电阻应变计技术六十年(2) 电阻应变计敏感材料的发展(下)

Sixty Years of Electric Resistance Strain Gage Technique (2) Development of Grid Sensing Materials for Electric Resistance Strain Gage

四、应变电阻合金材料的一般特性 3、镍铬改良型合金 为了提高合金的电阻率,降低电阻温度系数,美国在镍铬合金中加入少量的Al、Cu、Fe等元素,研制成牌号为伊文(Evanohm)及卡玛(Karma)等改良型精密电阻合金。英、德、日、瑞典、法国、苏联等国也在镍铬基础上加入Mn、Si、Al、Cu、Mo等元素,相继制成各种镍铬改良型合金,这些合金对提高应变计的性能及扩大应用范围起了良好的作用。几种典型的镍铬改良型合金有:

Grid sensing material is key element of electric resistance strain gage. Its performance will influence all characteristics of strain gage. Development of grid sensing material will bring about a great advance in strain gage. This article treats advanced of grid sensing materials for metal resistance alloy, semiconductor, thin film and thick film.But our discussion today will focus on major property of strain gage alloy.