GB1018021A - An insulating vitreous material - Google Patents
An insulating vitreous materialInfo
- Publication number
- GB1018021A GB1018021A GB1712564A GB1712564A GB1018021A GB 1018021 A GB1018021 A GB 1018021A GB 1712564 A GB1712564 A GB 1712564A GB 1712564 A GB1712564 A GB 1712564A GB 1018021 A GB1018021 A GB 1018021A
- Authority
- GB
- United Kingdom
- Prior art keywords
- total
- lead
- pb3o4
- pbo
- present
- 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
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/07—Glass compositions containing silica with less than 40% silica by weight containing lead
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
An insulating glass or vitreous enamel comprises in per cent by weight SiO2, 20-34; Bi2O3, 5-13; PbO, 31-58; it contains no B2O3, lead compounds initially present may be e.g. PbO, Pb3O4, white lead, or lead mono-, di-, or tri-silicate. Also present may be 0-14% in total of one or more of BaO, CaO, MgO, ZnO, and SrO; 0-9% in total of one or more of ClO2, ZrO2, TiO2, and MoO3; and 0-10% in total of Al2O3 and/or La2O3, the balance, if any, consisting of other compatible constituents. The mixture may be smelted at 1150 DEG C. in an oxidizing atmosphere, e.g. provided by use of Pb3O4 in the starting material; the smelt is then quenched in water, and wetground, e.g. to pass 400-mesh (American Standard); the material may be used as a slip for spraying e.g. on to stainless steel. Alternatively, the ground material may be dried, sintered, and pressed, e.g. into beads suitable for a hermetic seal, e.g. a compression seal or feed-through bead. The composition may be yellow and may also be opaque. The material has low thermoneutron capture and consequently does not deteriorate excessively in a nuclear reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1712564A GB1018021A (en) | 1964-04-24 | 1964-04-24 | An insulating vitreous material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1712564A GB1018021A (en) | 1964-04-24 | 1964-04-24 | An insulating vitreous material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1018021A true GB1018021A (en) | 1966-01-26 |
Family
ID=10089720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1712564A Expired GB1018021A (en) | 1964-04-24 | 1964-04-24 | An insulating vitreous material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1018021A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115893841A (en) * | 2023-01-04 | 2023-04-04 | 萍乡电瓷厂电力电器有限公司 | Porcelain insulator semiconductor glaze formula and preparation method thereof |
-
1964
- 1964-04-24 GB GB1712564A patent/GB1018021A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115893841A (en) * | 2023-01-04 | 2023-04-04 | 萍乡电瓷厂电力电器有限公司 | Porcelain insulator semiconductor glaze formula and preparation method thereof |
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