含镍粉末钢是硬质相与软质相的非均质混合物，可减低粉末钢对缺口的敏感性，改善力学性能。
The Ni P/M steel are mixtures of soft phase and hard phase, hence improving the mechanical properties by reducing the susceptibility of breach.
而硅酸盐夹杂物的表面能只为氧化铝的10 ~(- 8)，具备在钢液中均质形核的条件。
The interfacial energy of silicates, however, is only 10-8 times of that of alumina and, thus, the silicates have the precondition of homogenous nucleation in the steel.
本发明内外均质，整球密度均匀，在钢液中定位准确。
The invention of the ball built-in and built-out homojunction, the whole density homogeneity and locate accuracy in steel liquid.
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