Method of infiltration forming a silicon carbide body with impro

Details Method of infiltration forming a silicon carbide body with impro Method of infiltration forming a silicon carbide body with impro

1992-04-03

1993-04-27

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 62, 264340, 501 88, 501 90, C04B 3556

Patent

active

052059707

ABSTRACT:
A method of infiltration forming silicon carbide bodies having an improved surface finish comprises, infiltrating a porous carbonaceous preform with molten infiltrant to form a silicon carbide body. The body is heated in an inert atmosphere or vacuum to a temperature where the infiltrant is molten while the body is positioned in contact with an infiltrant wicking means. Preferably, the wicking means has infiltrant wicking capillaries at least as large as the infiltrant wicking capillaries in the body. Capillary force draws excess infiltrant on the surface of the body from the surface leaving the reaction formed silicon carbide body with a surface substantially free of excess infiltrant droplets.

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