無加圧焼結法により作製したAl_2O_3/Cr_3C_2複合体の評価 (第1報)

概要

論文の詳細を見る
Alumina composites containing two different sizes and various compositions of Cr_3C_2 were pressurelessly sintered at 1550℃ for 2h in a purified Ar atmosphere. The chemical stability of chromium carbide, microstructure, densification and mechanical properties were studied. The phase stability of Cr_3C_2 was found quite sensitive to the temperature and oxygen content in the sintering environment. The addition of Cr_3C_2 played an important role in the grain growth of alumina. Coalescence of Cr_3C_2 was observed along the grain boundaries of alumina in samples containing high Cr_3C_2. By controlling the phase stability, and the amount and particle size of Cr_3C_2, a flexural strength of 500 MPa, 57% enhancement, was obtained.
社団法人日本セラミックス協会の論文
1996-09-01