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Near-net-shape forming of ceramic powder under hot pressing and hot isostatic pressing

가압소결과 열간 등가압소결에 의한 세라믹 분말의 정형 성형

Kwon, Yeong-Sam;Kim, Ki-Tae
권영삼;김기태

  • Published : 1997.01.01

Abstract

High temperature densification behaviors of alumina powder compacts were investigated under hot pressing and hot isostatic pressing. An alumina part of valve-head shape was fabricated under hot pressing and its forming process was simulated by finite element calculation. an alumina powder compact encapsulated by a stainless steel container was also densified under hot isostatic pressing. Inhomogeneous deformations during hot isostatic pressing due to the canning effect were observed experimentally and predicted by finite element analysis.

Keywords

Near-Net-Shape;Ceramic;Hot Pressing;Hot Isostatic Pressing;Grain Growth;Diffusional Creep;Power-Law Creep;Finite Element Analysis