The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1998
Filed:
Oct. 13, 1995
Hideki Matsuo, Iruma-gun, JP;
Masahiro Kokubo, Iruma-gun, JP;
Takashi Ohbayashi, Iruma-gun, JP;
Yuji Tashiro, Iruma-gun, JP;
Tadashi Suzuki, Iruma-gun, JP;
Masami Kizaki, Iruma-gun, JP;
Haruo Hashimoto, Iruma-gun, JP;
Yasuo Shimizu, Iruma-gun, JP;
Takaaki Sakurai, Tokyo, JP;
Hiroyuki Aoki, Tokyo, JP;
Tonen Corporation, Tokyo, JP;
Abstract
A method for forming dense ceramics, particularly a ceramic coating by a low temperature treatment is provided. The method for forming ceramics according to the invention is characterized in that a polysilazane having a number-average molecular weight of 100 to 50,000 or a modified polysilazane thereof is subjected to a heat treatment, then exposed to an atmosphere containing water vapor or immersed in distilled water containing a catalyst, or both, or is brought into contact with Pd.sup.2+ ions and water, the polysilazane having a skeleton comprising the unit represented by the following general formula (I): ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, a group other than the above and having a carbon atom directly attached to the silicon atom, an alkylsilyl group, an alkylamino group and an alkoxy group; with the proviso that at least one of R.sub.1, R.sup.2 and R.sup.3 is a hydrogen atom. A method wherein said modified polysilazane is only fired at a temperature of 400.degree. C. or below is also provided.