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一前言 TiC在各种金属碳化物中硬度最大、熔点很高(325℃),并具有优良的耐热性、耐氧化性、耐腐蚀性以及比重小等优点,它在很多现代科技领域中有着重要的用途,所以它是近年来愈来愈引人注目的一种工业材料,是今后重点发展的金属碳化物之一。目前生产TiC的方法主要有如表1所示的几种,其市售TiC粉末的组成见表2。真空碳化法、金属浴法、氢化钦碳化法等的工艺流程包括:将Ti或TiO_2或TiH_2与碳黑一起放在研磨设备中制备炉料;将炉料放人真空或碳管电炉中,在H_2或CO气氛中锻烧;
INTRODUCTION TiC has the highest hardness, high melting point (325 ° C) in all kinds of metal carbides and has the advantages of excellent heat resistance, oxidation resistance, corrosion resistance and small specific gravity. It has been used in many modern fields of science and technology Important use, so it is more and more attractive in recent years, an industrial material, is the focus of the future development of one of the metal carbides. At present, there are several methods for producing TiC as shown in Table 1, and the composition of the commercially available TiC powder is shown in Table 2. The process of vacuum carbonization, metal bath, and hydrogenation of carbonized carbon includes the following steps: placing Ti or TiO 2 or TiH 2 together with carbon black in a grinding device to prepare a charge; placing the charge in a vacuum or carbon tube electric furnace, CO atmosphere calcined;