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US 5,037,699 AGranted
Heat-resistant, corrosion-resistant inorganic composite bodies and process for preparing the same
AssigneeNippon Carbon Co., Ltd.
InventorsHiroshi Ichikawa, Shiro Mitsuno
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Abstract
A heat-resistant, corrosion-resistant inorganic composite body prepared by impregnating a heat-resistant inorganic compound body with at least one member selected from organosilicon compounds, metal alcoholates and organosilicon compound-metal alcoholate copolymers and then heat treating the thus impregnated body; and a process for preparing said heat-resistant, corrosion-resistant inorganic composite body.
Claims4
A heat-resistant, corrosion-resistant inorganic composite body obtained by:
- (a) impregnating a heat-resistant inorganic compound body with at least one member selected from the group consisting of
- (1) organosilicon compounds having a polycarbosilane skeleton as the main skeleton of formula ##STR3## wherein R.sub.1 and R.sub.2 are each an alkyl group of 1-6 carbon atom, phenyl or hydrogen and are identical or different from each other;
- and m is an integer of 5-50, and
- (2) an organosilicon compound-metal alcoholate copolymer having a modified polycarbosilane skeleton as the main skeleton of formula (2) ##STR4## wherein M.sub.2 is zirconium, aluminium, silicon or titanium;
- R.sub.4, R.sub.5 and R.sub.6 are each an alkyl group of 1-6 carbon atoms, phenyl or hydrogen and are identical or different from one another;
- y is 2 or 3;
- and n is an integer of 5-50,
- (b) heating the thus impregnated heat-resistant inorganic compound body to 100.degree.-700.degree. C. in an oxidizing atmosphere and then
- (c) heating the thus heated inorganic compound body to 150.degree.-2500.degree. C. in a non-oxidizing atmosphere.
6 more elements
Dependencies are inferred from the claim text.