GB1459995A - Vitreous enamel coatings - Google Patents
Vitreous enamel coatingsInfo
- Publication number
- GB1459995A GB1459995A GB5356772A GB5356772A GB1459995A GB 1459995 A GB1459995 A GB 1459995A GB 5356772 A GB5356772 A GB 5356772A GB 5356772 A GB5356772 A GB 5356772A GB 1459995 A GB1459995 A GB 1459995A
- Authority
- GB
- United Kingdom
- Prior art keywords
- enamel
- compound
- wax
- organo
- metallic
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D13/00—After-treatment of the enamelled articles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
1459995 Treating enamel coatings BRITISH GAS CORP 15 Feb 1974 [20 Nov 1972] 53567/72 Heading C1M A method of treating vitreous enamel, in the form of a coating on a substrate, comprises decomposing a compound comprising at least one metal ion, the metal ion being such that when incorporated into the enamel surface it improves the microhardness of the surface (measured by the Vickers method) by at least 10%, the compound being decomposed to the corresponding metal oxide in or on the enamel surface to increase the surface strength and hardness. The metal ion may be Sn, Cu, Ni, Al, Co, Ce, V, Mn, Zr, Ti or Zn, and the compound preferably decomposes at 200-800‹ C. In one embodiment metal halide vapour (e.g. a halide or Cu, Al or Sn) is introduced into a furnace in which it decomposes to the oxide, which is deposited on the enamel. Alternatively, the enamelled article may be immersed in a solution or dispersion of an organo-metallic compound, removed and drained, and heated to decompose the organometallic. Also, a pre-heated enamelled article (e.g. at 400-800‹ C.) may be sprayed with a solution or dispersion of the organo-metallic, the compound pyrolysing to form the oxide on contacting the surface. Also, an enamelled article may be sprayed with organo-metallic and the surface then subjected to oxidation. The organometallic compound may be diisopropyl triethanolamine titanate, or an alkyl titanate, vanadate, zirconate, stanate, zincate or aluminate. The vitreous enamel preferably is one which has been fired at 700-850‹ C., or a titania-opacified white enamel. The invention may be used in providing an improved enamel coating on gas ovens or cookers. A wax coating (e.g. polyethylene wax, silicone wax or carnuba wax) may be provided over the enamel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5356772A GB1459995A (en) | 1972-11-20 | 1972-11-20 | Vitreous enamel coatings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5356772A GB1459995A (en) | 1972-11-20 | 1972-11-20 | Vitreous enamel coatings |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1459995A true GB1459995A (en) | 1976-12-31 |
Family
ID=10468254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5356772A Expired GB1459995A (en) | 1972-11-20 | 1972-11-20 | Vitreous enamel coatings |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1459995A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3000729A1 (en) * | 1979-01-11 | 1980-07-24 | Tno | METHOD FOR APPLYING A SPECTRAL SELECTIVE COATING ON A METAL PLATE |
US20170158863A1 (en) * | 2014-06-25 | 2017-06-08 | Seb S.A. | Cooking Utensil Equipped with a Non-Stick Coating Comprising a Surface That is Mobile at High Temperatures |
-
1972
- 1972-11-20 GB GB5356772A patent/GB1459995A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3000729A1 (en) * | 1979-01-11 | 1980-07-24 | Tno | METHOD FOR APPLYING A SPECTRAL SELECTIVE COATING ON A METAL PLATE |
FR2446328A1 (en) * | 1979-01-11 | 1980-08-08 | Tno | PROCESS FOR THE APPLICATION OF A SPECTRO-SELECTIVE COATING ON A METAL PLATE |
US20170158863A1 (en) * | 2014-06-25 | 2017-06-08 | Seb S.A. | Cooking Utensil Equipped with a Non-Stick Coating Comprising a Surface That is Mobile at High Temperatures |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |