前言综观电子工业,其包罗的范围极其广泛。从通讯和信息装置,以及在机械、化工、电力、航空、冶金等工业中起大脑中枢作用的电子计算机和仪器仪表,到现代化生活中常用的电视机、收录机、电冰箱等产品。这些产品广泛地使用的材料有金属电子材料、半导体材料、磁性材料、陶瓷材料以及高分子材料等。电子产品需要的这些材料相对的数量不是很大,以电子金属材料为例,包括硅钢片在内,占钢的产量1％左右。但对材料有特殊的要求。即在 Foreword Looking at the electronics industry, its coverage is extremely broad. From computers and instrumentation to communication and information devices as well as to the brain centers in industries such as machinery, chemicals, power, aviation and metallurgy, to TVs, tape recorders, refrigerators and other products commonly used in modern life. These products are widely used materials are metal electronic materials, semiconductor materials, magnetic materials, ceramic materials and polymer materials. The relative quantities of these materials required for electronic products are not large. Taking electronic metal materials as an example, the production of steel, including silicon steel, accounts for about 1% of the total steel output. But the material has special requirements. That is