The quasi-binary phase diagrams of R 2Fe14B–Ce2Fe14B (R = Nd, Pr) systems

Author:

Xu Chengfu123,Fu Senyang3,Peng Ling4,Yang Yongquan1,Gao Xinqiang4,Ma Lei2,Tian Jinping2,Liu Rongjin3,Gu Zhengfei2,Yao Qingrong2,Rao Guanghui2,Cheng Linyi2

Affiliation:

1. Guangxi Key Laboratory of Special Engineering Equipment and Control, School of Mechanical Engineering , 326768 Guilin University of Aerospace Technology , Guilin 541004 , Guangxi , P.R. China

2. Guangxi Key Laboratory of Information Materials , Guilin University of Electronic Technology , Guilin 541004 , Guangxi , P.R. China

3. College of Material Science and Engineering , Guilin University of Technology , Guilin 541004 , Guangxi , P.R. China

4. Ganjiang Innovation Academy , Chinese Academy of Sciences , Ganzhou 341119 , Jiangxi , P.R. China

Abstract

Abstract The phase relations of the R 2Fe14B–Ce2Fe14B (R = Nd, Pr) pseudobinary systems have been investigated by using X-ray powder diffraction, scanning electron microscopy equipped with energy dispersive X-ray spectroscopy and differential thermal analysis. The X-ray powder diffraction results show that continuous solid solutions were formed in this R 2Fe14B–Ce2Fe14B (R = Nd, Pr) pseudobinary systems, and all (R , Ce)2Fe14B solid solutions belong to the tetragonal structure with space group P42/mnm. With the increase in Ce content, the lattice parameters a, c, the peritectic reaction temperatures of the (R, Ce)2Fe14B (R = Nd, Pr) solid solutions decrease linearly, and the cell volume V varies in the form of the regression line. Based on the X-ray powder diffraction results and differential thermal analysis data, the quasi-binary phase diagrams of the R 2Fe14B–Ce2Fe14B (R = Nd, Pr) systems have been established.

Publisher

Walter de Gruyter GmbH

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