Al-Ce-Ge体系 500 ℃相平衡的实验测定

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Abstract Combined with optical microscope (OM), X-ray diffraction (XRD) and electron probe microanalysis (EPMA), phase equilibria of the Al-Ce-Ge system at 500 ℃ was investigated by equilibrated alloys method. The results show that, five ternary compounds, i.e. α(CeAl_1.62Ge_0.38), β(CeAl₂Ge₂), γ(CeAlGe), δ(CeAlGe₂) and ε(Ce₂AlGe₆) as well as the liquid phase are verified at 500^oC and the homogeneity range of the δ phase is Ce_24.7~24.8Al_33~33.9Ge_41.3~42.3. Two new ternary compounds, i.e. η(Ce_61.3Al_21.9Ge_16.8) and μ(Ce_55.9Al_11.1Ge₃₃), are observed. In addition, seven three-phase regions α+CeAl₃+γ, Ce₃Al₁₁+CeAl₃+γ, αCeGe_2-x+CeGe+γ, CeAl+CeAl₂+Ce₅Ge₃, Ce₃Ge+Ce₅Ge₃+Ce₃Al, CeAl+Ce₃Al+η and CeAl₂+Ce₅Ge₃+μ are observed.

Key words： Al-Ce-Ge 500 ℃ phase equilibria equilibrated alloys

Received: 13 April 2017 Published: 11 July 2019

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TG113.14

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	LIU Minbo
	LIU Shuhong
	DU Yong

Cite this article:

LIU Minbo,LIU Shuhong,DU Yong. Experimental investigation of the phase equilibria of the Al-Ce-Ge system at 500 ℃[J]. Materials Science and Engineering of Powder Metallurgy, 2018, 23(1): 1-8.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2018/V23/I1/1

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