PRELIMINARY INVESTIGATIONS ON MAGNETIC PROPERTIES OF NdFeB ALLOYS WITH HIGH MAGNETIC ENERGY PRODUCT
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Abstract
NdFeB permanent magnets of (BH)max = 41MGOe were prepared by powder metallurgy. A typical specimen, Nd16.4Fe76.6B7 alloy, was measured and analyzed. The crystallization process of this alloy near 1400K appeared very complicated. Non-uniform distribution of Nd atoms in the alloy shows that a second phase may exist. At low temperatures the easy direction for magnetization will become canting.
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