The structure and phase composition of samples of a ceramic material fabricated from lanthanum hexaboride by the sintering method were investigated. It was found that the formation of a high-quality consolidated structure with closed pores is observed at sintering temperature 1850°C. It is shown that the addition of nickel intensifies the sintering process and levels the influence of the sintering temperature on the grain size and volume fraction of the pores. Nickel in this case is found in the base material of the LaB₆ grains as well as in the form of finely disperse intermetallics on grain boundaries.

中文翻译：

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六硼化镧基陶瓷材料的结构相态研究

研究了六硼化镧烧结法制备的陶瓷材料样品的结构和相组成。发现在烧结温度为1850℃下观察到高质量的具有闭孔的固结结构的形成。结果表明，镍的添加增强了烧结过程，并使烧结温度对孔的晶粒尺寸和体积分数的影响得以平衡。在这种情况下，镍在LaB ₆晶粒的基体材料中以及在晶粒边界上以精细分散的金属间化合物形式存在。