Phase equilibria of the Al-Si-La system between 0 and 50 at.% La at 600 and 800 °C

JOURNAL OF ALLOYS AND COMPOUNDS

卷:765

Article

Du, Jufeng¹  Tu, Hao^1,2  Peng, Haoping¹  Liu, Ya^1,2  Wu, Changjun¹  Wang, Jianhua^1,3  Su, Xuping³ 

[1] Changzhou Univ, Key Lab Mat Surface Sci & Technol Jiangsu Prov, Changzhou 213164, Peoples R China

[2] Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolta Sci & E, Changzhou 213164, Peoples R China

[3] Changzhou Univ, Natl Expt Teaching Demonstrat Ctr Mat Sci & Engn, Changzhou 213164, Peoples R China

关键词: Al-Si-La;    Phase equilibria;    Microstructure;    Ternary compound;   

DOI  :  10.1016/j.jallcom.2018.05.328

来源: Elsevier

【 摘 要 】

The 600 and 800 degrees C isothermal the sections of Al-Si-La ternary system between 0 and 50 at.% La have been established via a combination of electron microprobe analysis and X-ray powder diffraction. A total of three ternary compounds were confirmed in this work and temporally designated tau(1), tau(2) and tau(3). The three ternary compounds (tau(1)-tau(3)) were found at 600 degrees C. The ternary phase tau(1) spans 43.3 at.% to 61.5 at.% Al, 5.0 at.% to 21.3 at.% Si, and 33.5 at.% to 35.5 at.% La. One ternary compound, tau(1), was identified at 800 degrees C. The tau(1) phase spans 43.6 at.% to 62.6 at.% Al, 4.1 at.% to 22.5 at.% Si, and 33.1 at.% to 35.2 at.% La. The solubility of Al in LaSi(2-)(x2)( )is 39.9 at.% and 41.3 at.% at 600 and 800 degrees C, respectively. The solubility of Si in Al2La at both 600 and 800 degrees C is extremely small. (C) 2018 Elsevier B.V. All rights reserved.

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