【摘要】 对在氩气惰性气氛下,采用-200目球状雾化坡莫合金粉末高能球磨制备屏蔽涂料用片状坡莫合金粉末的工艺参数进行试验分析。试验得出:球状雾化粉末通过钢球的冲击、摩擦作用分层、延展,在150min时粉碎成为片状粉末,采用2%物料质量的硬脂酸作为粉体分散剂能很好的起到助磨、防止二次团聚的作用,球料比(BPR)选用20∶1~30∶1为佳,在500 rpm的转速下能制备出片径d50≤50μm、片厚σ≤5μm的片状坡莫合金粉末。更多还原

【Abstract】 Flaky permalloy powder for shielding coatings was prepared by high-energy ball mill using-200 Mesh spherical atomizing permalloy powder under argon inert atmosphere.The test and analysis for the effect of technical parameters on powder characteristics were investigated.The test results show that the spherical atomizing powder was laminated,elongated and fragmented into flaky powder after crash and friction of steel ball in 150min.Using 2 percent of stearic acid as powder dispersant can conduce to grinding well to prevent the secondary agglomeration.The optimized ratio of ball to powder(BPR) chose 20:1~30:1.Finally the flaky permalloy powder with flake diameter of d50≤50μm and thickness of σ≤5μm can be obtained in the rotating speed of 500rpm.更多还原