CN202305855U - Light reflector blank - Google Patents
Light reflector blank Download PDFInfo
- Publication number
- CN202305855U CN202305855U CN2011204173209U CN201120417320U CN202305855U CN 202305855 U CN202305855 U CN 202305855U CN 2011204173209 U CN2011204173209 U CN 2011204173209U CN 201120417320 U CN201120417320 U CN 201120417320U CN 202305855 U CN202305855 U CN 202305855U
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- titanium alloy
- substrate
- optical glass
- mirror
- glass
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Abstract
The invention discloses a light reflector blank, which comprises a substrate, a titanium alloy transition layer and optical glass, wherein the substrate is made of the material of gamma-TiAl intermetallic compound; the titanium alloy transition layer is closely combined with the substrate; and the optical glass is sealed on the titanium alloy transition layer. The light reflector blank has the advantages of light weight, high strength and good thermal shock resistance performance and can meet the requirements of actual application.
Description
Technical field
The present invention relates to a kind of mirror base of optical device.
Background technology
At present the large tracts of land catoptron mainly contains: 1. titanium catoptron; Its manufacturing process is to utilize some optical glass and the approaching characteristic of titanium alloy expansion coefficient; Titanium alloy microscope base and glass are in the same place through the high temperature sealing by fusing, are processed into the large tracts of land light reflection mirror through machinery, thermal treatment, optics etc. then.The key issue of its sealing by fusing technology is to control the heat stabilisation process of melting temperature sealing and material well.China Building Material Scientific Research General Institute has prepared special glass, realizing the coupling with the performances such as thermal expansivity of titanium matrix, and has applied for patent of invention (number of patent application 200610114376.0) in 2006.2. silicon carbide mirror, reaction sintering is adopted in its preparation usually, chemical vapour deposition technique, pressure sinterings etc. obtain the mirror base, but its manufacturing process is complicated, is difficult to satisfy the preparation requirement of large tracts of land catoptron.3. aluminium alloy light reflection mirror, aluminum alloy material is soft, and linear expansion coefficient is bigger, and part is bigger with the variation of temperature deflection, makes the optical system poor stability.
Titanium alloy is as a kind of novel light basal body of reflector material; Be used widely at present; But titanium alloy density is bigger, and overall weight decline space is little, and the rigidity of titanium alloy and intensity are less relatively; Thereby stress deformation makes the stability of catoptron reduce, and the matrix of making catoptron with titanium alloy is difficult to satisfy the loss of weight and the stability requirement of large caliber reflecting mirror.
Summary of the invention
In order to overcome the deficiency of prior art, the present invention provides a kind of light reflection mirror mirror base, and in light weight, intensity is big, has good thermal shock resistance, can satisfy requirement of actual application.
The technical solution adopted for the present invention to solve the technical problems is: a kind of light reflection mirror mirror base; Comprise substrate, titanium alloy transition bed and optical glass; Base material is γ-TiAl intermetallic compound, and titanium alloy transition bed and substrate are combined closely, sealing-in optical glass on the titanium alloy transition bed.
Described substrate is cellular structure dull and stereotyped or that have light-weight design, replaces the picture frame of conventional mirror, for glass provides support function.
Described optical glass is optical property K9 glass preferably, and its thermal expansivity is 7 * 10
-6K
-1
Described titanium alloy transition bed is the Ti-6Al-4V alloy (being TC4) that is complementary with the optical glass thermal expansivity.
The thickness of described titanium alloy transition bed is 300 μ m.
The preparation method of light reflection mirror mirror base according to the invention may further comprise the steps:
(1) with sand paper the gamma-TiAl alloy substrate surface is polished, selecting thickness is that the TC4 foil of 300 μ m is as intermediate layer.The TC4 foil is placed in the gamma-TiAl alloy substrate, and integral body is inserted in the vacuum heating-press sintering stove, spreads connection, and hot pressing parameters is 900 ℃ of temperature, applies constant pressure 20MPa, and insulation 1.5h cools to room temperature then with the furnace, obtains the TiAl/TC4 web member.
(2) the TiAl/TC4 web member for preparing is put into chamber type electric resistance furnace, be heated to 550 ℃, insulation 1h obtains uniform TC4 surface oxide layer.
(3) K9 glass is placed on the TiAl/TC4 web member after the oxidation, places the TC4 surface oxidation laminated, integral body is inserted in the chamber type electric resistance furnace and is heated; And applying constant pressure 0.15MPa, hot pressing parameters is 680 ℃ of temperature, insulation 1.5h; With the stove cool to room temperature, finally obtain the mirror base then.
The invention has the beneficial effects as follows:, realized that free from flaw and pore exist in the glass owing to adopt suitable connection technology the excellent combination between substrate, titanium alloy transition bed and the optical glass three.Prepared mirror base is heated rapidly to 400 degree and insulation 30min from room temperature; Take out then that at room temperature air cooling is to room temperature, so repeatedly, the result shows; After 20 thermal shocks experiment; Glass surface never has crackle and produces, and shows that this mirror base has good thermal shock resistance, can satisfy requirement of actual application.
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Description of drawings
Fig. 1 is the synoptic diagram of mirror blank structure of the present invention;
Among the figure, 1-substrate, 2-titanium alloy transition bed, 3-optical glass.
Embodiment
The matrix material that the present invention adopts is γ-TiAl intermetallic compound; This material has higher modulus and lower density with respect to titanium alloy; The loss of weight that can satisfy large caliber reflecting mirror requires and corresponding dimensional stability (γ-TiAl base high temperature structural investigation of materials commentary, Zhang Deming etc., Chinese rare-earth journal [J]; 2005,23 (165)).Table 1 is depicted as the physical property table of comparisons of TiAl and TC4 alloy.
The physical property table of comparisons of table 1 TiAl and TC4 alloy
The employing nominal composition is the gamma-TiAl alloy of Ti-43Al-9V (at.%); Optical glass is K9 glass, and its thickness is 1mm, belongs to borosilicate glass; Used buffer layer material is Ti-6Al-4V alloy, i.e. TC4.
The preparation method of mirror base according to the invention may further comprise the steps:
The first step is that the diffusion of TiAl and TC4 is connected.Used TiAl base alloy is of a size of long 51mm, wide 37mm, thickness 5mm; Used TC4 is the foil that thickness is about 300 μ m; Both surfaces are stacked together after polishing is cleaned and dried, in the vacuum heating-press sintering stove, spread connection, heat pressing process is 900 ℃ * 1.5h * 20MPa; With the stove cool to room temperature, obtain the TiAl/TC4 web member then.
Afterwards, get into second step of preparation mirror base.After the TC4 surface carried out sanding and polishing, put into chamber type electric resistance furnace and be heated to 550 ℃, carry out after the constant temperature oxidation processes of 1h making the web member surface obtain the even oxide layer of light blue TC4 with the stove cooling.
After the TC4 surface oxidation is good, get into one step of key of preparation mirror base, i.e. connection between TiAl/TC4 web member and the K9 glass.With glass with put in the chamber type electric resistance furnace after the TC4 surface contacts, and apply constant pressure 0.15MPa, hot pressing parameters is 680 ℃ of insulations of temperature 1.5h, then with the stove cool to room temperature.The final preparation of accomplishing the mirror base.
Prepared mirror base, flawless or bubble exist in the glass, between glass and the TC4 and TC4 combine well with interface between the TiAl.20 the thermal shock experiment of this mirror base between 30-400 ℃ shows that cracking phenomena does not appear in glass.
Claims (5)
1. a light reflection mirror mirror base comprises substrate, titanium alloy transition bed and optical glass, it is characterized in that: base material is γ-TiAl intermetallic compound, and titanium alloy transition bed and substrate are combined closely, sealing-in optical glass on the titanium alloy transition bed.
2. light reflection mirror mirror base according to claim 1 is characterized in that: described substrate is flat board or cellular structure.
3. light reflection mirror mirror base according to claim 1 is characterized in that: optical glass is K9 glass, and its thermal expansivity is 7 * 10
-6K
-1
4. light reflection mirror mirror base according to claim 1 is characterized in that: described titanium alloy transition bed is the Ti-6Al-4V alloy that is complementary with the optical glass thermal expansivity.
5. light reflection mirror mirror base according to claim 1 is characterized in that: the thickness of described titanium alloy transition bed is 300 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204173209U CN202305855U (en) | 2011-10-27 | 2011-10-27 | Light reflector blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204173209U CN202305855U (en) | 2011-10-27 | 2011-10-27 | Light reflector blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305855U true CN202305855U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204173209U Expired - Fee Related CN202305855U (en) | 2011-10-27 | 2011-10-27 | Light reflector blank |
Country Status (1)
| Country | Link |
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| CN (1) | CN202305855U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495438A (en) * | 2011-10-27 | 2012-06-13 | 西北工业大学 | Light reflector mirror blank and preparation method thereof |
| CN105137512A (en) * | 2015-09-11 | 2015-12-09 | 兰州空间技术物理研究所 | Manufacturing method of ultra-light reflector |
| WO2018188072A1 (en) * | 2017-04-14 | 2018-10-18 | South China University Of Technology | OPTICS AL-MIRROR WITH HIGH VOLUME FRACTION SiCp/Al COMPOSITE-TITANIUM ALLOY-BISMUTHATE GLASS METAL PLUS DIELECTRIC MULTIPLE FILMS AND METHOD FOR MANUFACTURING THE SAME |
-
2011
- 2011-10-27 CN CN2011204173209U patent/CN202305855U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495438A (en) * | 2011-10-27 | 2012-06-13 | 西北工业大学 | Light reflector mirror blank and preparation method thereof |
| CN102495438B (en) * | 2011-10-27 | 2014-04-16 | 西北工业大学 | Preparation method of light reflector mirror blank |
| CN105137512A (en) * | 2015-09-11 | 2015-12-09 | 兰州空间技术物理研究所 | Manufacturing method of ultra-light reflector |
| WO2018188072A1 (en) * | 2017-04-14 | 2018-10-18 | South China University Of Technology | OPTICS AL-MIRROR WITH HIGH VOLUME FRACTION SiCp/Al COMPOSITE-TITANIUM ALLOY-BISMUTHATE GLASS METAL PLUS DIELECTRIC MULTIPLE FILMS AND METHOD FOR MANUFACTURING THE SAME |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20141027 |
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| EXPY | Termination of patent right or utility model |