Sumitomo Electric Industries, Limited

Tadafumi Adschiri

Naoji Fujimori

Takahiro Imai

Kouichi Iwata

Seigou Sakagami

Junji Degawa

Takehiko Furusawa, Deceased

Satoshi Wakamatsu

Makoto Kawase

Granular diamond suitable for use as an abrasive grain for polishing is synthesized from gaseous phase by a process for the synthesis of granular diamond, comprising subjecting a mixed gas containing an organic compound and hydrogen to a treatment to form plasma and depositing diamond on substrate grains dispersed and fluidized in the resulting plasma space, characterized in that the substrate grains are dispersed and fluidized by the mixed gas fed at a flow rate of at least the terminal velocity of the grains and an AC or DC electric field is applied to a zone whose grain concentration in the space is in the range of 1 to 20% by volume.

Process for the synthesis of granular diamond

An apparatus and a method of producing a high density fiber reinforced composite material operate for lowering the porosity of a porous fiber reinforced composite material. A large number of particles arranged in a reaction tube are pushed up by the pressure of gases flowing from a gas inlet port toward a gas outlet port to enter floating states and to collide with the porous fiber reinforced composite material which is fixed in the reaction tube. In this state, matricies are formed in pores of the porous fiber reinforced composite material through chemical vapor infiltration. The large number of floating particles prevent an adhesion between the surface of the porous fiber reinforced composite material and blocking with soot, while preventing the pores from blocking with soot.

Apparatus for and method of producing high density fiber reinforced

Growing community of inventors

Miyagi, Japan

Tadafumi Adschiri