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US 5,219,802 AGranted
Porous ceramic radiation plate
AssigneeIndustrial Technology Research Institute
InventorsChing-Sung Hsiao, Chen-Wen Tsai
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Abstract
Porous ceramic composition comprises 24-45 wt % of gairome, 25-45 wt % of chamotte, 2-10 wt % of low thermal expansivity component, 2-10 wt % of mineralizing agents, and 15-30 wt % of at least two kinds of organic components which provide porosity. The porous ceramic radiation plate is produced by sintering the composition, and the end result is a product that is high in quality and has an efficient thermal radiation transfer.
Claims11
A process for producing a porous ceramic radiation plate, comprising:
- (a) preparing a homogeneous ceramic composition comprising:
- 25-45 weight percent of gairome;
- 25-45 weight percent of chamotte;
- 2-10 weight percent of low thermal expansivity component selected from the group consisting of cordierite and petalite;
- 2-10 weight percent of mineralizing agent;
- - 10weight percent of calcined transition metallic oxide;
- and
- 15-30 weight percent of organic components selected from the group consisting of carbon black and corn starch;
- and
- (b) sintering the composition at 1000.degree.-1350.degree. C. for a time sufficient to produce a porous ceramic radiation plate.
7 more elements
Dependencies are inferred from the claim text.