Experimental Investigation of Isothermal Section in the La–Co–Ni System at 723 K

Kailin Huang; Liming Xiao; Qingkai Yang; Lu Yang; Zhuobin Li; Zhao Lu; Qingrong Yao; Jianqiu Deng; Lichun Cheng; Caimin Huang; Qianxin Long; Jiang Wang; Huaiying Zhou

doi:10.3390/met12101747

Metals (Oct 2022)

Experimental Investigation of Isothermal Section in the La–Co–Ni System at 723 K

Kailin Huang,
Liming Xiao,
Qingkai Yang,
Lu Yang,
Zhuobin Li,
Zhao Lu,
Qingrong Yao,
Jianqiu Deng,
Lichun Cheng,
Caimin Huang,
Qianxin Long,
Jiang Wang,
Huaiying Zhou

Affiliations

Kailin Huang: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Liming Xiao: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Qingkai Yang: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Lu Yang: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Zhuobin Li: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Zhao Lu: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Qingrong Yao: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Jianqiu Deng: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Lichun Cheng: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Caimin Huang: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Qianxin Long: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Jiang Wang: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China
Huaiying Zhou: Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 530004, China

DOI: https://doi.org/10.3390/met12101747
Journal volume & issue: Vol. 12, no. 10
p. 1747

Abstract

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The isothermal section of the La–Co–Ni ternary system at 723 K has been constructed in this work by using X-ray diffraction (XRD), scanning electron microscopy, and energy dispersion spectroscopy techniques (SEM-EDS). The experimental results show no existence of ternary compounds at 723 K. The isothermal section consists of 16 two-phase regions and 8 three-phase regions. La3Co and La3Ni, La2Co3 and La2Ni3, La2Co7 and La2Ni7, and LaCo5 and LaNi5 form a continuous solid solution. The ternary solid solubility of Ni in LaCo13 phase and La2Co1.7 phase was determined to be 15.61 at.% and 9.61 at.%, respectively. The solid solubility of Co in the LaNi3, La7Ni3, and LaNi phases was 18.07 at.%, 5.62 at.%, and 8.49 at.%, respectively. The present experimental results are important for the design of La(Fe,Si)13-based magnetic refrigeration materials.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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