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Title:
CERAMIC THERMAL-SPRAYED MEMBER
Document Type and Number:
Japanese Patent JPS63157851
Kind Code:
A
Abstract:

PURPOSE: To provide a titled thermal-sprayed member which is optimum as a member to be used in par part where heating and cooling are repeated in a high-temp. corrosive atmosphere, by laminating and forming an underlying thermal-sprayed layer on the surface of a base material consisting of a metal and intermediate layer consisting of carbide or nitride between the base material and oxide ceramic thermal-sprayed layer on the outermost surface thereof.

CONSTITUTION: The underlying thermal-sprayed layer 2 consisting of an Ni-base alloy, etc., is formed on the surface of the base material 1 consisting of an Al alloy, etc., to form the above-mentioned ceramic thermal-sprayed member. The intermediate layer 5 consisting of the carbide (e.g.: ZrC, etc.) or nitride (e.g.: ZrN, etc.) is provided between said layer 2 and the ceramic thermal-sprayed layer 3 consisting of the oxide ceramics (e.g.: ZrO2, etc.) on the outermost surface side. The carbide or nitride of said intermediate layer 5 has generally an easy tendency to a change to the oxide when exposed to the high-temp. corrosive atmosphere. The oxide layer 6 of the figure, therefore, has the porous structure of high porosity when subjected to the repetition of heating and cooling. Said layer is provided with the excellent heat resistance and heat insulating characteristic and exhibits the functions similar to the functions of the upper thermal-sprayed layer 3.


Inventors:
TOMOTA TAKASHI
MIYAMOTO NORITAKA
Application Number:
JP1986000305780
Publication Date:
June 30, 1988
Filing Date:
December 22, 1986
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
C23C4/06; (IPC1-7): C23C4/06



 
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