Method of manufacturing articles of ceramic material

Details Method of manufacturing articles of ceramic material Method of manufacturing articles of ceramic material

1982-03-08

1986-04-01

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

156 89, 264 60, 264 62, 264 63, 264 79, 264125, 264325, 264332, 416229A, 416241B, B29C 4310, B28B 1104

Patent

active

045797030

ABSTRACT:
In the manufacture of an article of ceramic material, for example a bladed turbine wheel of silicon nitride, there is first formed a plurality of article parts, at least one of which is a shaped powder body formed from powder of ceramic material mixed with a plasticizer, after which the plasticizer is driven off by a suitable heating operation. The article parts are then assembled together into a configuration conforming to that of the article to be manufactured, and the assembled article parts are surrounded with a gas-impermeable layer, for example a layer of glass. Finally, the assembled parts are isostatically pressed at elevated temperature to form the assembled article parts into a dense, homogeneous article.

REFERENCES:
patent: 3079136 (1963-02-01), Soine
patent: 3311522 (1967-03-01), LeRoy
patent: 3887411 (1975-06-01), Goodyear et al.
patent: 4023966 (1977-05-01), Loersch et al.
patent: 4112143 (1978-09-01), Adlerborn et al.
patent: 4256688 (1981-03-01), Adlerborn
patent: 4296065 (1981-10-01), Ishii
patent: 4381931 (1983-05-01), Hunold
patent: 4384909 (1983-05-01), Layden
patent: 4460527 (1984-07-01), Kato

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