The purpose of this study was to evaluate the mechanical properties of beryllide (BeTi) fabricated by a plasma sintering method to provide important properties data for the material database for DEMO design. Single-phase BeTi powders were successfully fabricated by the homogenization treatment. Plasma sintering was performed using the homogenized powders at various temperatures to investigate the effect of sintering temperature on the density and microhardness of BeTi. The sintering density of BeTi increased with an increase in sintering temperature from 900 to 1000 °C and then saturated above 1000 °C. The sintering density was almost equal to the theoretical density. The variation in Vickers microhardness as a function of temperature was similar to that of sintering density. The fracture toughness values of BeTi calculated using Anstis, Evans and Charles, Tanakaequations, and Japanese industrial standards (JIS) R1607 criteria were approximately 2.16, 2.07, 2.00, and 2.43 MPa·m, respectively.

中文翻译：

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等离子烧结铍钛金属间化合物的力学性能

本研究的目的是评估等离子烧结法制备的铍化物（BeTi）的机械性能，为DEMO设计的材料数据库提供重要的性能数据。通过均质化处理成功制备出单相BeTi粉末。采用均质粉末在不同温度下进行等离子烧结，研究烧结温度对 BeTi 密度和显微硬度的影响。BeTi的烧结密度随着烧结温度从900℃升高到1000℃而增加，然后在1000℃以上达到饱和。烧结密度几乎等于理论密度。维氏显微硬度随温度的变化与烧结密度的变化相似。使用Anstis、Evans 和Charles、Tanaka 方程以及日本工业标准(JIS) R1607 标准计算的BeTi 断裂韧性值分别约为2.16、2.07、2.00 和2.43 MPa·m。