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(一)引言随着工业与科学技术的迅速进展,使用金属的条件也愈来愈复杂,因之对金属性能的要求也愈来愈苛刻。为了满足对金属表面性能的要求,各种耐蚀、耐热和耐磨合金都在不断地发展。然而许多合金元素都比较缺乏,必须节约使用。而且特殊合金的价格也往往较高,从经济上说来,总希望少用。
(A) Introduction With the rapid progress of industry and science and technology, the conditions for using the metal are also more and more complicated, and the requirements for the metal performance are also more and more harsh. In order to meet the performance requirements of the metal surface, a variety of corrosion-resistant, heat-resistant and wear-resistant alloys are constantly evolving. However, many alloy elements are relatively scarce and must be economically used. And special alloy prices are often higher, economically, always hope less.