论文部分内容阅读
精密陶瓷又称烧结陶瓷或工程陶瓷,目前迅速发展,广泛运用于机械零件(耐磨、耐蚀)、加工工具(磨削、切削)及特殊功能(电、磁等)材料等三大领域。精密陶瓷从原料、工艺和应用与粉末冶金相似,因此国内外将其列入粉末冶金领域。 精密陶瓷的烧结过去一般用粉末冶金烧结炉,因此烧结炉成为广泛研究的重要课题,该炉的发展已具有新的特点。 目前电磁、光学、机械性能最优异的精密陶瓷是非氧化物陶瓷中的氮化硅(Si_3N_4),可以广泛用作汽车发动机零件、切削工具、耐热机械零件等。因此以氮化硅为例说明。
Precision ceramics, also known as sintered ceramics or engineering ceramics, are rapidly developed and widely used in the three major fields of mechanical parts (wear and corrosion resistance), processing tools (grinding and cutting) and special functions (electricity, magnetism, etc.). Precision ceramics from the raw materials, technology and applications similar to powder metallurgy, it will be included in the field of powder metallurgy at home and abroad. Sintering of precision ceramics used the powder metallurgy sintering furnace in the past. Therefore, the sintering furnace has become an important subject of extensive research. The development of the furnace has been given new features. At present, the finest ceramics with electromagnetic, optical and mechanical properties are silicon nitride (Si_3N_4) in non-oxide ceramics and can be widely used as automobile engine parts, cutting tools, heat-resistant mechanical parts and the like. Therefore, silicon nitride is used as an example.