CN105586590A - Magnesium alloy material, terminal, communication device, vehicle and preparing method - Google Patents
Magnesium alloy material, terminal, communication device, vehicle and preparing method Download PDFInfo
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- CN105586590A CN105586590A CN201410573006.8A CN201410573006A CN105586590A CN 105586590 A CN105586590 A CN 105586590A CN 201410573006 A CN201410573006 A CN 201410573006A CN 105586590 A CN105586590 A CN 105586590A
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Abstract
The invention is suitable for the field of materials and provides a magnesium alloy material which comprises a magnesium alloy matrix, a zinc layer attached to the surface of the magnesium alloy matrix and a passive film attached to the surface of the zinc layer. By means of the magnesium alloy material provided by the embodiment, the corrosion-resisting performance of the magnesium alloy material is good, and the resistance is low.
Description
Technical field
The present invention relates to Material Field, relate in particular to magnesium alloy materials, terminal, communication apparatus, the vehiclesAnd preparation method.
Background technology
Magnesium alloy is the alloy that adds other element compositions taking magnesium as base. It has that density is little, specific strength is high,Elastic modelling quantity is large, shock absorbing is good, the load-carrying ability that withstands shocks is than advantages such as aluminium alloy are large. Be mainly used in aviation,The industrial departments such as space flight, transport, chemical industry, rocket.
Existing magnesium alloy materials, be generally by magnesium alloy substrate is carried out epithelium processing or electro-coppering,Nickel, chromium processing obtain, and this magnesium alloy materials exists salt fog poor performance, the problem that resistance is high.
Summary of the invention
The embodiment of the present invention provides a kind of magnesium alloy materials, is intended to solve existing magnesium alloy materials salt fog performancePoor, the problem that resistance is high.
The embodiment of the present invention is achieved in that a kind of magnesium alloy materials, comprising:
Magnesium alloy substrate;
Zinc layer, is attached to described magnesium alloy matrix surface; And
Passivating film, is attached to described zinc layer surface.
The present invention also provides a kind of mobile terminal, includes termination support and/or terminal connector, its featureBe, described termination support and/or terminal connector are in whole or in part by above-mentioned magnesium alloy materials systemBecome.
The present invention also provides a kind of communication apparatus, comprises equipment support members and/or equipment connection part, and its feature existsIn, described equipment support members and/or equipment connection part are closed by magnesium as claimed in claim 1 in whole or in partGold copper-base alloy is made.
The present invention also provides a kind of vehicles, comprises vehicles support member and/or vehicles connector,It is characterized in that, described vehicles support member and/or vehicles connector are by as claimed in claim 1Magnesium alloy materials is made.
The present invention also provides a kind of preparation method of magnesium alloy materials, it is characterized in that, described method comprise asLower step:
Pre-zinc-plated step: magnesium alloy substrate is placed in to pre-galvanizing solution, electroplates at described magnesium alloy matrix surfaceForm the pre-zinc coat of one deck;
Zinc-plated step: the magnesium alloy substrate through described pre-zinc-plated step process is placed in to galvanizing solution, in instituteState pre-zinc coat electroplating surface and form one deck zinc coat;
Passivation step: the magnesium alloy substrate through described zinc-plated step process is placed in to passivating solution, in described platingZinc layer surface forms one deck passivating film.
The magnesium alloy materials that the embodiment of the present invention provides, its corrosion resistance and good, resistance is low.
Brief description of the drawings
Fig. 1 is the tangent plane structural representation of the first magnesium alloy materials of providing of the embodiment of the present invention 1;
Fig. 2 is the tangent plane structural representation of the second magnesium alloy materials of providing of the embodiment of the present invention 1;
Fig. 3 is preparation method's flow chart of the magnesium alloy materials that provides of the embodiment of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and realityExecute example, the present invention is further elaborated. Only should be appreciated that specific embodiment described hereinOnly, in order to explain the present invention, be not intended to limit the present invention.
The magnesium alloy materials that the embodiment of the present invention provides is attached with zinc layer and passivating film on magnesium alloy substrate, makesObtain magnesium alloy materials corrosion resistance and good, resistance is low.
Described magnesium alloy substrate in the embodiment of the present invention is the alloy material that comprises magnesium, in the invention processIn example, the salt fog performance of magnesium alloy materials adopts GB/T10125-2012/ISO9227:2006 " artificial atmosphereCorrosion test salt spray test " in method of testing test, observe magnesium alloy substrate and corrosion do not occurFor a long time, this cycle observing time is 2,6,24,48,96,144,168,240,480 (h);Electric conductivity adopts the resistance of the digital microhmmeter test of ZY9987 type sample, and the probe diameter of probe is2mm (millimeter), the power that is applied to probe are 500N (newton), and per sample (p.s.) product are got 2 points and measured,Then get the resistance mean value of 2 points as the resistance of test agent, in embodiments of the present invention, carrying out saltBefore mist performance test and after test, respectively the resistive performance of sample is tested; Adhesion performance adopts ISOMethod of testing in 2409-2007 (E) " paint and varnish-cross cut test " is tested.
Embodiment 1:
With reference to figure 1 and Fig. 2, the tangent plane structure of the first magnesium alloy materials providing for the embodiment of the present invention 1The tangent plane structural representation of schematic diagram and the second magnesium alloy materials, for ease of describing, only illustrates and the present inventionRelevant part, details are as follows.
Magnesium alloy materials comprises magnesium alloy substrate 1, is attached to the zinc layer 2 of magnesium alloy substrate 1, and is attached toThe passivating film 3 of zinc layer 2.
In embodiments of the present invention, the thickness of zinc layer 2 is 1.4-7.8 μ m, preferably 5 μ m, and density is0.71～0.78㎎·㎝-2·μm-1, preferably 0.71 ㎎ ㎝-2·μm-1。
In embodiments of the present invention, the thickness of passivating film 3 is 0.2-0.6 μ m, preferably 0.4 μ m.
Magnesium alloy materials in above-described embodiment, its salt fog performance at least can reach 96h, and salt fog performance is surveyedResistance before examination is all below 0.8m Ω, and the resistance after salt fog performance test is all below 1.0m Ω, through knotAfter performance test all there is not the phenomenon that coating comes off in magnesium alloy materials surface with joint efforts, its corrosion resistance and good,Resistance is little, and adhesion is strong.
Embodiment 2:
A kind of mobile terminal, comprises termination support and/or terminal connector, and termination support and/or terminal connectThe all or part of employing magnesium alloy materials of fitting is made.
In embodiments of the present invention, described termination support comprises shell or the support of mobile terminal, described inShell is mobile terminal outermost layer structural member, and described support is passive framework in mobile terminal.
In embodiments of the present invention, described terminal connector comprises screw, the screw etc. in mobile terminal.
In embodiments of the present invention, with reference to Fig. 1 and 2, described magnesium alloy materials comprises magnesium alloy substrate 1, attachedThe zinc layer 2 in magnesium alloy substrate 1, and be attached to the passivating film 3 of zinc layer 2.
In embodiments of the present invention, the thickness of 1 zinc layer is 1.4-7.8 μ m, preferably 5 μ m, and density is0.71～0.78㎎·㎝-2·μm-1, preferably 0.71 ㎎ ㎝-2·μm-1。
In embodiments of the present invention, the thickness of passivating film 2 is 0.2-0.6 μ m, preferably 0.4 μ m.
In embodiments of the present invention, described mobile terminal include but not limited to mobile phone, personal computer,Or personal digital assistant (PDA).
In embodiments of the present invention, the magnesium that the termination support of described mobile terminal and/or terminal connector adoptAlloy material, has the good performances such as quality is light, salt fog is good, resistance is little, makes mobile terminal moreLight, corrosion-resistant and the loss of signal is little.
Embodiment 3:
A kind of communication apparatus, comprises equipment support members and/or equipment connection part, and equipment support members and/or equipment connectThe all or part of employing magnesium alloy materials of fitting is made.
In embodiments of the present invention, described equipment support members comprises shell, support or the inside of communication apparatusThe frame structure of components and parts,, described shell is communication apparatus or outermost layer structural member, described support is for logicalPassive framework in news equipment, the frame structure of described internal component as the shell of wave filter andFrame etc.
In embodiments of the present invention, described equipment connection part comprises screw, the screw etc. in communication apparatus.
As one embodiment of the invention, with reference to Fig. 1 and 2, described magnesium alloy materials comprises magnesium alloy substrate 1,Be attached to the zinc layer 2 of magnesium alloy substrate 1, and be attached to the passivating film 3 of zinc layer 2.
In embodiments of the present invention, the thickness of zinc layer 1 is 1.4-7.8 μ m, preferably 5 μ m, and density is0.71～0.78㎎·㎝-2·μm-1, preferably 0.71 ㎎ ㎝-2·μm-1。
In embodiments of the present invention, the thickness of passivating film 2 is 0.2-0.6 μ m, preferably 0.4 μ m.
In embodiments of the present invention, described mobile terminal includes but not limited to base station, modem or communicationTransmitter.
In embodiments of the present invention, the magnesium that the equipment support members of described communication apparatus and/or equipment connection part adoptAlloy material, has the good performances such as quality is light, salt fog is good, resistance is little, makes communication apparatus moreLight, corrosion-resistant and the loss of signal is little.
Embodiment 4
A kind of vehicles, comprise vehicles support member and/or vehicles connector, and the vehicles supportThe all or part of employing magnesium alloy materials of part and/or vehicles connector is made.
In embodiments of the present invention, vehicles support member comprises shell, support or the inside of the vehiclesThe frame structure of components and parts, described shell is communication apparatus or outermost layer structural member, described support is communicationPassive framework in equipment, the frame structure of described internal component is as outside engine housing, motorShell etc.
In embodiments of the present invention, described vehicles connector comprises screw, the screw etc. in the vehicles.
As one embodiment of the invention, with reference to Fig. 1 and 2, described magnesium alloy materials comprises magnesium alloy substrate 1,Be attached to the zinc layer 2 of magnesium alloy substrate 1, and be attached to the passivating film 3 of zinc layer 2.
In embodiments of the present invention, the thickness of zinc layer 2 is 1.4-7.8 μ m, preferably 5 μ m, and density is0.71～0.78㎎·㎝-2·μm-1, preferably 0.71 ㎎ ㎝-2·μm-1。
In embodiments of the present invention, the thickness of passivating film 3 is 0.2-0.6 μ m, preferably 0.4 μ m.
In embodiments of the present invention, the described vehicles include but not limited to automobile and track vehicle, asSubway or train.
In embodiments of the present invention, the vehicles support member of the described vehicles and/or vehicles connectorThe magnesium alloy materials adopting, has the performance that quality is light, salt fog is good, makes the vehicles lighter,Reduce in the process of moving to use consuming, corrosion-resistant in use procedure.
Fig. 3 shows the preparation method's of the magnesium alloy materials that the embodiment of the present invention provides realization flow, describes in detailAs follows:
Pre-treatment step: for removing the spot on magnesium alloy substrate 1 surface, smooth magnesium alloy substrate 1 surface.
In embodiments of the present invention, described spot is included in the greasy dirt attaching in process, and in processingThe oxide and the burr etc. that in process, form, carry out pretreated step to magnesium alloy and adopt prior art commonProcessing method, generally comprise degreasing, alkaline etching, edging and activation. Certainly, in other embodiments of the inventionIn, pre-treatment step can also comprise other place to go magnesium alloy substrate 1 surface blots, smooth magnesium alloy substrateThe steps such as 1 surface.
Pre-zinc-plated step: magnesium alloy substrate 1 is placed in to pre-galvanizing solution, on described magnesium alloy substrate 1 surfaceElectroplate and form the pre-zinc coat of one deck; Pre-zinc coat, magnesium alloy substrate 1 is isolated from the outside, prevents follow-up platingIn zinc step there is chemical reaction in galvanizing solution and magnesium alloy substrate 1.
In embodiments of the present invention, pre-galvanizing solution comprises following material and content: NaOH/potassium hydroxide10-100g/L, zinc oxide 5-14g/L, preplating complexing agent 5-100g/L, potash 0-30g/L, and pass throughNaOH/potassium hydroxide regulates PH to 7.5～8.5.
As one embodiment of the present of invention, preplating complexing agent is HEDP (hydroxy ethylene diphosphonic acid) waterThe mixed aqueous solution of solution, HEDP and carbonate or the aqueous solution that contains CN-, as water-soluble in CymagLiquid, for forming complex compound with the zinc ion of pre-galvanizing solution, prevents the magnesium simple substance in magnesium alloy substrate 1With zinc ion generation displacement reaction in pre-plating liquor and be dissolved in pre-galvanizing solution.
In embodiments of the present invention, in pre-zinc-plated step, using magnesium alloy substrate 1 as negative electrode, zine plate/Iron plate is as anode, and the electric current that is applied to magnesium alloy substrate 1 is 1-4A/dm2, be 3～30min conduction time.
Zinc-plated step: the magnesium alloy substrate 1 through described pre-zinc-plated step process is placed in to galvanizing solution,Described zinc layer electroplating surface forms one deck zinc coat.
In embodiments of the present invention, galvanizing solution comprises following material and content: NaOH/potassium hydroxide100-200g/L, zinc oxide 7-60g/L.
In embodiments of the present invention, in zinc-plated step, using magnesium alloy substrate 1 as negative electrode, zine plate/Iron plate is as anode, and the electric current that is applied to magnesium alloy substrate 1 is 0.5-6A/dm2, be 5～60 conduction timeMinute.
As a preferred embodiment of the invention, galvanizing solution also comprises the zinc-plated complexing agent of 1.5-6ml/L, usesIn the uniformity and the upper plating speed that ensure coating.
In embodiments of the present invention, zinc-plated complexing agent is formed by nitride and epoxychloropropane condensation, as DEComplexing agent (being formed by epoxychloropropane and dimethylamine condensation), DPE-3 complexing agent (by dimethylaminopropylamine,Ethylenediamine and epoxychloropropane condensation form) etc.
As another preferred embodiment of the present invention, galvanizing solution also comprises the key light agent of 1-15ml/L, forIncrease the glossiness of coating.
In embodiments of the present invention, the key light agent thiocarbamide of concentration 0.1-1% that is weight percentage.
As another preferred embodiment of the present invention, galvanizing solution also comprises 1-15ml/L additive, for increasingStrong coating density, makes magnesium alloy substrate 1 antirust function after electroplating stronger, and more attractive in appearance.
As one embodiment of the present of invention, the be weight percentage 3-sulfydryl of concentration 1-2.5% of additive-1,2,4-triazole.
Passivation step: the magnesium alloy substrate 1 through described zinc-plated step process is placed in to passivating solution, describedSeveral Thiourea Derivatives on Zinc Plate Surface forms one deck passivating film, for form one deck passivating film 3 (trivalents at above-mentioned Zinc DepositChromic acid layer), to increase the decay resistance of coating.
As preferred embodiment of the present invention, in passivating solution, add air stirring, can accelerate passivation speed.
In embodiments of the present invention, passivating solution is that total concentration is chromic nitrate, sodium nitrate and the nitre of 20-300g/LThe mixed aqueous solution of acid cobalt.
In embodiments of the present invention, the time of passivation is controlled at 8-50s.
In embodiments of the present invention, the pre-zinc coat that pre-zinc-plated step forms at magnesium alloy substrate 1 electroplating surfaceMutually merge with the zinc coat forming at pre-Several Thiourea Derivatives on Zinc Plate Surface in zinc-plated step, jointly form as Fig. 1 and 2 instituteShow the zinc layer 2 of magnesium alloy materials, the passivating film 3 forming at Several Thiourea Derivatives on Zinc Plate Surface in passivation step is as Fig. 1 and 2Shown in the passivating film 3 of magnesium alloy materials.
Further illustrate below by embodiment the embodiment of the present invention surface treatment method of Mg alloy process andEffect.
Embodiment 5:
The preparation of pre-galvanizing solution: take the zinc oxide of 30g NaOH, 5g, 30g Guangzhou passes river in Henan Province chemical industryThe HEDP that Co., Ltd produces; The NaOH taking is divided into two parts, and portion mixes, adjusts with zinc oxideBecome pasty state, another part mixes with HEDP; Above-mentioned two kinds of mixtures are mixed, and adopt NaOH to regulatePH is 7.5, adds afterwards 30g potash to mix, and is diluted with water to 1L, makes pre-galvanizing solution.
The preparation of galvanizing solution: take the zinc oxide of 100g NaOH, 15g, both mix, furnishingPasty state; In said mixture, add zinc-plated complexing agent (Atotech (China) Chemical Co., Ltd. of 5mlP3000 series is opened cylinder agent), be diluted with water to 1L, make galvanizing solution.
The pre-galvanizing solution preparing is housed in electroplating bath; Using magnesium alloy substrate 1 as negative electrode, zine plate/Iron plate is as anode, and to both energisings, electrical current is 4A/dm2, after energising 3min, take out, wash.
The galvanizing solution preparing is housed in electroplating bath; To do through the magnesium alloy substrate 1 of preplating processingFor negative electrode, zine plate/iron plate is as anode, and to both energisings, electrical current is 6A/dm2, energising 15minRear taking-up, washing.
To be placed in passivating solution (the chemical limited public affairs of Atotech (China) through zinc-plated magnesium alloy substrate 1 after treatmentThe blue zinc passivating solution of the high-performance HC2 that department produces) in, passivation 50s, constantly stirs during this time, then take out,Wash, dry, obtain surface treated magnesium alloy materials.
To undertaken by said method magnesium alloy substrate after treatment the test of salt fog performance test, resistive performance andAdhesion performance test. Table 1 shows test result.
Embodiment 6:
The preparation of pre-galvanizing solution: take the zinc oxide of 40g NaOH, 7g, 40g Guangzhou passes river in Henan Province chemical industryThe HEDP that Co., Ltd produces; The NaOH taking is divided into two parts, and portion mixes, adjusts with zinc oxideBecome pasty state, another part mixes with HEDP; Above-mentioned two kinds of mixtures are mixed, and adopt NaOH to regulatePH is 7.5, adds afterwards 25g potash to mix, and is diluted with water to 1L, makes pre-galvanizing solution.
The preparation of galvanizing solution: take the zinc oxide of 110g NaOH, 20g, both mix, furnishingPasty state; In said mixture, add zinc-plated complexing agent (the chemical limited public affairs of Atotech (China) of 55.5mlThe P3000 of department series is opened cylinder agent), be diluted with water to 1L, make galvanizing solution.
The pre-galvanizing solution preparing is housed in electroplating bath; Using magnesium alloy substrate as negative electrode, zine plate/Iron plate is as anode, and to both energisings, electrical current is 3.5A/dm2, after energising 5min, take out, wash.
The galvanizing solution preparing is housed in electroplating bath; Using the magnesium alloy substrate through preplating processing asNegative electrode, zine plate/iron plate is as anode, and to both energisings, electrical current is 5A/dm2, after energising 20minTake out, wash.
To be placed in passivating solution (Atotech (China) Chemical Co., Ltd. through zinc-plated magnesium alloy substrate after treatmentThe high-performance bright blue passivation liquid HC2 producing) in, passivation 45s, constantly stirs during this time, then taking-up, waterWash, dry, obtain surface treated magnesium alloy materials.
To undertaken by said method magnesium alloy substrate after treatment the test of salt fog performance test, resistive performance andAdhesion performance test. Table 1 shows test result.
Embodiment 7:
The preparation of pre-galvanizing solution: take the zinc oxide of 50g NaOH, 8g, 50g Guangzhou passes river in Henan Province chemical industryThe HEDP that Co., Ltd produces; The NaOH taking is divided into two parts, and portion mixes, adjusts with zinc oxideBecome pasty state, another part mixes with HEDP; Above-mentioned two kinds of mixtures are mixed, and adopt NaOH to regulatePH is 8, adds afterwards 20g potash to mix, and is diluted with water to 1L, makes pre-galvanizing solution.
The preparation of galvanizing solution: take the zinc oxide of 120g NaOH, 25g, both mix, furnishingPasty state; In said mixture, add zinc-plated complexing agent (Atotech (China) Chemical Co., Ltd. of 5mlP3000 series is opened cylinder agent) and 0.5g thiocarbamide (percentage by weight is 1%), be diluted with water to 1L, makeGalvanizing solution.
The pre-galvanizing solution preparing is housed in electroplating bath; Using magnesium alloy substrate as negative electrode, zine plate/Iron plate is as anode, and to both energisings, electrical current is 3A/dm2, after energising 10min, take out, wash.
The galvanizing solution preparing is housed in electroplating bath; Using the magnesium alloy substrate through preplating processing asNegative electrode, zine plate/iron plate is as anode, and to both energisings, electrical current is 4A/dm2, after energising 25minTake out, wash.
To be placed in passivating solution (Atotech (China) Chemical Co., Ltd. through zinc-plated magnesium alloy substrate after treatmentThe blue zinc passivating solution of the high-performance HC2 producing) in, passivation 40s, constantly stirs during this time, then taking-up, waterWash, dry, obtain surface treated magnesium alloy materials.
To undertaken by said method magnesium alloy substrate after treatment the test of salt fog performance test, resistive performance andAdhesion performance test. Table 1 shows test result.
Embodiment 8:
The preparation of pre-galvanizing solution: take the zinc oxide of 60g NaOH, 9g, 60g Guangzhou passes river in Henan Province chemical industryThe HEDP that Co., Ltd produces; The NaOH taking is divided into two parts, and portion mixes, adjusts with zinc oxideBecome pasty state, another part mixes with HEDP; Above-mentioned two kinds of mixtures are mixed, and adopt NaOH to regulatePH is 8, adds afterwards 15g potash to mix, and is diluted with water to 1L, makes pre-galvanizing solution.
The preparation of galvanizing solution: take the zinc oxide of 130g NaOH, 35g, both mix, furnishingPasty state; In said mixture, add zinc-plated complexing agent (Atotech (China) Chemical Co., Ltd. of 5mlP3000 series is opened cylinder agent), 0.6g thiocarbamide (percentage by weight is 0.8%) and 8g additive 3-sulfydryl-1,2,4-Triazole (percentage by weight is 2%), is diluted with water to 1L, makes galvanizing solution.
The pre-galvanizing solution preparing is housed in electroplating bath; Using magnesium alloy substrate as negative electrode, zine plate/Iron plate is as anode, and to both energisings, electrical current is 2.5A/dm2, after energising 15min, take out, wash.
The galvanizing solution preparing is housed in electroplating bath; Using the magnesium alloy substrate through preplating processing asNegative electrode, zine plate/iron plate is as anode, and to both energisings, electrical current is 3.5A/dm2, after energising 30minTake out, wash.
To be placed in passivating solution (Atotech (China) Chemical Co., Ltd. through zinc-plated magnesium alloy substrate after treatmentThe high-performance bright blue passivation liquid HC2 producing) in, passivation 35s, constantly stirs during this time, then taking-up, waterWash, dry, obtain surface treated magnesium alloy materials.
To undertaken by said method magnesium alloy substrate after treatment the test of salt fog performance test, resistive performance andAdhesion performance test. Table 1 shows test result.
Embodiment 9:
The preparation of pre-galvanizing solution: take the zinc oxide of 70g potassium hydroxide, 10g, 70g Guangzhou passes river in Henan Province chemical industryThe HEDP that Co., Ltd produces; The potassium hydroxide taking is divided into two parts, and portion mixes, adjusts with zinc oxideBecome pasty state, another part mixes with HEDP; Above-mentioned two kinds of mixtures are mixed, and adopt potassium hydroxide to regulatePH is 8.5, adds afterwards 12g potash to mix, and is diluted with water to 1L, makes pre-galvanizing solution.
The preparation of galvanizing solution: take the zinc oxide of 150g potassium hydroxide, 40g, both mix, furnishing is stuck with pasteShape; In said mixture, add zinc-plated complexing agent (Atotech (China) P3000 of Chemical Co., Ltd. of 6mlSeries is opened cylinder agent) and 10g additive 3-sulfydryl-1,2,4-triazole (percentage by weight is 2%), is diluted with waterTo 1L, make galvanizing solution.
The pre-galvanizing solution preparing is housed in electroplating bath; Using magnesium alloy substrate as negative electrode, zine plate/Iron plate is as anode, and to both energisings, electrical current is 2A/dm2, after energising 18min, take out, wash.
The galvanizing solution preparing is housed in electroplating bath; Using the magnesium alloy substrate through preplating processing asNegative electrode, zine plate/iron plate is as anode, and to both energisings, electrical current is 3A/dm2, after energising 35minTake out, wash.
To be placed in passivating solution (Atotech (China) Chemical Co., Ltd. through zinc-plated magnesium alloy substrate after treatmentThe blue zinc passivating solution of the high-performance HC2 producing) in, passivation 30s, constantly stirs during this time, then taking-up, waterWash, dry, obtain surface treated magnesium alloy materials.
To undertaken by said method magnesium alloy substrate after treatment the test of salt fog performance test, resistive performance andAdhesion performance test. Table 1 shows test result.
Embodiment 10:
The preparation of pre-galvanizing solution: take the zinc oxide of 80g potassium hydroxide, 12g, 80g Guangzhou passes river in Henan Province chemical industryThe HEDP that Co., Ltd produces; The potassium hydroxide taking is divided into two parts, and portion mixes, adjusts with zinc oxideBecome pasty state, another part mixes with HEDP; Above-mentioned two kinds of mixtures are mixed, and adopt potassium hydroxide to regulatePH is 8.2, adds afterwards 8g potash to mix, and is diluted with water to 1L, makes pre-galvanizing solution.
The preparation of galvanizing solution: take the zinc oxide of 160g potassium hydroxide, 45g, both mix, furnishingPasty state; In said mixture, add zinc-plated complexing agent (the chemical limited public affairs of Atotech (China) of 4.5mlDepartment's P3000 series is opened cylinder agent), 1g key light agent thiocarbamide (percentage by weight is 0.5%) and 10g additive3-sulfydryl-1,2,4-triazole (percentage by weight is 1.5%), is diluted with water to 1L, makes galvanizing solution.
The pre-galvanizing solution preparing is housed in electroplating bath; Using magnesium alloy substrate as negative electrode, zine plate/Iron plate is as anode, and to both energisings, electrical current is 1.5A/dm2, after energising 20min, take out, wash.
The galvanizing solution preparing is housed in electroplating bath; Using the magnesium alloy substrate through preplating processing asNegative electrode, zine plate/iron plate is as anode, and to both energisings, electrical current is 2.5A/dm2, after energising 45minTake out, wash.
To be placed in passivating solution (Atotech (China) Chemical Co., Ltd. through zinc-plated magnesium alloy substrate after treatmentThe high-performance bright blue passivation liquid HC2 producing) in, passivation 25s, constantly stirs during this time, then taking-up, waterWash, dry, obtain surface treated magnesium alloy materials.
To undertaken by said method magnesium alloy substrate after treatment the test of salt fog performance test, resistive performance andAdhesion performance test. Table 1 shows test result.
Embodiment 11:
The preparation of pre-galvanizing solution: take the zinc oxide of 90g potassium hydroxide, 13g, 90g Guangzhou passes river in Henan Province chemical industryThe HEDP that Co., Ltd produces; The potassium hydroxide taking is divided into two parts, and portion mixes, adjusts with zinc oxideBecome pasty state, another part mixes with HEDP; Above-mentioned two kinds of mixtures are mixed, and adopt potassium hydroxide to regulatePH is 8.2, adds afterwards 3g potash to mix, and is diluted with water to 1L, makes pre-galvanizing solution.
The preparation of galvanizing solution: take the zinc oxide of 180g potassium hydroxide, 50g, both mix, furnishingPasty state; In said mixture, add zinc-plated complexing agent (Atotech (China) Chemical Co., Ltd. of 4mlP3000 series is opened cylinder agent) and 7g additive 3-sulfydryl-1,2,4-triazole (percentage by weight is 2.5%), addsWater is diluted to 1L, makes galvanizing solution.
The pre-galvanizing solution preparing is housed in electroplating bath; Using magnesium alloy substrate as negative electrode, zine plate/Iron plate is as anode, and to both energisings, electrical current is 1A/dm2, after energising 25min, take out, wash.
The galvanizing solution preparing is housed in electroplating bath; Using the magnesium alloy substrate through preplating processing asNegative electrode, zine plate/iron plate is as anode, and to both energisings, electrical current is 2A/dm2, after energising 55minTake out, wash.
To be placed in passivating solution (Atotech (China) Chemical Co., Ltd. through zinc-plated magnesium alloy substrate after treatmentThe high-performance bright blue passivation liquid HC2 producing) in, passivation 15s, constantly stirs during this time, then taking-up, waterWash, dry, obtain surface treated magnesium alloy materials.
To undertaken by said method magnesium alloy substrate after treatment the test of salt fog performance test, resistive performance andAdhesion performance test. Table 1 shows test result.
Embodiment 12:
The preparation of pre-galvanizing solution: take the zinc oxide of 100g potassium hydroxide, 14g, 100g Guangzhou passes river in Henan ProvinceThe HEDP that work Co., Ltd produces; The potassium hydroxide taking is divided into two parts, a mix with zinc oxide,Furnishing pasty state, another part mixes with HEDP; Above-mentioned two kinds of mixtures are mixed, and adopt potassium hydroxide to adjustJoint PH is 7.8, is diluted with water to 1L, makes pre-galvanizing solution.
The preparation of galvanizing solution: take the zinc oxide of 200g potassium hydroxide, 60g, both mix, furnishingPasty state; In said mixture, add zinc-plated complexing agent (Atotech (China) Chemical Co., Ltd. of 6mlP3000 series is opened cylinder agent), 0.8g key light agent thiocarbamide (percentage by weight is 0.1%) and 12g additive 3-Sulfydryl-1,2,4-triazole (percentage by weight is 1%), is diluted with water to 1L, makes galvanizing solution.
The pre-galvanizing solution preparing is housed in electroplating bath; Using magnesium alloy substrate 1 as negative electrode, zine plate/Iron plate is as anode, and to both energisings, electrical current is 0.5A/dm2, after energising 30min, take out, wash.
The galvanizing solution preparing is housed in electroplating bath; To do through the magnesium alloy substrate 1 of preplating processingFor negative electrode, zine plate/iron plate is as anode, and to both energisings, electrical current is 1A/dm2, energising 60minRear taking-up, washing.
To be placed in passivating solution (the chemical limited public affairs of Atotech (China) through zinc-plated magnesium alloy substrate 1 after treatmentThe high-performance bright blue passivation liquid HC2 that department produces) in, passivation 8s, constantly stirs during this time, then taking-up, waterWash, dry, obtain surface treated magnesium alloy materials.
To undertaken by said method magnesium alloy materials after treatment the test of salt fog performance test, resistive performance andAdhesion performance test. Table 1 shows test result.
Table 1:
Salt fog performance, resistive performance and adhesion performance in conjunction with the magnesium alloy materials of each embodiment in upper table canTo find out, the surface treatment method of Mg alloy magnesium alloy materials after treatment that the embodiment of the present invention provides, its saltMist performance at least can reach 96h, the resistance before salt fog performance test all below 0.8m Ω, salt fog performanceResistance after test is all below 1.0m Ω, and after adhesion performance test, magnesium alloy materials surface is outThe phenomenon that existing coating comes off. Obtaining of the surface treatment method of Mg alloy processing that the visible embodiment of the present invention providesMagnesium alloy materials salt fog performance is good, and resistance is little, and binding force of cladding material is strong.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, not all at thisAny amendment of doing within bright spirit and principle, be equal to and replace and improvement etc., all should be included in the present inventionProtection domain within.
Claims (16)
1. a magnesium alloy materials, is characterized in that, described magnesium alloy materials comprises:
Magnesium alloy substrate;
Zinc layer, is attached to described magnesium alloy matrix surface; And
Passivating film, is attached to described zinc layer surface.
2. want the magnesium alloy materials as described in 1 as right, it is characterized in that, the thickness of described zinc layer is 1.4-7.8μ m, density is 0.71～0.78 ㎎ ㎝-2·μm-1。
3. magnesium alloy materials as claimed in claim 1 or 2, is characterized in that, the thickness of described passivating filmFor 0.2-0.6 μ m.
4. a mobile terminal, includes termination support and/or terminal connector, it is characterized in that instituteState termination support and/or terminal connector in whole or in part by magnesium alloy materials as claimed in claim 1Make.
5. mobile terminal as claimed in claim 4, is characterized in that, described mobile terminal be mobile phone,Personal computer or personal digital assistant.
6. a communication apparatus, comprises equipment support members and/or equipment connection part, it is characterized in that, described inEquipment support members and/or equipment connection part are in whole or in part by magnesium alloy materials system as claimed in claim 1Become.
7. communication apparatus as claimed in claim 6, is characterized in that, described communication apparatus is base station, tuneModulator-demodulator or communication transmitter.
8. vehicles, comprise vehicles support member and/or vehicles connector, and its feature existsIn, described vehicles support member and/or vehicles connector are by magnesium alloy material as claimed in claim 1Material is made.
9. the vehicles as claimed in claim 8, is characterized in that, the described vehicles are automobile or railThe road vehicles.
10. a preparation method for magnesium alloy materials as claimed in claim 1, is characterized in that, described inMethod comprises the steps:
Pre-zinc-plated step: magnesium alloy substrate is placed in to pre-galvanizing solution, electroplates at described magnesium alloy matrix surfaceForm the pre-zinc coat of one deck;
Zinc-plated step: the magnesium alloy substrate through described pre-zinc-plated step process is placed in to galvanizing solution, in instituteState pre-zinc coat electroplating surface and form one deck zinc coat;
Passivation step: the magnesium alloy substrate through described zinc-plated step process is placed in to passivating solution, in described platingZinc layer surface forms one deck passivating film.
11. methods as claimed in claim 10, is characterized in that, described pre-galvanizing solution comprises following thingMatter and concentration: NaOH/potassium hydroxide 10-100g/L, zinc oxide 5-14g/L, preplating complexing agent 5-100g/L。
12. methods as claimed in claim 11, is characterized in that, described preplating complexing agent is HEDPThe mixed aqueous solution of the aqueous solution, HEDP and carbonate or the aqueous solution that contains CN-.
13. methods as claimed in claim 10, is characterized in that, in described pre-zinc-plated step, applyBe 1-4A/dm at the electric current of magnesium alloy substrate2, be 3～30min conduction time.
14. methods as claimed in claim 10, is characterized in that, described galvanizing solution comprises following materialAnd concentration: the key light agent of NaOH/potassium hydroxide 100-200g/L, zinc oxide 7-60g/L, 0-15ml/L,0-15ml/L additive.
15. methods as claimed in claim 10, is characterized in that, in described zinc-plated step, are applied toThe electric current of magnesium alloy substrate is 0.5-6A/dm2, be 5～60 minutes conduction time.
16. methods as claimed in claim 14, is characterized in that: described galvanizing solution also comprises 1-6ml/LZinc-plated complexing agent, described zinc-plated complexing agent is formed by nitride and epoxychloropropane condensation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10638628B2 (en) | 2017-08-30 | 2020-04-28 | Samsung Electronics Co., Ltd. | Network communication device enclosure made of different materials |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02254179A (en) * | 1989-03-27 | 1990-10-12 | Mitsubishi Electric Corp | Formation of plating film on magnesium alloy |
| US6068938A (en) * | 1997-04-15 | 2000-05-30 | Kabushiki Kaisha Kobe Seiko Sho | Magnesium based alloys article and a method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02254179A (en) * | 1989-03-27 | 1990-10-12 | Mitsubishi Electric Corp | Formation of plating film on magnesium alloy |
| US6068938A (en) * | 1997-04-15 | 2000-05-30 | Kabushiki Kaisha Kobe Seiko Sho | Magnesium based alloys article and a method thereof |
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| 卫英慧，许并社: "《镁合金腐蚀防护的理论与实践》", 30 April 2007 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10638628B2 (en) | 2017-08-30 | 2020-04-28 | Samsung Electronics Co., Ltd. | Network communication device enclosure made of different materials |
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