C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
32/23, 117/88
C23C 16/30 (2006.01) B05C 19/02 (2006.01) C23C 8/28 (2006.01) C23C 10/14 (2006.01) C23C 12/00 (2006.01) C23C 16/32 (2006.01) C23C 16/34 (2006.01) C23C 16/36 (2006.01) C23C 16/442 (2006.01) C23C 16/448 (2006.01)
Patent
CA 1300440
ABSTRACT A method of forming a surface layer of carbide, nitride, carbonitride, or solid-solution on the surface of a material to be treated, which comprises disposing in a fluidized bed furnace a treating agent comprising a powder of a refractory material, and a powder of a metal for forming a carbide, nitride, carbonitride or solid-solution or a powder of an alloy thereof, introducing a fluidizing gas into the fluidized bed furnace to fluidize the treating agent and form a fluidized layer, disposing the material to be treated in the fluidized layer, and introducing a predetermined amount of halide into the fluidized layer, and an apparatus for forming the surface layer on the material to be treated, comprising a furnace body for forming the surface layer in the fluidized layer of the treating agent, a heating furnace for heating the fluidized layer, a halide supply pipe in communication with the outside of the furnace body, and a halide gas jetting pipe disposed within the furnace body, which is connected to the halide supply pipe and has a plurality of apertures opened into the fluidized layer.
541184
Arai Tohru
Endo Junji
Takeda Hiromasa
Kabushiki Kaisha Toyota Chuo Kenkyusho
Smart & Biggar
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