The 500°C isothermal section of the Nd–Al–Ti ternary system

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• 作者：Zhou ; Huaiying ; Yao ; Qingrong ; Yuan ; Songliu
• 关键词：Rare earth compounds ; Transition metal compounds ; Crystal structure ; X-ray diffraction ; Phase diagram
• 刊名：Journal of Alloys and Compounds
• 出版年：2004
• 期刊代码：45_09258388
• 类别：ms
• 出版时间：November 3, 2004
• 卷：381
• 期：1-2
• 页码：137-139
• 文件大小：82.6 K

摘要

The phase relations in the Nd–Al–Ti ternary system at 500°C were investigated by powder X-ray diffraction (XRD), differential thermal analysis (DTA), optical microscopy, and scanning electron microscopy (SEM) techniques. The existence of two ternary compounds NdTi₂Al₂₀ and Nd₆Ti₄Al₄₃ were confirmed. The isothermal section of this ternary system consists of 15 single-phase regions, 29 two-phase regions, and 15 three-phase regions. At 500°C, the maximum solid solubilities of Ti in Nd₃Al, Nd₂Al, and NdAl₂ is about 2.4, 3.5, and 16.1at.%, respectively, and that of Nd in Ti, Ti₃Al, TiAl is less than 1at.%.