Study on preparation technique and properties of magnetostrictive epoxy bonded Tb1-xPrx(Fe0.4Co0.6)1.93 composites
来源期刊：JOURNAL OF RARE EARTHS2008年第4期
论文作者：JIANG Chengyong PAN Jing LIU Jinjun LIU Xincai
Key words：magnetic material; magnetostrictive property; composite; light rare earths;
Abstract: The magnetic and magnetostrictive properties of epoxy bonded Tb1-xPrx(Fe0.4Co0.6)1.93 (0.85≤x≤1.00) composites, prepared with different epoxy proportions using cold compression-molding technique, were investigated. It is found that the optimal conditions were with a compaction pressure of 100 MPa and a mass ratio of resin to powder of 5:100. The Tb0.1Pr0.9(Fe0.4Co0.6)1.93 composite rod had a high magnetostriction of 770 ppm at an applied magnetic field of 960 kA/m, whereas the Pr(Fe0.4Co0.6)1.93 composite reached 500 ppm at 400 kA/m. The good magnetostrictive properties of Pr(Fe0.4Co0.6)1.93 composite at low-field (≤400 kA/m) could be explained by its low anisotropy. These results indicated that the epoxy bonded Tb1-xPrx(Fe0.4Co0.6)1.93 rod samples for high Pr content of x=0.9-1.0 were of practical value.
JIANG Chengyong1，PAN Jing1，LIU Jinjun1，LIU Xincai1
(1.State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Materials Science & Chemical Engineering, Ningbo University, Ningbo 315211, China)
Abstract:The magnetic and magnetostrictive properties of epoxy bonded Tb1-xPrx(Fe0.4Co0.6)1.93 (0.85≤x≤1.00) composites, prepared with different epoxy proportions using cold compression-molding technique, were investigated. It is found that the optimal conditions were with a compaction pressure of 100 MPa and a mass ratio of resin to powder of 5:100. The Tb0.1Pr0.9(Fe0.4Co0.6)1.93 composite rod had a high magnetostriction of 770 ppm at an applied magnetic field of 960 kA/m, whereas the Pr(Fe0.4Co0.6)1.93 composite reached 500 ppm at 400 kA/m. The good magnetostrictive properties of Pr(Fe0.4Co0.6)1.93 composite at low-field (≤400 kA/m) could be explained by its low anisotropy. These results indicated that the epoxy bonded Tb1-xPrx(Fe0.4Co0.6)1.93 rod samples for high Pr content of x=0.9-1.0 were of practical value.
Key words:magnetic material; magnetostrictive property; composite; light rare earths;
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