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Title:
CERAMICS INCORPORATING ENGINE PISTON AND MANUFACTURE OF THE SAME
Document Type and Number:
Japanese Patent JPS59155551
Kind Code:
A
Abstract:

PURPOSE: To lower the manufacturing cost of a piston and to reduce the weight of the same while increasing the strength and the heat-insulating performance of the piston, by coupling a piston top plate made of silicon nitride and the main body of a piston made of an aluminum alloy together by the intermediary of a plate made of zirconia having excellent heat-resisting properties.

CONSTITUTION: A projection 23 is formed at the lower portion of a piston top plate 21 made of silicon nitride and it is fitted into a recess 26 formed in a molded member 24 of zirconia. They are put into a furnace together for sintering the molded member 24 of zirconia, whereby only the molded member 24 is contracted. Here, if the dimensional difference between the outer diameter of the projection 23 of the top plate 21 and the inner diameter of the recess 26 of the molded member 24 is selected to be equal to the dimension of contraction of the molded member 24 caused when it is sintered, the top plate 21 and the molded member 24 are coupled firmly together through sintering of zirconia.


Inventors:
Yamamoto, Hiroichi
Iwamoto, Keiichi
Oguro, Takashi
Application Number:
JP1983000029211
Publication Date:
September 04, 1984
Filing Date:
February 25, 1983
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F02F3/00; F02F7/00; F16J1/01; (IPC1-7): F02F3/00; F02F3/10; F16J1/01



 
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