Self-made fluorosilicic acid and ammonia were used to prepare high purity Si O2 powders by the method of substep precipitation. The effect of p H of the solution, concentration of ammonia and pickling conditions on the purity of Si O2 powders was investigated. The results indicate that after leaching the precipitation in the fluorosilicic acid solution with p H value of 7, the high purity Si O2nano-powders containing regular metal impurity with the mass fraction of only 1.8 ×10-6can be obtained by acid pick...
【更新日期】
2015-09-21
【分类号】
TB383.1;TQ127.2
【正文快照】
杂质Al Na K Ca Mg Ti Fe Cr合计质量分数×10610.34 2.23 0.10 1.03 0.22 0.19 14.92 0.08 29.11随着现代科学技术的进步和高新科技产业的快速发展,优质高纯Si O2粉体的需求量不断增大,它独特的物化性质使其在电路封装、光导纤维、航空、军事工业、特种光学等高端产业中得到广
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