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发明公开
CN101379211A 复合材料用预成型体及其制造方法 失效 - 放弃专利权

复合材料用预成型体及其制造方法
摘要：
本发明提出一种可适用于高速压铸成形法，具有高强度和良好的通气性，并通过该高速成形法，能成形可发挥良好力学特性的金属复合材料的复合材料用预成型体及其制造方法。其是通过混合陶瓷纤维2或/和陶瓷颗粒3，5和硅溶胶7和碳酸钙4，并以规定温度烧结，从该硅溶胶7和碳酸钙4生成钙－硅烧结体11，并由该钙－硅烧结体11包覆陶瓷纤维2或/和陶瓷颗粒3，5，制得将纤维2或/和颗粒3，5相互结合的复合材料用预成型体1。该复合材料用预成型体1具有高强度和良好的通气性，并能适用于可发挥高生产率的高速压铸成形法。
摘要（英）：

A preform for a composite material which has high strength and excellent air permeability and hence is applicable to a high-speed die casting method and which is capable of forming a metal composite material having excellent mechanical properties by a high-speed die casting method. Also provided is a process for producing such a preform. Ceramic fibers or/and ceramic particles are mixed with a silica sol and calcium carbonate and sintered at a predetermined temperature to form a calcium/silicon sinter obtained from the silica sol and calcium carbonate. The calcium/silicon sinter coats the ceramic fibers or/and ceramic particles so that a preform having the fibers or/and the particles bound to each other by the calcium/silicon sinter is obtained. The preform for a composite material has high strength and excellent air permeability and is applicable to the high-speed die casting method capable of attaining high productivity.

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