CN102329994B - Long-acting data storage alloy material and preparation method thereof - Google Patents
Long-acting data storage alloy material and preparation method thereof Download PDFInfo
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- CN102329994B CN102329994B CN2011103263221A CN201110326322A CN102329994B CN 102329994 B CN102329994 B CN 102329994B CN 2011103263221 A CN2011103263221 A CN 2011103263221A CN 201110326322 A CN201110326322 A CN 201110326322A CN 102329994 B CN102329994 B CN 102329994B
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Abstract
The invention relates to a long-acting data storage alloy material and a preparation method thereof, and aims to provide an alloy material with high reflectivity and used for prolonging the service life of a data storage disk. The alloy material consists of the following metals in percentage by weight: 87 to 93 percent of aluminum, 3 to 7 percent of titanium, and 4 to 6 percent of silver. The preparation method comprises the following steps of: fully mixing powder of the aluminum, the titanium and the silver, filling the mixed powder into a die, compressing, sintering in a vacuum sintering furnace, forging, calendering and machining, and thus obtaining a required target shape. The alloy material is mainly used for making a reflecting layer of the data storage disk.
Description
Technical field
The present invention relates to a kind of alloy material, more particularly, it relates to a kind of long-acting data memory alloy material, the invention still further relates to the preparation method of above-mentioned alloy material.
Technical background
At present, preferred medium as irreversible data storage medium, the data storage life that can not optical data storage disk be it at the maximum bottleneck of area information storage, that is to say, can are the data that CD that has recorded critical data is stored effectively and reliably read in how long?
Since initial stage seventies CD storage technique is succeeded in developing as the substitute of magnetic tape machine, between short 20 years, the disc take CD and DVD as standard has substituted the novel vector that cassette tape and video tape become music and film.The advantage that CD storage technique once bragged about oneself when stepping into commercial the use eighties again and again, the numerical digit technology becomes the reason that CD storage technique becomes much more popular rapidly with long-acting shelf time." CD of CD media and DVD can be used as collectibles once and for all in the ordinary consumer memory.But through the check of 20 Yu years, the collectibles of putting things right once and for all become visionary hope ", thomas Fu Laier says.
Japan is when holding Osaka world exposition in 1970, two " times capsulae vacuus " had once been buried in the corner in park, city, Osaka, wherein placed 2,000 various articles that gathered at that time, plant seed and cloth material have not only been arranged, even put into televisor and the iron pan of Panasonic's board.One of responsible official then fermentation research He Jingchun when accepting an interview, say: " we this ' time capsulae vacuus ' plan is exactly to wish to look at these article in 100 years bury what variation have occured; may I am dead when answer to a riddle is made known, but the descendant can see that but what is to remain on earth ".The organizer watched the situation of once burying product every 10 years, and put into when emerging article of epoch again and advance " time capsulae vacuus ", and a music CD is placed into wherein in 1980.After 20 years, find when the digger takes out CD and checks, CD dying.
The Fu Ersi that once participated in the early stage CD storage technique design seventies says when accepting an interview not long ago: " we planned the limit of age that it can have 150 years when designing CD originally, who expects seeing at present also with regard to 30 years ".One of them major cause that optical data storage disk lost efficacy is exactly to lose efficacy in the reflecting layer of CD.
The major function in the reflecting layer of CD provides enough reflectivity, makes to be stored in the optical disc surface data message to reflect back clear distinguishable light and shade light under the irradiation of laser, allows the read head of laser can demodulate exactly the originally data of record.The reflectivity in inefficacy reflecting layer can cause reflection ray light and shade resolution not caused read error by the laser read head demodulation then well below standard like this, and data can not be read smoothly.
Conventional CD reflection layer material is respectively aluminium and aluminium alloy, silver and silver alloys, silicon, with golden aluminium and aluminum-copper alloy: aluminium has the advantages such as reflectivity is high, film forming speed is fast, erosion resistance is good, its erosion resistance improves along with the increase of purity, meanwhile, because the good processability of fine aluminium, the preparation technology of fine aluminium target is simple, and a series of advantage that cost is low etc. makes the aluminium reflecting layer become the technique of the main flow of conventional CD.But along with the practice of usage of CD-ROM shows, for the long lifetime optical data storage disk, the fine aluminium from 99.9%, the fine aluminium to 99.99%, and even aluminum-copper alloy afterwards, its resistance to corrosion also do not reach requirement far away when improving constantly.In addition, aluminium and aluminum-copper alloy high thermal conductance also so that the film speed of the recording layer on the recording disk be very restricted.
Silver and silver alloys, and aluminium is similar, a series of benefit such as silver and silver alloys also have reflectivity high, and process window is large, but same, preserve for a long time the silver-colored problem that exists equally reflectivity to descend gradually; Different with the aluminium reflecting layer, its degradation mechanism and aluminium are essentially different: consist of the silver atoms of film in order to reach state more steady on the energy, and move in the direction of three-dimensional, and assemble in the weakest place of Ag-Ag atomic bond in the mode of subglobular.Thereby cause the diffuse-reflectance of incident beam, and the reflectivity of laser read head direction is descended, until correct recognition data.
Silicon alloy, the silicon reflective film also is a kind of common materials that is applied in the CD reflection layer, the problem of silicon maximum is that the mechanical property of material is relatively poor, its film forming speed is slower, process window is narrow, and easy embrittlement of target etc. the most important thing is in the production process, the embrittlement phenomenon can occur in silicon film under larger humiture is impacted, be not desirable long lifetime optical data storage disk reflector material equally.
The most classical ideal material that gold and karat gold are used for long lifetime optical data storage disk reflecting layer is gold, but golden except cost costliness own, the security control cost of the gold target material of bulk also allows the people have a headache very much.
Summary of the invention
For the problems referred to above, the technical problem to be solved in the present invention provides the long-acting data memory alloy material that a kind of reflectivity is high, prolong the optical data storage disk life-span.
Another technical problem that the present invention will solve provides a kind of preparation method of above-mentioned alloy material.
Last technical scheme of the present invention is such: a kind of long-acting data memory alloy material is made of the metal-powder of following weight per-cent: aluminium 87%～93%, titanium 3%～7%, silver 4%～6%.Above-mentioned a kind of aluminum alloy materials, the particle diameter of described metal-powder are 0.5～2 micron.
In the above-mentioned a kind of long-acting data memory alloy material, described metal-powder purity is greater than 99.99%; Chemistry is clean greater than 99.99%.
A technical scheme is such after of the present invention: a kind of preparation method of aluminum alloy materials, aluminium, titanium, silver powder fully mixed be filled in mould and carry out compressed moulding, behind sintering in the vacuum sintering furnace, forge calendering, carry out at last mechanical workout and obtain needed target shape.
The preparation method of above-mentioned a kind of long-acting data memory alloy material, 1600 ℃～1800 ℃ of the sintering temperatures of described metal-powder, the sintering time of described metal-powder 3～6 hours.
Long-acting data memory alloy material of the present invention is used for making the reflecting layer of optical data storage disk.
Compared with prior art, the present invention has following beneficial effect:
1. at the bottom of the alloy material cost provided by the invention, good stability, easily realize.
2. alloy material provided by the invention improves the recording layer photosensitive property in the reflecting layer of optical data storage disk, promotes imprinting and the data stabilization performance of disc plate.
3. the reflecting layer of alloy material formation provided by the invention can both keep high reflectance between a very long staging life, and the life-span is conventional aluminium and more than 1.2 times of aluminium alloy reflecting layer life-span thereof on the market.
Embodiment
Below in conjunction with specific embodiment the present invention is done further to be elaborated, but become any limitation of the invention not.
Embodiment 1
A kind of long-acting data memory alloy material, greater than 99.99%, particle diameter is 0.6 micron aluminium by 87 kilograms of purity, and 7 kilograms of purity are greater than 99.99%, and particle diameter is 0.5 micron titanium, and 6 kilograms of purity are greater than 99.99%, and particle diameter is 2 microns silver; The preparation method of this alloy material is: the mould that aluminium, titanium, silver powder is fully mixed the carbon system of being filled in carries out compressed moulding, forging calendering after 4 hours with 1700 ℃ of sintering in the vacuum sintering furnace, to improve its density, carry out at last mechanical workout and obtain needed target shape, the technology mode by welding during use is combined on the backboard of copper or molybdenum.
Embodiment 2
A kind of long-acting data memory alloy material, greater than 99.99%, particle diameter is 0.9 micron aluminium by 90 kilograms of purity, and 6 kilograms of purity are greater than 99.99%, and particle diameter is 0.9 micron titanium, and 6 kilograms of purity are greater than 99.99%, and particle diameter is 0.9 micron silver; The preparation method of this alloy material is: the mould that aluminium, titanium, silver powder is fully mixed the carbon system of being filled in carries out compressed moulding, forging calendering after 3 hours with 1800 ℃ of sintering in the vacuum sintering furnace, to improve its density, carry out at last mechanical workout and obtain needed target shape, the technology mode by welding during use is combined on the backboard of copper or molybdenum.
Embodiment 3
A kind of long-acting data memory alloy material, greater than 99.99%, particle diameter is 0.6 micron aluminium by 93 kilograms of purity, and 4 kilograms of purity are greater than 99.99%, and particle diameter is 0.5 micron titanium, and 6 kilograms of purity are greater than 99.99%, and particle diameter is 2 microns silver; The preparation method of this alloy material is: the mould that aluminium, titanium, silver powder is fully mixed the carbon system of being filled in carries out compressed moulding, forging calendering after 5 hours with 1650 ℃ of sintering in the vacuum sintering furnace, to improve its density, carry out at last mechanical workout and obtain needed target shape, the technology mode by welding during use is combined on the backboard of copper or molybdenum.
Embodiment 4
A kind of long-acting data memory alloy material, greater than 99.99%, particle diameter is 0.1 micron aluminium by 89 kilograms of purity, and 5 kilograms of purity are greater than 99.99%, and particle diameter is 0.5 micron titanium, and 6 kilograms of purity are greater than 99.99%, and particle diameter is 2 microns silver; The preparation method of this alloy material is: the mould that aluminium, titanium, silver powder is fully mixed the carbon system of being filled in carries out compressed moulding, forging calendering after 4.5 hours with 1750 ℃ of sintering in the vacuum sintering furnace, to improve its density, carry out at last mechanical workout and obtain needed target shape, the technology mode by welding during use is combined on the backboard of copper or molybdenum.
Embodiment 5
A kind of long-acting data memory alloy material, greater than 99.99%, particle diameter is 0.15 micron aluminium by 89 kilograms of purity, and 5 kilograms of purity are greater than 99.99%, and particle diameter is 1 micron titanium, and 6 kilograms of purity are greater than 99.99%, and particle diameter is 1 micron silver; The preparation method of this alloy material is: the mould that aluminium, titanium, silver powder is fully mixed the carbon system of being filled in carries out compressed moulding, forging calendering after 4.5 hours with 1750 ℃ of sintering in the vacuum sintering furnace, to improve its density, carry out at last mechanical workout and obtain needed target shape, the technology mode by welding during use is combined on the backboard of copper or molybdenum.
Embodiment 6
A kind of long-acting data memory alloy material, greater than 99.99%, particle diameter is 0.2 micron aluminium by 92 kilograms of purity, and 3 kilograms of purity are greater than 99.99%, and particle diameter is 1 micron titanium, and 5 kilograms of purity are greater than 99.99%, and particle diameter is 1 micron silver; The preparation method of this alloy material is: the mould that aluminium, titanium, silver powder is fully mixed the carbon system of being filled in carries out compressed moulding, forging calendering after 4.5 hours with 1750 ℃ of sintering in the vacuum sintering furnace, to improve its density, carry out at last mechanical workout and obtain needed target shape, technology mode by welding during use is combined on the backboard of copper or molybdenum, and follow-up work prepares according to a conventional method during production.
Determination test
According to the given condition determination of international standard ISO/CD15525, testing method and standard: video disc is put in-18 ℃ the refrigerator 8 hours, puts into 65 ℃ hot water after 16 hours again, and video disc is lost without weakening without appearance deformation, signal.
The CD life-span of the making of material therefor of the present invention has been estimated in survey, has also calculated the life-span of the CD that aluminium commonly used, aluminum alloy materials are made on the market simultaneously, and has measured its stability and wear resistance.
| Test article | Life-span | Stability | Wear resistance |
| CD 1 | 70 | Well | Well |
| CD 2 | 65 | Well | Well |
| CD 3 | 50 | Well | Well |
| CD 4 | 55 | Well | Well |
| CD 5 | 60 | Well | Well |
| CD 6 | 45 | Well | Well |
| Contrast product 1 | 25 | Well | Generally |
| Contrast product 2 | 40 | Well | Well |
The CD 1 to 6 of this experiment is to adopt among the embodiment 1 to 6 prepared material, the CD in respective production reflecting layer, contrast product 1 are the CDs in the reflecting layer that conventional aluminium makes on the market, and contrast product 2 are the CDs in the reflecting layer of aluminium alloy making, and all tests are all carried out under identical conditions.
Prepared CD detected result
Table 2
Claims (5)
1. a long-acting data memory alloy material is characterized in that, is made of the metal-powder of following weight per-cent: aluminium 87%, titanium 7%, silver 6%; The preparation method fully mixes aluminium, titanium, silver powder to be filled in mould and to carry out compressed moulding, forges calendering behind sintering in the vacuum sintering furnace, carries out at last mechanical workout and obtains needed target shape; 1600 ℃～1800 ℃ of the sintering temperatures of metal-powder, sintering time 3～6 hours.
2. long-acting data memory alloy material according to claim 1 is characterized in that, the particle diameter of described metal-powder is 0.5～2 micron.
3. long-acting data memory alloy material according to claim 2 is characterized in that, described metal-powder purity is greater than 99.99%.
4. the preparation method of the described a kind of long-acting data memory alloy material of claim 1, it is characterized in that, aluminium, titanium, silver powder fully mixed being filled in mould and carrying out compressed moulding, behind sintering in the vacuum sintering furnace, forge calendering, carry out at last mechanical workout and obtain needed target shape; 1600 ℃～1800 ℃ of the sintering temperatures of metal-powder, sintering time 3～6 hours.
5. long-acting data memory alloy material claimed in claim 1 is used for making the reflecting layer of optical data storage disk.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3140148B2 (en) * | 1992-03-13 | 2001-03-05 | パイオニアビデオ株式会社 | Optical recording medium and method for manufacturing the same |
| CN101684544A (en) * | 2008-09-22 | 2010-03-31 | Tdk株式会社 | Sputtering target for optical media, method of manufacturing same, optical medium, and method of manufacturing same |
| CN102150211A (en) * | 2008-09-11 | 2011-08-10 | 株式会社神户制钢所 | Read-only optical information recording medium, and sputtering target for forming reflecting film for the optical information recording medium |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3140148B2 (en) * | 1992-03-13 | 2001-03-05 | パイオニアビデオ株式会社 | Optical recording medium and method for manufacturing the same |
| CN102150211A (en) * | 2008-09-11 | 2011-08-10 | 株式会社神户制钢所 | Read-only optical information recording medium, and sputtering target for forming reflecting film for the optical information recording medium |
| CN101684544A (en) * | 2008-09-22 | 2010-03-31 | Tdk株式会社 | Sputtering target for optical media, method of manufacturing same, optical medium, and method of manufacturing same |
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| Title |
|---|
| JP特许第3140148号B2 2001.03.05 |
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Address after: Guangzhou 514779 Guangdong city of Meizhou Province Yu Jiang Zhen (Meizhou) industrial transfer industrial park B District 2. Patentee after: GUANGDONG AMETHYST INFORMATION STORAGE TECHNOLOGY CO.,LTD. Address before: Guangzhou 514779 Guangdong city of Meizhou Province Yu Jiang Zhen (Meizhou) industrial transfer industrial park B District 2. Patentee before: AMETHYSTUM OPTOELECTRONICS Co.,Ltd. |
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Effective date of registration: 20230727 Address after: Room 401, 4/F, Building 10, No. 233, Jinou Road, Jianghai District, Jiangmen, Guangdong Province, 529000 (information declaration system, multiple photos at one address) Patentee after: Jiangmen Jingjia Information Technology Co.,Ltd. Address before: 514779 Building 2, Zone B, Guangzhou (Meizhou) Industrial Transfer Park, Yujiang Town, Meizhou City, Guangdong Province Patentee before: GUANGDONG AMETHYST INFORMATION STORAGE TECHNOLOGY CO.,LTD. |