Hot Isostatic Pressing in Oxygen of Ferrite Magnet
Hot Isostatic Pressing in Oxygen of Ferrite Magnet
复制标题
铁氧体磁铁的氧中热等静压
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
T. Shinohara
中科院分区：
文献类型：
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作者：
Yasunobu Ogata;H. Iwasaki;Y. Kubota;Mikio Yamamoto;T. Iimura;T. Shinohara
研究了在5°%O2-95%Ar气氛中热等静压对锶铁氧体磁体磁性能的影响。结果表明，热等静压使晶界空洞尺寸减小，但未见明显的晶粒长大，等静压坯体密度约为5.03×103 kg/m3。磁学测量表明，热等静压并没有显著降低矫顽力，保持了预烧体良好的B-H曲线的方向性。在MHE=318kA/m时，等静压磁体的剩余磁通密度BR的典型值为0.438T。
The effect of hot isostatic pressing in 5°%,O 2 -95%Ar on the magnetic properties of Sr ferrite magnet was studied. It was found that the size of voids at grain boundaries are decreased by hot isostatic pressing without substantial grain growth and the density of isostatically hot-pressed body is about 5.03x10 3 kg/m 3 . Magnetic measurement revealed that the hot isostatic pressing does not signiticantly decrease coercive force and keeps the good squareness of B-H curve of pre-sintered body unchanged. The typical value of residual flux density Br of the isostatically hot-pressed magnet is 0.438T at MHe=318KA/m.