430 Yb_2O_3+Al_2O_3 を添加した窒化ケイ素セラミックスの高温条件下での硬度について

概要

論文の詳細を見る
We study the application of the millimeter wave heating method to the silicon nitride, which includes Yb_2O_3 as an additive. The sintered bodies showed the Vickers harness of 7.5GPa at 1400℃ in a vacuum. about the commercial products for comparison, hardness could not be measured at 1200℃ and higher because the surface was sough. We think that its uncrystallized part with the low melting point evaporated. Probably the oxy-nitride in our specimens did not evaporate because the millimeter wave heating method promotes crystallization. These experimental results showed that the application of the millimeter wave heating method to the silicon nitride is very effective.
社団法人日本機械学会の論文
2003-03-13