Agency of Industrial Science and Technology

Japan As Represented by Director General of Agency of Industrial Science

Agency of Industrial Science and Technology Ministry of International

Nobuyuki Tamari

Yoshihiro Ebata

Makoto Kinoshita

Yasuo Toibana

Ryozo Hayami

Satoshi Sodeoka

Isao Kondoh

Masanori Kohyama

Isao Kondou

Susumu Mori

Tokuzo Nishi

Takahiro Tanaka

Masahiko Nozawa

Nakoto Kinoshita

Takamichi Kawamoto

Masanori Kouyama

There are disclosed a process for producing a uniformly mixed composite raw material for ceramics by recovering the uniformly mixed composite raw material for ceramics from the dispersion of at least two types of raw materials for ceramics and optionally a component other than said materials in a liquid medium, which comprises coagulating and precipitating the composite raw material together with aluminum hydroxide formed by reacting an aluminum salt with an alkali in the liquid medium; and a uniformly mixed composite raw material for ceramics which is produced by the above process.

Process for producing composite raw material for ceramics and composite

A ceramic implant material is disclosed, which comprises a porous zirconia or silicon nitride ceramic containing silicon carbide whiskers, the pores of which are filled with a material adapted to the tissue.

Ceramic implant materials

Adhesive for oxide ceramics and method of bonding oxide ceramics using it

A method for jointing ceramic elements is disclosed. Ceramic elements to be joined are arranged between a pair of torces each having a nozzle for spouting combustion gas. The joint line of ceramic elements is first heated by flames of combustion gas spouted from each nozzle and, then, a high voltage is applied between said pair of torches. Ceramic elements are joined by said heating and applying a high voltage between torches.

Method for jointing ceramic elements

A composite material composed of a non-oxide type ceramic and iron or an alloy thereof is disclosed, wherein the non-oxide type ceramic is formed with a copper metallized surface and bonded to the iron or alloy thereof with an intermediate layer of Invar steel, Kovar or copper disposed between the copper metallized surface and the iron or alloy thereof.

Non-oxide ceramics-metal composite material

A process for metallizing the surface of a ceramic is provided. The surface of a ceramic is coated with a mixture of SiO.sub.2 and at least one copper compound selected from the group consisting of copper carbonate, copper sulfate, copper sulfide, copper oxide, and copper chloride. Thereafter, the film is heated at 900.degree. to 1300.degree. C. in an oxidizing atmosphere to form a baked layer on the surface of the ceramic. The ceramic having the baked layer formed thereon is subjected to a reduction treatment to form a copper-metallized layer on the surface of the ceramic.

Process for metallizing the surface of a ceramic

Adhesion of two silicon nitride parts is accomplished by interposing a layer of calcium fluoride or a mixture of calcium fluoride with kaoline between the two silicon nitride parts and heating the resultant interposed layer.

Method for adhesion of silicon nitride parts

Growing community of inventors

Ikeda, Japan

Nobuyuki Tamari