The Structure and Magnetic Properties of Co₇₇Zr₁₈W₅ Melt-Spun Ribbons

Shifeng Xu, Dan Xu, Zhipeng Hou, Jinbao Zhang, Feng Su, Liyuan Sun, Wenquan Wang

College of Physics, Jilin University, Changchun, China.
College of Science, Shenyang Aerospace University, Shenyang, China.
College of Science, Shenyang Aerospace University, Shenyang, China; College of Physics, Jilin University, Changchun, China.

DOI: 10.4236/wjcmp.2012.24033                

Abstract

Based on X-ray diffraction, microscopic and magnetic analysis, the structure and magnetic properties of Co₇₇Zr₁₈W₅ melt-spun ribbons were studied in this paper. A new element to stabilize the metastable Co5Zr phase was found and the coercivity observed in Co-Zr alloys can be obviously enhanced by proper tungsten substitution. The Curie temperature of Co₇₇Zr₁₈W₅ ribbons is 475℃ which suggests that W doped Co-Zr alloys may become an attractive candidate perma- nent magnets for practical applications in high temperature. Annealing of the Co₇₇Zr₁₈W₅ ribbons results in a decrease of the coercivity which confirmed that the hard magnetic phase is Co₅Zr phase in ₇₇Zr₁₈W₅ melt-spun ribbons.

Keywords

Co-Zr Alloys; Co₅Zr Phase; Coercivity; Melt-Spun; Permanent Magnets

Conflicts of Interest

The authors declare no conflicts of interest.

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