物性及目前主要的用途硅在地球上的含量仅次于氧。因其高温下坚硬,故很早以前就用作玻璃、陶瓷的原料。随着钢铁工业的发展,也用于制造铁合金(硅铁、硅锰)或硅合金(硅铬、钙硅)等。而现在硅的用途最重要的是对金属硅的需要。金属硅除用于铝合金外,广泛用于半导体硅片,硅树脂等工业。就现在和今后来说,硅最重要的 Physical properties and the current main purpose of silicon in the Earth’s content after oxygen. Because of its high temperature hard, so long ago as a glass, ceramic raw materials. With the development of iron and steel industry, but also for the manufacture of ferroalloy (ferrosilicon, silicomanganese) or silicon alloy (silicon chromium, calcium silicon) and so on. And now the most important use of silicon is the need for metal silicon. In addition to metal silicon used in aluminum alloys, are widely used in semiconductor silicon, silicone and other industries. Silicon is the most important now and in the future