稀土元素钪及其应用  

Rare Earth Elements Scandium and Its Application

作　　者：李关云[1] 刘文军[1] 游超[1] 崔晖[1] 田媛[1] 苏敏[1] 

机构地区：[1]国家知识产权局专利局专利审查协作北京中心,北京100083

出　　处：《广东化工》2013年第14期115-115,108,共2页Guangdong Chemical Industry

摘　　要：钪是一种稀土元素,它具有高熔点、高电阻、高生成热、低蒸汽压、多晶转变温度高等特性。这些特性决定了其良好的耐高温(1500℃)性、耐高温强辐照、高温绝缘性好、还原稳定性高和抗高温等离子溶蚀性等优点。虽然钪元素昂贵的价格限制了其应用范围,但其优异的性能决定了它在航空航天、石油化工、高温合金、半导体等领域具有不可替代的作用。Scandium shows high melting point,low vapor pressure,higher electric resistivity,and no phase transformation up to very high temperature.These characteristics determine its good heat-resistant（1500 ℃）,high temperature irradiation resistant,high temperature insulation,high thermal stability and high resistance to high-temperature plasma corrosion.Although the high price of scandium limited the area of its application,its excellent performance make it a candidate for potential application in the aerospace,petrochemical,superalloy,semiconductor and other sophisticated areas.

关 键 词：钪 稀土元素 掺杂 陶瓷 

分 类 号：TQ[化学工程]