HIGH TEMPERATURE RESISTANT COATED MEMBER BY THERMAL SPRAYING AND ITS PRODUCTION

Japanese Patent JP2983454

B2

PROBLEM TO BE SOLVED: To produce a thermal spraying-coated member excellent in high temp. oxidation resistance and erosion resistance by flying an allow material plurally contg. Co, Ni, Cr and Al at a specified rate and laminating a multilayer-coated layer in which the porosity and oxygen content are prescribed on a substrate by an air thermal spraying method.
SOLUTION: An alloy material contg. at least two kinds among Co, Ni, Cr and Al or that added with at least one kind among Y, Hf, Ta, Ce and B in addition to the above is prepd. This alloy material is used as a thermal spraying powder material, which is flown at a flying rate of ≥250m/s in a thermal spraying heat source and is applied to the surface of a substrate in a state of having intensive collision energy by an air thermal spraying method. Thus, the contact time between the alloy particles and air is shortened even in the case the thermal spraying is executed in the air, and the coating layer having ≤1% porosity and ≤0.2wt.% oxygen content can be laminated to form multilayers, by which the high temp. resistant thermal spraying-coated member excellent in wear resistance can be obtd.

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SAITO MASAHIRO
TAKAHASHI MASASHI
ITO YOSHASU
HARADA YOSHIO
TAKEUCHI JUNICHI

JP24521295A

November 29, 1999

August 31, 1995

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TOSHIBA KK
TOOKARO KK

C23C4/06; C23C4/12; (IPC1-7): C23C4/06; C23C4/12

JP7171661A

Takehiko Suzue

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