Claims
- 1. A process for producing an aluminum-coated glass-ceramic cooking vessel exhibiting improved thermal durability which comprises the steps of:
- a. selecting a glass-ceramic vessel composed of a lithium aluminosilicate glass-ceramic material comprising a principal crystal phase consisting of beta-spodumene solid solution;
- b. preheating at least a selected surface portion of the glass-ceramic vessel to a temperature in the range of about 120.degree.-600.degree. C;
- c. applying to the preheated selected surface portion a molten aluminum metal spray, said spray being produced by melting an aluminum metal powder and being applied in a quantity sufficient to provide an aluminum metal coating on the vessel having a thickness in the range of about 18-28 mils;
- d. providing the aluminum coating with a film of phosphoric acid; and
- e. heating said aluminum coating and film to a temperature at least sufficient to decompose the phosphoric acid.
- 2. An aluminum-coated glass-ceramic cooking vessel provided according to the process of claim 1.
Parent Case Info
This is a continuation, of application Ser. No. 524,521, filed Nov. 18, 1974 now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (1)
Number |
Date |
Country |
696,256 |
Oct 1964 |
CA |
Continuations (1)
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Number |
Date |
Country |
Parent |
524521 |
Nov 1974 |
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