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发明公开
CN109022870A 一种高硬度PCD复合片及其制备方法 无效 - 撤回

一种高硬度PCD复合片及其制备方法
摘要：
本发明公开了一种高硬度PCD复合片及其制备方法，该制备方法包括：1）将纳米二氧化硅、盐酸分散于醇的水溶液中，接着加入钠盐、铝盐、硼酸、锆盐、钇盐、镍盐、钛酸四丁酯混合，然后滴加碱液并搅拌，最后陈化、干燥以得到干凝胶；2）将干凝胶进行热处理以得到热处理产物；3）将热处理产物、锌粉、钴粉、锡粉和钡粉进行球磨以得到结合剂；4）将金刚石粉末、结合剂在1600‑1800℃、2×1011Pa‑10×1011Pa下烧结以制得所述高硬度PCD复合片。本发明PCD复合片具有优异的硬度，同时该制备方法具有工序简单和操作简便的优点。
摘要（英）：

The invention discloses a high-hardness PCD composite sheet and a preparation method thereof. The preparation method comprises the steps that (1) nano silicon dioxide and hydrochloric acid are distributed into a water solution of alcohol, then, sodium salt, aluminum salt, boric acid, zircon salt, yttrium salt, nickel salt and tetrabutyl titanate are added for mixing, alkali liquor is dropwise added, stirring is conducted, and finally, ageing and drying are conducted so that xerogel can be obtained; (2) the xerogel is subjected to heat treatment so that a heat treatment product can be obtained;(3) the heat treatment product, zinc powder, cobalt powder, tin powder and barium powder are subjected to ball milling so that a binding agent can be obtained; and (4) diamond powder and the bindingagent are sintered at the temperature of 1600-1800 DEG C and the pressure of 2*10<11>-10*10<11> Pa so that the high-hardness PCD composite sheet can be obtained. The high-hardness PCD composite sheethas excellent hardness, and meanwhile, the preparation method has the advantages that the pressure is simple, and operation is easy and convenient.

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