can make alloy strongly be cooled down, then coordinate 600 DEG C of high temperings, it is possible to improve the shielding properties of permalloy plate, improve its shield effectiveness; Final cooling stage: Temperature fall under protection helium atmosphere, obtains permalloy plate after supercooling;
Step 2, the process of permalloy plate surface hydrophobicity structure;
1) permalloy plate is sequentially placed into acetone, ethanol, deionized water for ultrasonic 30min, then dries up with nitrogen;
2) hydrochloric acid solution of first preparation 26.5%, is subsequently placed into HF (38w%) solution, stirs, permalloy is put in solution, 75 DEG C of waters bath with thermostatic control process 10h and take out, and put into drying baker and dry, obtain the nanometer sheet structure on permalloy surface after then rinsing with a large amount of clear water;
3) being dipped into by the permalloy that HCl treatment is crossed in sodium laurate decorating liquid (29mg/mL), be incubated 3.5h in the drying baker of 90 DEG C, the low-surface-energy completing permalloy surface is modified;
Step 3, the preparation of foamed aluminium-copper-nickel alloy;
1) heat metallic aluminium, copper and mickel respectively to molten condition, form metal mixed liquid according to 1:1:2 ratio;
2) calcium metal adding hybrid metal liquid to be stirred, the metal of molten condition is carried out viscosity adjustment, make the viscosity of melt increase, can this step most important for form foam metal, and only when viscosity is suitable, bubble is just unlikely to effusion;
3) when viscosity is suitable for foaming, by ZrH2Blast as foaming agent in molten metal, make foaming agent and the abundant Homogeneous phase mixing of molten metal by stirring, in the viscous molten metal of heating, discharge H2, molten metal expands, and obtains foamed aluminium-copper-nickel alloy after cooling;
Step 4, the preparation of electromagnetic shielding cover body;
1) foamed aluminium-copper-nickel alloy is cut into board-like material;
2) smear binding agent on the two sides of foamed aluminium-copper-nickel alloy, permalloy version is bonded together, complete the making of broadband electromagnetic shielding cover body.
Test data
First testing the hydrophobic performance of this cover body, after when permalloy plate, in decorating liquid, temperature retention time 3.5h processes, its contact angle is 164 degree, and roll angle is less than 5 degree; Aluminum in foamed aluminium-copper-nickel alloy, copper, nickel mass ratio when being 1:1:2, this cover body is carried out electromagnetic shielding test and finds, its electromagnet shield effect is up to 96dB.
Test result shows that this cover body has good super-hydrophobic effect, it is possible to play automatically cleaning, antifog and Anti-freezing effect, and digital interface sensing device plays protection and cleaning action;
Electromagnetic shielding aspect, electromagnet shield effect is up to 96dB, it is possible to protection digital interface sensing device electronic devices and components are from the interference of external electromagnetic ripple, and the shielding of self electromagnetism ripple is decreased the electromagnetic pollution of environment by it simultaneously.
Embodiment 3
A kind of anti-electromagnetic radiation digital interface sensing device of good performance; the outside of described digital interface sensing device is covered with the cover body of electromagnetic shielding; this cover body adopts permalloy plate (01) and foamed aluminium-copper-nickel alloy (02) to realize electro-magnetic screen function; cover body surface forms the super-drainage structure of nanometer sheet through HCl treatment simultaneously, serves automatically cleaning, erosion-resisting protective effect.
Described cover body is sandwich structure, is specially one layer of foamed aluminium-copper-nickel alloy (02) of folder in the middle of two-layer permalloy plate (01); The thickness of described permalloy plate (01) is 0.5mm, and this permalloy plate (01) surface is for be covered by nanometer sheet structure; In this permalloy plate (01), the ratio of Ni and Fe is 2:3, and add mass fraction respectively 0.5% and 1% Mo, Si element; The thickness of described foamed aluminium-copper-nickel alloy (02) is 3mm, the content about 5～40% of nickel in this foamed aluminium-copper-nickel alloy (02); Described nanometer sheet structure is described permalloy plate (01) through hydrochloric acid and low-surface-energy 17 fluorine fat in last of the ten Heavenly stems trimethyl-tryptophane is hydride modified obtains.
Preferably, the making of described cover body comprises the following steps:
Step one, the preparation of permalloy plate;
1) determination of Ni content
The middle nickel alloy of abandoning tradition and Langaloy, adopt the low nickel alloy of Ni content 40%, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, the effect of Mo element mainly increases the resistivity of material, and the effect of Si element mainly increases magnetic saturation;
2) rolling
Ni and the Fe of molten condition is mixed according to the ratio of 2:3, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, by smelting fusion method obtain permalloy plate through rolling;
3) heat treatment
Heat treatment divides annealing, quenching and tempering, final cooling stage; Annealing stage: permalloy is 1000～1300 DEG C of annealing 5h in protection helium atmosphere; Quenching and tempering stage: rationally effective water cooling equipment can make alloy strongly be cooled down, then coordinate 600 DEG C of high temperings, it is possible to improve the shielding properties of permalloy plate, improve its shield effectiveness; Final cooling stage: Temperature fall under protection helium atmosphere, obtains permalloy plate after supercooling;
Step 2, the process of permalloy plate surface hydrophobicity structure;
1) permalloy plate is sequentially placed into acetone, ethanol, deionized water for ultrasonic 30min, then dries up with nitrogen;
2) hydrochloric acid solution of first preparation 26.5%, is subsequently placed into HF (38w%) solution, stirs, permalloy is put in solution, 75 DEG C of waters bath with thermostatic control process 10h and take out, and put into drying baker and dry, obtain the nanometer sheet structure on permalloy surface after then rinsing with a large amount of clear water;
3) being dipped into by the permalloy that HCl treatment is crossed in sodium laurate decorating liquid (29mg/mL), be incubated 2.5h in the drying baker of 90 DEG C, the low-surface-energy completing permalloy surface is modified;
Step 3, the preparation of foamed aluminium-copper-nickel alloy;
1) heat metallic aluminium, copper and mickel respectively to molten condition, form metal mixed liquid according to 2:1:2 ratio;
2) calcium metal adding hybrid metal liquid to be stirred, the metal of molten condition is carried out viscosity adjustment, make the viscosity of melt increase, can this step most important for form foam metal, and only when viscosity is suitable, bubble is just unlikely to effusion;
3) when viscosity is suitable for foaming, by ZrH2Blast as foaming agent in molten metal, make foaming agent and the abundant Homogeneous phase mixing of molten metal by stirring, in the viscous molten metal of heating, discharge H2, molten metal expands, and obtains foamed aluminium-copper-nickel alloy after cooling;
Step 4, the preparation of electromagnetic shielding cover body;
1) foamed aluminium-copper-nickel alloy is cut into board-like material;
2) smear binding agent on the two sides of foamed aluminium-copper-nickel alloy, permalloy version is bonded together, complete the making of broadband electromagnetic shielding cover body.
Test data
First testing the hydrophobic performance of this cover body, after when permalloy plate, in decorating liquid, temperature retention time 2.5h processes, its contact angle is 162 degree, and roll angle is less than 5 degree; Aluminum in foamed aluminium-copper-nickel alloy, copper, nickel mass ratio when being 2:1:2, this cover body is carried out electromagnetic shielding test and finds, its electromagnet shield effect is up to 94dB.
Test result shows that this cover body has good super-hydrophobic effect, it is possible to play automatically cleaning, antifog and Anti-freezing effect, and digital interface sensing device plays protection and cleaning action; Electromagnetic shielding aspect, electromagnet shield effect is up to 94dB, it is possible to protection digital interface sensing device electronic devices and components are from the interference of external electromagnetic ripple, and the shielding of self electromagnetism ripple is decreased the electromagnetic pollution of environment by it simultaneously.
Embodiment 4
A kind of anti-electromagnetic radiation digital interface sensing device of good performance; the outside of described digital interface sensing device is covered with the cover body of electromagnetic shielding; this cover body adopts permalloy plate (01) and foamed aluminium-copper-nickel alloy (02) to realize electro-magnetic screen function; cover body surface forms the super-drainage structure of nanometer sheet through HCl treatment simultaneously, serves automatically cleaning, erosion-resisting protective effect.
Described cover body is sandwich structure, is specially one layer of foamed aluminium-copper-nickel alloy (02) of folder in the middle of two-layer permalloy plate (01); The thickness of described permalloy plate (01) is 0.5mm, and this permalloy plate (01) surface is for be covered by nanometer sheet structure; In this permalloy plate (01), the ratio of Ni and Fe is 2:3, and add mass fraction respectively 0.5% and 1% Mo, Si element; The thickness of described foamed aluminium-copper-nickel alloy (02) is 3mm, the content about 5～40% of nickel in this foamed aluminium-copper-nickel alloy (02); Described nanometer sheet structure is described permalloy plate (01) through hydrochloric acid and low-surface-energy 17 fluorine fat in last of the ten Heavenly stems trimethyl-tryptophane is hydride modified obtains.
Preferably, the making of described cover body comprises the following steps:
Step one, the preparation of permalloy plate;
1) determination of Ni content
The middle nickel alloy of abandoning tradition and Langaloy, adopt the low nickel alloy of Ni content 40%, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, the effect of Mo element mainly increases the resistivity of material, and the effect of Si element mainly increases magnetic saturation;
2) rolling
Ni and the Fe of molten condition is mixed according to the ratio of 2:3, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, by smelting fusion method obtain permalloy plate through rolling;
3) heat treatment
Heat treatment divides annealing, quenching and tempering, final cooling stage; Annealing stage: permalloy is 1000～1300 DEG C of annealing 5h in protection helium atmosphere; Quenching and tempering stage: rationally effective water cooling equipment can make alloy strongly be cooled down, then coordinate 600 DEG C of high temperings, it is possible to improve the shielding properties of permalloy plate, improve its shield effectiveness; Final cooling stage: Temperature fall under protection helium atmosphere, obtains permalloy plate after supercooling;
Step 2, the process of permalloy plate surface hydrophobicity structure;
1) permalloy plate is sequentially placed into acetone, ethanol, deionized water for ultrasonic 30min, then dries up with nitrogen;
2) hydrochloric acid solution of first preparation 26.5%, is subsequently placed into HF (38w%) solution, stirs, permalloy is put in solution, 75 DEG C of waters bath with thermostatic control process 10h and take out, and put into drying baker and dry, obtain the nanometer sheet structure on permalloy surface after then rinsing with a large amount of clear water;
3) being dipped into by the permalloy that HCl treatment is crossed in sodium laurate decorating liquid (29mg/mL), be incubated 7h in the drying baker of 90 DEG C, the low-surface-energy completing permalloy surface is modified;
Step 3, the preparation of foamed aluminium-copper-nickel alloy;
1) heat metallic aluminium, copper and mickel respectively to molten condition, form metal mixed liquid according to 1:2:2 ratio;
2) calcium metal adding hybrid metal liquid to be stirred, the metal of molten condition is carried out viscosity adjustment, make the viscosity of melt increase, can this step most important for form foam metal, and only when viscosity is suitable, bubble is just unlikely to effusion;
3) when viscosity is suitable for foaming, by ZrH2Blast as foaming agent in molten metal, make foaming agent and the abundant Homogeneous phase mixing of molten metal by stirring, in the viscous molten metal of heating, discharge H2, molten metal expands, and obtains foamed aluminium-copper-nickel alloy after cooling;
Step 4, the preparation of electromagnetic shielding cover body;
1) foamed aluminium-copper-nickel alloy is cut into board-like material;
2) smear binding agent on the two sides of foamed aluminium-copper-nickel alloy, permalloy version is bonded together, complete the making of broadband electromagnetic shielding cover body.
Test data
First testing the hydrophobic performance of this cover body, after when permalloy plate, in decorating liquid, temperature retention time 7h processes, its contact angle is 160 degree, and roll angle is less than 7 degree; Aluminum in foamed aluminium-copper-nickel alloy, copper, nickel mass ratio when being 1:2:2, this cover body is carried out electromagnetic shielding test and finds, its electromagnet shield effect is up to 98dB.
Test result shows that this cover body has good super-hydrophobic effect, it is possible to play automatically cleaning, antifog and Anti-freezing effect, and digital interface sensing device plays protection and cleaning action; Electromagnetic shielding aspect, electromagnet shield effect is up to 98dB, it is possible to protection digital interface sensing device electronic devices and components are from the interference of external electromagnetic ripple, and the shielding of self electromagnetism ripple is decreased the electromagnetic pollution of environment by it simultaneously.
Embodiment 5
A kind of anti-electromagnetic radiation digital interface sensing device of good performance; the outside of described digital interface sensing device is covered with the cover body of electromagnetic shielding; this cover body adopts permalloy plate (01) and foamed aluminium-copper-nickel alloy (02) to realize electro-magnetic screen function; cover body surface forms the super-drainage structure of nanometer sheet through HCl treatment simultaneously, serves automatically cleaning, erosion-resisting protective effect.
Described cover body is sandwich structure, is specially one layer of foamed aluminium-copper-nickel alloy (02) of folder in the middle of two-layer permalloy plate (01); The thickness of described permalloy plate (01) is 0.5mm, and this permalloy plate (01) surface is for be covered by nanometer sheet structure; In this permalloy plate (01), the ratio of Ni and Fe is 2:3, and add mass fraction respectively 0.5% and 1% Mo, Si element; The thickness of described foamed aluminium-copper-nickel alloy (02) is 3mm, the content about 5～40% of nickel in this foamed aluminium-copper-nickel alloy (02); Described nanometer sheet structure is described permalloy plate (01) through hydrochloric acid and low-surface-energy 17 fluorine fat in last of the ten Heavenly stems trimethyl-tryptophane is hydride modified obtains.
Preferably, the making of described cover body comprises the following steps:
Step one, the preparation of permalloy plate;
1) determination of Ni content
The middle nickel alloy of abandoning tradition and Langaloy, adopt the low nickel alloy of Ni content 40%, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, the effect of Mo element mainly increases the resistivity of material, and the effect of Si element mainly increases magnetic saturation;
2) rolling
Ni and the Fe of molten condition is mixed according to the ratio of 2:3, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, by smelting fusion method obtain permalloy plate through rolling;
3) heat treatment
Heat treatment divides annealing, quenching and tempering, final cooling stage; Annealing stage: permalloy is 1000～1300 DEG C of annealing 5h in protection helium atmosphere; Quenching and tempering stage: rationally effective water cooling equipment can make alloy strongly be cooled down, then coordinate 600 DEG C of high temperings, it is possible to improve the shielding properties of permalloy plate, improve its shield effectiveness; Final cooling stage: Temperature fall under protection helium atmosphere, obtains permalloy plate after supercooling;
Step 2, the process of permalloy plate surface hydrophobicity structure;
1) permalloy plate is sequentially placed into acetone, ethanol, deionized water for ultrasonic 30min, then dries up with nitrogen;
2) hydrochloric acid solution of first preparation 26.5%, is subsequently placed into HF (38w%) solution, stirs, permalloy is put in solution, 75 DEG C of waters bath with thermostatic control process 10h and take out, and put into drying baker and dry, obtain the nanometer sheet structure on permalloy surface after then rinsing with a large amount of clear water;
3) being dipped into by the permalloy that HCl treatment is crossed in sodium laurate decorating liquid (29mg/mL), be incubated 10h in the drying baker of 90 DEG C, the low-surface-energy completing permalloy surface is modified;
Step 3, the preparation of foamed aluminium-copper-nickel alloy;
1) heat metallic aluminium, copper and mickel respectively to molten condition, form metal mixed liquid according to 3:1:2 ratio;
2) calcium metal adding hybrid metal liquid to be stirred, the metal of molten condition is carried out viscosity adjustment, make the viscosity of melt increase, can this step most important for form foam metal, and only when viscosity is suitable, bubble is just unlikely to effusion;
3) when viscosity is suitable for foaming, by ZrH2Blast as foaming agent in molten metal, make foaming agent and the abundant Homogeneous phase mixing of molten metal by stirring, in the viscous molten metal of heating, discharge H2, molten metal expands, and obtains foamed aluminium-copper-nickel alloy after cooling;
Step 4, the preparation of electromagnetic shielding cover body;
1) foamed aluminium-copper-nickel alloy is cut into board-like material;
2) smear binding agent on the two sides of foamed aluminium-copper-nickel alloy, permalloy version is bonded together, complete the making of broadband electromagnetic shielding cover body.
Test data
First testing the hydrophobic performance of this cover body, after when permalloy plate, in decorating liquid, temperature retention time 10h processes, its contact angle is 158 degree, and roll angle is less than 10 degree; Aluminum in foamed aluminium-copper-nickel alloy, copper, nickel mass ratio when being 3:1:2, this cover body is carried out electromagnetic shielding test and finds, its electromagnet shield effect is up to 91dB.
Test result shows that this cover body has good super-hydrophobic effect, it is possible to play automatically cleaning, antifog and Anti-freezing effect, and digital interface sensing device plays protection and cleaning action; Electromagnetic shielding aspect, electromagnet shield effect is up to 91dB, it is possible to protection digital interface sensing device electronic devices and components are from the interference of external electromagnetic ripple, and the shielding of self electromagnetism ripple is decreased the electromagnetic pollution of environment by it simultaneously.
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope that the invention discloses; technological invention and inventive concept thereof according to the present invention are equal to replacement or are changed, and all should be encompassed within protection scope of the present invention.

Claims (2)

1. an anti-electromagnetic radiation digital interface sensing device of good performance, it is characterized in that, the outside of described digital interface sensing device is covered with the cover body of electromagnetic shielding, and this cover body is sandwich structure, is specially one layer of foamed aluminium-copper-nickel alloy of folder in the middle of two-layer permalloy plate; The thickness of described permalloy plate is 0.5mm, and this permalloy plate surface is covered by nanometer sheet structure; In this permalloy plate, the ratio of Ni and Fe is 2:3, and add mass fraction respectively 0.5% and 1% Mo, Si element; The thickness of described foamed aluminium-copper-nickel alloy is 3mm, and in this foamed aluminium-copper-nickel alloy, the content of nickel is 5%～40%; Described nanometer sheet structure is described permalloy plate through hydrochloric acid and low-surface-energy 17 fluorine fat in last of the ten Heavenly stems trimethyl-tryptophane is hydride modified obtains.
2. digital interface sensing device according to claim 1, it is characterised in that the making of described cover body comprises the following steps:
Step one, the preparation of permalloy plate;
1) determination of Ni content
The middle nickel alloy of abandoning tradition and Langaloy, adopt Ni content 40% low nickel alloy, and wherein add mass fraction respectively 0.5% and 1% Mo, Si element;
2) rolling
Ni and the Fe of molten condition is mixed according to the ratio of 2:3, and add wherein mass fraction respectively 0.5% and 1% Mo, Si element, by smelting fusion method obtain permalloy plate through rolling;
3) heat treatment
Heat treatment divides annealing, quenching and tempering, final cooling stage; Annealing stage: permalloy is 1000～1300 DEG C of annealing 5h in protection helium atmosphere; Quenching and tempering stage: make alloy cool down, then coordinate 600 DEG C of high temperings; Final cooling stage: Temperature fall under protection helium atmosphere, obtains permalloy plate after supercooling;
Step 2, the process of permalloy plate surface hydrophobicity structure;
1) permalloy plate is sequentially placed into acetone, ethanol, deionized water for ultrasonic 30min, then dries up with nitrogen;
2) hydrochloric acid solution of first preparation 26.5%, is subsequently placed into HF (38w%) solution, stirs, permalloy is put in solution, 75 DEG C of waters bath with thermostatic control process 10h and take out, and put into drying baker and dry, obtain the nanometer sheet structure on permalloy surface after then rinsing with a large amount of clear water;
3) being dipped into by the permalloy that HCl treatment is crossed in sodium laurate decorating liquid (29mg/mL), be incubated 4h in the drying baker of 90 DEG C, the low-surface-energy completing permalloy surface is modified;
Step 3, the preparation of foamed aluminium-copper-nickel alloy;
1) heat metallic aluminium, copper and mickel respectively to molten condition, form metal mixed liquid according to 1:2:2 ratio;
2) calcium metal adds hybrid metal liquid to be stirred, the metal of molten condition is carried out viscosity adjustment, make the viscosity of melt increase;
3) when viscosity is suitable for foaming, by ZrH2Blast as foaming agent in molten metal, make foaming agent and the abundant Homogeneous phase mixing of molten metal by stirring, in the viscous molten metal of heating, discharge H2, molten metal expands, and obtains foamed aluminium-copper-nickel alloy after cooling;
Step 4, the preparation of electromagnetic shielding cover body;
1) foamed aluminium-copper-nickel alloy is cut into board-like material;
2) smear binding agent on the two sides of foamed aluminium-copper-nickel alloy, permalloy version is bonded together, complete the making of broadband electromagnetic shielding cover body.
CN201610112978.6A 2016-02-29 2016-02-29 Digital interface sensing apparatus with good anti-electromagnetic radiation performance Pending CN105682439A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1669688A (en) * 2002-11-26 2005-09-21 昆明理工大学 Continuous production method for foamed metal casting and rolling
CN101905326A (en) * 2010-07-22 2010-12-08 东北大学 Method for manufacturing foamed aluminum sandwich plate
CN102291968A (en) * 2010-08-25 2011-12-21 兰州大学 Magnetic field shielding case
CN104195404A (en) * 2014-09-12 2014-12-10 钢铁研究总院 Wide-temperature-range high-strength constant-elasticity alloy and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1669688A (en) * 2002-11-26 2005-09-21 昆明理工大学 Continuous production method for foamed metal casting and rolling
CN101905326A (en) * 2010-07-22 2010-12-08 东北大学 Method for manufacturing foamed aluminum sandwich plate
CN102291968A (en) * 2010-08-25 2011-12-21 兰州大学 Magnetic field shielding case
CN104195404A (en) * 2014-09-12 2014-12-10 钢铁研究总院 Wide-temperature-range high-strength constant-elasticity alloy and preparation method thereof

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李微,梁慧,陈荐,杨嘉伟,李贤泽: "多孔Cu-Ni-Al合金的高温压缩变形行为及本构关系", 《机械工程学报》 *
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