An attempt has been made to develop aluminum metal matrix composite (AMC) by utilizing waste from coal mines. By suitable thermal treatment in plasma reactor the waste colliary product containing mainly Al_2O_3, SiO_2 and carbon has been converted to a useful in-situ composite Al_2O_3 - SiC - C. The in-situ ceramic composite so developed is added to an aluminum melt for the preparation of AMC. For comparison purposes, a few more AMCs are prepared using Al_2O_3 and a mechanical mixture of Al_2O_3 and SiC particulates from indigenous sources. AMC developed by reinforcing aluminum with novel Al_2O_3 - SiC - C in-situ formed composite exhibits superior mechanical, tribological and machining properties. Tensile properties of the cast AMC prepared with in-situ composite at 15 vol.%, Al_2O_3 15 vol.% added singly, and Al_2O_3 and SiC in combination (15 vol.%) registered 92, 80 and 62 MPa respectively. Additionally, the ceramic composite produced through plasma synthesis of colliary shale has been gainfully utilized to produce AMC amenable to hot working, both hot forging and rolling. The wrought product has superior mechanical and tribological properties.
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机译：已经通过利用来自煤矿的废物来开发铝金属基质复合材料（AMC）。通过在血浆反应器中的适当热处理，将含有Al_2O_3，SiO_2和碳的废水产物已转化为一种有用的原位复合材料Al_2O_3-SiC - C.如此开发的原位陶瓷复合材料加入到铝熔体中AMC的制备。为了比较目的，使用Al_2O_3和来自本土来源的Al_2O_3和SiC颗粒的机械混合物制备一些更多的AMC。通过用新型Al_2O_3 - SiC - C原位形成的复合材料通过加固铝开发的AMC表现出优越的机械，摩擦学和加工特性。用原位复合材料在15体积的原位复合制备的铸造AMC的拉伸性能。％，Al_2O_3 15体积％，分别为（15体积％）注册92,80和62MPa的Al_2O_3和SiC。另外，通过血浆合成的陶瓷复合材料已经获得了预防性的，以产生可用作热锻和轧制的AMC适用于热的工作。锻造产品具有卓越的机械和摩擦学特性。
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