Gas release from the ZrO2-Y2O3 ceramics used in the seeded growth of diamond single crystals

被引：0
|
作者：
N. I. Polushin
A. A. Pozdnyakov
L. A. Andreev
E. A. Novikova
S. M. Yakovtsev
机构：
[1] State Technical University,Moscow Institute of Steel and Alloys
[2] Russian Academy of Sciences,Institute of High
来源：
Russian Journal of Non-Ferrous Metals | 2009年 / 50卷
关键词：
synthetic single crystals; ZrO; -Y; O; ceramics; gas release;
D O I：
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中图分类号：
学科分类号：
摘要：
Gas release from the ZrO2-Y2O3 ceramics used for the seeded growth of diamond single crystals in a temperature range from 100 to 700°C and a pressure of 10−4 Pa is investigated. It is experimentally found that the air content in the pores of ceramic elements of the container is 0.086 sccm3/g. The coefficient of the gas release and diffusivity are determined; this allows one to determine the degassing time for which the gas fraction from the sample attains a definite value from the starting amount. It is revealed that vacuum annealing at a temperature no lower than 700°C and P = 10−4 Pa provides a decrease in the content of the adsorbed gas on the parts of the reaction cell by an order of magnitude.
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页码：166 / 169
页数：3
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