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摘要: 本文用X射线粉末法和金相实验测定了La≤32.2wt%(La≤16.7at%)成份区域内La-Co-Ni三元系相图的室温截面,它包含有四个单相区:α,β,LaCo13和LaCo5xNi5-5x;五个两相区:α+β,α+LaCo13,β+LaCo13,β+LaCo5xNi5-5x和LaCo13+LaCo5xNi<
Abstract: The phase diagram of the La-Co-Ni (La 32.2 wt%) ternary system at room temperature has been determined by X-ray powder method and metallographic examination.The isothermal section at room temperature was found to consist of four single-phase regions: α,β, LaCo13 and LaCo5xNi5-5x; five two-phase regions: α+β, α+LaCo13, β+LaCo13, β+LaCo5xNi5-5x and LaCo13+LaCo5xNi5-5x; two three-phase regions : α + β + LaCo13 and β+LaCo13+LaCo5xNi5-5x. No new phase has been observed in this range. X-ray analysis showed that the maximum solubility of La in β is about 9 wt%.