Joints and connections – Molded joint – Fusion bond – e.g. – weld – etc.
Patent
1986-06-24
1988-02-09
Arola, Dave W.
Joints and connections
Molded joint
Fusion bond, e.g., weld, etc.
403404, 416241B, F16B 1100
Patent
active
047238623
ABSTRACT:
A power-transmitting ceramic to metal joint structure including a first shaft consisting essentially of a sintered ceramic material, one portion of the shaft defining a first mating surface; an intermediate insert consisting essentially of a sintered ceramic material, the insert having two opposite insert mating surfaces, the insert having a thickness between the opposite insert mating surfaces in the range of from about 1.5 to about 20% of a distance defined by the cross section of the first mating surface and a flexural strength of not less than about 70% of the sintered ceramic material comprising the first shaft; a second shaft consisting essentially of metal, one portion of the second shaft defining a second mating surface; and brazing filler means affixing the first mating surface to one of the insert mating surfaces and the second mating surface to the opposite insert mating surface, the aforementioned mating surfaces being affixed in abutting relationships. Preferably, the intermediate insert has a thermal expansion coefficient in the range from about that of the first shaft to about that of the second shaft.
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Ishida Noboru
Ito Masaya
Arola Dave W.
NGK Spark Plug Co. Ltd.
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