1绪言钛是一种性能十分优异的金属，有“现代金属”之美称．最初只应用于航空航天和军工方面，后来逐步扩大到民用工业，并很快就广泛地用于化工、冶金、机械、电力、轻工、建筑、医疗和日用品等10多个领域．随着其他工业的发展，钦的生产规模和产量也逐步扩大，工业越发达的国 1 Introduction Titanium is a very good performance of the metal, the “modern metal” reputation. Originally applied only to aerospace and military applications, it was gradually expanded to civilian industry and quickly became widely used in more than 10 fields such as chemical industry, metallurgy, machinery, electric power, light industry, construction, medical care and daily necessities. With the development of other industries, Chin’s production scale and output also gradually expanded, the more developed countries in industry