CN104959731A - Laser method for preparing nanometer porous structure on surface of aluminum alloy - Google Patents
Laser method for preparing nanometer porous structure on surface of aluminum alloy Download PDFInfo
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- CN104959731A CN104959731A CN201510345338.5A CN201510345338A CN104959731A CN 104959731 A CN104959731 A CN 104959731A CN 201510345338 A CN201510345338 A CN 201510345338A CN 104959731 A CN104959731 A CN 104959731A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/355—Texturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
Abstract
The invention discloses a laser method for preparing a nanometer porous structure on the surface of aluminum alloy. The method includes the first step of sequentially conducting chemical cleaning oil removal, grinding wheel grinding oxide layer removal and after-grinding cleaning on the surface of an aluminum alloy plate, the second step of placing the aluminum alloy plate on a working table of a laser direct writing machining system, setting laser parameters, starting the laser direct writing machining system, scanning the aluminum alloy plate with lasers at a certain speed through galvanometer scanning, and finally obtaining a nanometer porous array loose structure on the surface, and the third step of wiping and cleaning the machined aluminum alloy plate with anhydrous alcohol. Compared with an existing nanometer porous array machining method, the method has the advantages that the machining efficiency and accuracy are greatly improved, the machining area and size range can be flexibly adjusted according to design requirements, and the method has great significance on preparation and development of the nanometer porous structure on the surface of the metal material.
Description
Technical field
The present invention relates to a kind of laser means preparing aluminum alloy surface nano-porous structure, it is a kind of method utilizing laser writing technology to prepare nanohole array on aluminium alloy sheet.The field such as electrochemical catalysis, separation science, optical sensing, nano wire assembling that the method can be applied to this nanometer open structure be substrate.
Background technology
Metal nano pore structure has unique electric property, optical property and structural behaviour, is mainly used in electrochemical catalysis and separation science.The technology preparing metal nano pore structure is at present mainly de-alloyage, sintering process and template.The foam-like nano-pore structure being irregular duct that the above two produce; Template is by prefabricated colloidal crystal or anodised aluminium nano-pillar permutation, and the process that template is removed after plated metal template again makes metal nano pore structure.The gained nanoporous size that is limited in of template is limited to template used size completely, needs to use a series of chemical method to control nano-pillar size in template; And template cannot obtain long nanotube, therefore the nano-pore degree of depth of template gained also has considerable restraint.
Laser writing technology is a kind of emerging optics non-contact type Micrometer-Nanometer Processing Technology, utilizes focus energy and the variable laser beam of focal position to carry out radiation to matrix material, forms the technology of two dimensional surface or 3-D solid structure in its surface.The basic functional principle of laser direct-writing system of processing is that the profit high-precision focused beam that computerizeds control carries out accurate scan, the figure designed by directly being write by radiation on substrate material surface.Laser direct-writing system of processing primarily of mechanical system, optical system and electric-control system three part composition.Mechanical system has marble pedestal, initiatively antishock device, linear electric motors and article carrying platform thereof; Optical system mainly comprises interferometer, focusing objective len, acousto-optic modulator, monitoring CCD camera, generating laser and autofocus system thereof; Electric-control system mainly includes the electronic module controlled linear electric motors, acousto-optic modulator, interferometer, autofocus system.Three systems to be connected with computer by corresponding interface and to utilize software to carry out controlling and coordinating, and complete radiation and scanning process.
At present, outside removing template method, there is no the processing method that other can produce cylindric nanohole array open structure, developing more efficient nano-pore processing method will promote the research work in related application field greatly.Use laser writing technology as the processing method of metal-surface nano open structure, can significantly improve machining accuracy and working (machining) efficiency, be electrochemistry, and the correlative study of optics etc. provides higher-quality product.
Summary of the invention
The present invention relates to a kind of method manufacturing metal-surface nano hole open structure.The electrochemical catalysis that the method can be applied to this nanometer open structure be substrate, separation science, optical sensing, the fields such as nano wire assembling.
Flow process of the present invention as shown in Figure 1.
Prepare a laser means for aluminum alloy surface nano-porous structure, the method concrete steps are as follows:
Step one: Chemical cleaning is carried out successively to aluminium alloy plate surface and deoils, grinder buffing oxide layer, cleaning after polishing;
Step 2: aluminium alloy plate is placed on the workbench of laser direct-writing system of processing, setting laser parameter, start laser direct-writing system of processing, utilize vibration mirror scanning that laser is strafed with certain speed on aluminium alloy plate, finally obtain nanohole array open structure on surface;
Step 3: the aluminium alloy plate after processing is cleared up with absolute alcohol wiping.
Wherein, the time of the cleaning described in step one is 10-30s.
Wherein, the setting laser parameter described in step 2 is: optical maser wavelength is 193nm-1070nm, and laser pulse width is 50fs-900ps, and laser power is 0.16W-1.27W, and laser pulse frequency is 10kHz-1MHz; Utilize vibration mirror scanning that laser is strafed with certain speed on aluminium alloy plate, its speed is for being 0.2mm/s-3m/s.
Aluminum alloy surface nanometer open structure processing method disclosed by the invention, opens a kind of processing of new metal-surface nano hole array, compared to existing template nanohole array processing technology, the invention has the advantages that:
(1): the method eliminates toxic chemical consumption when making template in electrochemical process, the target of environmental protection processing is realized.
(2): the method utilizes laser direct-writing system of processing, accurately can control aperture, hole density, hole depth etc. as frequency, sweep speed, power by changing laser parameter, machining accuracy and the range of work nano-pore much larger than existing technique can be obtained.
(3): the method can realize any setting of machining area, more flexible compared to template processing.
(4): the method process velocity is faster, is expected to enhance productivity in actual production.
(5): the method processing can obtain the nano-pore of the larger degree of depth.
Accompanying drawing illustrates:
Fig. 1 method flow diagram.
Fig. 2 laser direct-writing system of processing schematic diagram.
Aluminum alloy surface longitudinal section after Fig. 3 Laser Processing.
Aluminum alloy surface longitudinal section microstructure after Fig. 4 Laser Processing.
Aluminum alloy surface longitudinal section microstructure after Fig. 5 Laser Processing.
Aluminum alloy surface displaing micro picture after Fig. 6 Laser Processing.
Detailed description of the invention:
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in figs 1 to 6, the laser processing of aluminum alloy surface nano-porous structure disclosed by the invention comprises the following steps:
Step one: Chemical cleaning is carried out successively to aluminium alloy plate surface and deoils, grinder buffing oxide layer, cleaning after polishing;
Step 2: aluminium alloy plate is placed on the workbench of laser direct-writing system of processing, setting laser parameter, start laser direct-writing system of processing, utilize vibration mirror scanning that laser is strafed with certain speed on aluminium alloy plate, finally obtain nanohole array open structure on surface;
Step 3: the aluminium alloy plate after processing is cleared up with absolute alcohol wiping.
Wherein, the time of the cleaning described in step one is 10-30s;
Wherein, the setting laser parameter described in step 2 is: optical maser wavelength is 193nm-1070nm, and laser pulse width is 50fs-900ps, and laser power is 0.16W-1.27W, and laser pulse frequency is 10kHz-1MHz; Utilize vibration mirror scanning that laser is strafed with certain speed on aluminium alloy plate, its speed is for being 0.2mm/s-3m/s.
Aluminum alloy surface nanometer open structure processing method disclosed by the invention, opens a kind of processing of new metal-surface nano hole array, compared to existing template nanohole array processing technology, the invention has the advantages that:
The method eliminates toxic chemical consumption when making template in electrochemical process, realizes the target of environmental protection processing; The method utilizes laser direct writing system, accurately can control, can obtain the nano-pore of the degree of depth much larger than existing technique by changing laser parameter as frequency, sweep speed, power to aperture, hole density, hole depth etc.; The method can realize any setting of machining area, more flexible compared to template processing; The method process velocity is faster, is expected to enhance productivity in actual production.
Embodiment 1:
(1): the 5A06 aluminium alloy plate getting 4mm thickness, is placed in absolute alcohol and cleans, with sand papering, then clear up with absolute alcohol wiping.
(2): PX series laser sample being placed in Edgewave company is directly write on the workbench of system of processing (using the green glow configuration of 532nm wavelength), arranging laser power is 0.16W, frequency is 100KHz, sweep speed is 1m/s, arranging Scanning size is 5mm × 5mm, starts laser direct-writing system of processing and starts processing.
(3): take off aluminium sheet after processing from workbench, clear up with absolute alcohol wiping.
Embodiment 2:
(1): the 5A06 aluminium alloy plate getting 4mm thickness, is placed in absolute alcohol and cleans, with sand papering, then clear up with absolute alcohol wiping.
(2): PX series laser sample being placed in Edgewave company is directly write on the workbench of system of processing (using the green glow configuration of 532nm wavelength), arranging laser power is 0.5W, frequency is 500KHz, sweep speed is 1.5m/s, arranging Scanning size is 5mm × 5mm, starts laser direct-writing system of processing and starts processing.
(3): take off aluminium sheet after processing from workbench, clear up with absolute alcohol wiping.
Embodiment 3:
(1): the 5A06 aluminium alloy plate getting 4mm thickness, is placed in absolute alcohol and cleans, with sand papering, then clear up with absolute alcohol wiping.
(2): PX series laser sample being placed in Edgewave company is directly write on the workbench of system of processing (using the green glow configuration of 532nm wavelength), arranging laser power is 1W, frequency is 1MHz, sweep speed is 1m/s, arranging Scanning size is 5mm × 5mm, starts laser direct-writing system of processing and starts processing.
(3): take off aluminium sheet after processing from workbench, clear up with absolute alcohol wiping.
Embodiment 4:
(1): the 5A06 aluminium alloy plate getting 4mm thickness, is placed in absolute alcohol and cleans, with sand papering, then clear up with absolute alcohol wiping.
(2): PX series laser sample being placed in Edgewave company is directly write on the workbench of system of processing (using the green glow configuration of 532nm wavelength), arranging laser power is 1.27W, frequency is 1MHz, sweep speed is 3m/s, arranging Scanning size is 5mm × 5mm, starts laser direct-writing system of processing and starts processing.
(3): take off aluminium sheet after processing from workbench, clear up with absolute alcohol wiping.
As implied above, the laser processing of a kind of aluminum alloy surface nanoporous open structure disclosed by the invention, by the aluminium alloy plate through sand papering and alcohol washes, adopt laser direct-writing system of processing in its Surface Machining, obtain the nanohole array open structure of aluminum alloy surface, nano-pore arrangement is neat in order, and working (machining) efficiency is high.Compare existing nanohole array processing method, the breakthrough that the present invention obtains is to substantially increase working (machining) efficiency and precision, the nano-pore degree of depth of preparation is larger, machining area and size range can need adjustment flexibly according to design, to the preparation of Nano surface of metal material loose structure with develop significant.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned technological means, also comprises the technical scheme be made up of above technical characteristic.The scope that the scope of protection of present invention defines with claims is as the criterion.
Claims (3)
1. prepare a laser means for aluminum alloy surface nano-porous structure, it is characterized in that: the method concrete steps are as follows:
Step one: Chemical cleaning is carried out successively to aluminium alloy plate surface and deoils, grinder buffing oxide layer, cleaning after polishing;
Step 2: aluminium alloy plate is placed on the workbench of laser direct-writing system of processing, setting laser parameter, start laser direct-writing system of processing, utilize vibration mirror scanning that laser is strafed with certain speed on aluminium alloy plate, finally obtain nanohole array open structure on surface;
Step 3: the aluminium alloy plate after processing is cleared up with absolute alcohol wiping.
2. a kind of laser means preparing aluminum alloy surface nano-porous structure according to claim 1, is characterized in that: the time of the cleaning described in step one is 10-30s.
3. a kind of laser means preparing aluminum alloy surface nano-porous structure according to claim 1, it is characterized in that: the setting laser parameter described in step 2 is: optical maser wavelength is 193nm-1070nm, laser pulse width is 50fs-900ps, laser power is 0.16W-1.27W, and laser pulse frequency is 10kHz-1MHz; Utilize vibration mirror scanning that laser is strafed with certain speed on aluminium alloy plate, its speed is for being 0.2mm/s-3m/s.
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Cited By (5)
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| CN105149785A (en) * | 2015-10-28 | 2015-12-16 | 无锡汉神电气有限公司 | Lap joint laser welding technology for 0.5 mm aluminum alloy plate |
| CN106148644A (en) * | 2016-08-24 | 2016-11-23 | 北京航空航天大学 | A kind of metallic hardfacing method of short-pulse laser |
| CN108555437A (en) * | 2018-05-09 | 2018-09-21 | 北京航空航天大学 | A kind of laser processing of orientation regulation and control biomedical metal material superficial cell growth |
| CN108819092A (en) * | 2018-06-25 | 2018-11-16 | 无锡市恒利弘实业有限公司 | A kind of preparation method of the aluminum or aluminum alloy material of high density holes |
| CN113458611A (en) * | 2021-06-22 | 2021-10-01 | 武汉华工激光工程有限责任公司 | Laser marking method and device for aluminum alloy high-brightness light processing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105149785A (en) * | 2015-10-28 | 2015-12-16 | 无锡汉神电气有限公司 | Lap joint laser welding technology for 0.5 mm aluminum alloy plate |
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| CN108555437A (en) * | 2018-05-09 | 2018-09-21 | 北京航空航天大学 | A kind of laser processing of orientation regulation and control biomedical metal material superficial cell growth |
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| CN113458611A (en) * | 2021-06-22 | 2021-10-01 | 武汉华工激光工程有限责任公司 | Laser marking method and device for aluminum alloy high-brightness light processing |
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| CN104959731B (en) | 2016-11-23 |
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