Agency of Industrial Science and Technology

Ministry of International Trade & Industry

Agency of Industrial Science and Technology Ministry of International

Hirofumi Shimura

Yuji Enomoto

Kazunori Umeda

Yuko Tsuya

Yusei Noguchi

Yoshitaka Tatsue

Shinya Sasaki

Hidenori Shinno

A coating film of a carbon allotrope is formed on a substrate by continuously supplying a fine carbon powder onto the substrate and simultaneously irradiating the fine carbon powder with a laser beam of a high output level thereby inducing sublimation of the fine carbon powder, and quenching the sublimated fine carbon powder to cause deposition thereof on the substrate.

Method for producing carbon allotrope

An optical mirror in which a mirror surface formation material, e.g. aluminum, is coated on a substrate consisting of a c/c composite and having a predetermined shape. The coated mirror surface formation material layer is ultrahigh precision machined to a small thickness such that its deformation is suppressed by the substrate.

Optical mirror with c/c composite substrate and an intermediate layer of

Self-lubricating wear-resistant composite materials are produced by blending a metal powder matrix with a combination of molybdenum disulfide and tungsten disulfide powders, compression-molding the blend and then sintering the molding at 800.degree. to 1000.degree.C. When the combination of molybdenum disulfide and tungsten disulfide is blended with a metal powder matrix as described above, the molybdenum disulfide reacts with the metal powder matrix and consequently reinforces the metal matrix and the tungsten disulfide is dispersed as a lubricant element in the resultant composite material, giving rise to a composite material excellent in mechanical strength and lubricating property.

Self-lubricating wear-resistant composite materials

Growing community of inventors

Tsukuba, Japan

Hirofumi Shimura