GB632442A - Method of coating with quartz by thermal evaporation - Google Patents
Method of coating with quartz by thermal evaporationInfo
- Publication number
- GB632442A GB632442A GB1554747A GB1554747A GB632442A GB 632442 A GB632442 A GB 632442A GB 1554747 A GB1554747 A GB 1554747A GB 1554747 A GB1554747 A GB 1554747A GB 632442 A GB632442 A GB 632442A
- Authority
- GB
- United Kingdom
- Prior art keywords
- quartz
- oxide
- coating
- heating
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Abstract
632,442. Vaporization coating. NOYES, R. C., (Libbey-Owens-Ford Glass Co.). June 12, 1947, No. 15547. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 18. 1948.] Drawings to Specification. [Class 93] [Also in Group XX] A surface is coated with quartz by heating the quartz in intimate contact with a stable solid metallic oxide on or in a heat-radiating support body in a high vacuum and depositing the evaporated quartz on the surface. The oxides of Al, Th, Be, Mg, Ca, Sr, Ba, Ti, Zr, Li, V, Cr, Mo, Ta, W, Na, K, U, Fe, Mn, Co, Ni, Cu, Pb, Sn, Bi, Ce, and Zn may be used and applied in the following ways :-(a) thermally evaporating the oxide and exposing the quartz to the vapour, (b) coating the quartz with the metal and converting the metal to oxide, (c) coating the quartz with a powdered oxide by a tumbling action, (d) intimately mixing powders, (e) treating the quartz with compounds which yield the oxide on heating e.g. hydroxides, nitrates, acetates, formates, carbonate, ammonium vanadate, ammonium tungstate, or higher oxides, and heating, (f) enclosing the oxide in quartz tubes. This coating may be formed by a preliminary heating or as a result of the final heating. The treated quartz is supported and heated electrically above 1500‹ C. in a high vacuum e.g. 10-5 mms in a thoria crucible or a coil, e.g. of W, V, or Mo, and the evaporated quartz deposited on the desired surface supported in the vacuum. Five per cent or generally less than one per cent of metallic oxide is sufficient. In an example a first coil surrounding silver is heated in an evacuated container in which a glass sheet is supported so that the latter is silvered, then second and third coils enclosing Al 2 0 3 are heated so that quartz contained in a fourth coil is coated, and finally the fourth coil is heated so that the quartz evaporates and coats the silvered sheets. The quartz may provide a protective or low reflection coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1554747A GB632442A (en) | 1947-06-12 | 1947-06-12 | Method of coating with quartz by thermal evaporation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1554747A GB632442A (en) | 1947-06-12 | 1947-06-12 | Method of coating with quartz by thermal evaporation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB632442A true GB632442A (en) | 1949-11-28 |
Family
ID=10061073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1554747A Expired GB632442A (en) | 1947-06-12 | 1947-06-12 | Method of coating with quartz by thermal evaporation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB632442A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3034924A (en) * | 1958-10-30 | 1962-05-15 | Balzers Patent Beteilig Ag | Use of a rare earth metal in vaporizing metals and metal oxides |
| US3260626A (en) * | 1961-11-18 | 1966-07-12 | Siemens Ag | Method of producing an oxide coating on crystalline semiconductor bodies |
-
1947
- 1947-06-12 GB GB1554747A patent/GB632442A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3034924A (en) * | 1958-10-30 | 1962-05-15 | Balzers Patent Beteilig Ag | Use of a rare earth metal in vaporizing metals and metal oxides |
| US3260626A (en) * | 1961-11-18 | 1966-07-12 | Siemens Ag | Method of producing an oxide coating on crystalline semiconductor bodies |
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