附加物对材料低温比热测量精度的影响  

An Analysis of the Influence of Appendage on the Measurement Accuracy of the Specific Heat of Materials at Low Temperatare

作　　者：李昭 

机构地区：[1]航天工业总公司510研究所

出　　处：《低温工程》1996年第1期38-42,共5页Cryogenics

摘　　要：介绍了真空绝热法测量材料低温比热的原理及方法。考虑到测量系统中样品架、加热器及温度计等附加物引入的热容因素，建立了比热测量误差的传递关系式，并给出了分析数据。对具体测量中有关精度的问题进行了探讨。The principle and method for measuring the specific heat of materials at low temperature with the vacumm adibatic method are described. The relationship of the measurement error transfer with the heat capacity of the appendage consisting of the specimen assembly rack, heater and thermometer in the apparatus is established and analysed data are given.Some problems about the measurement accuracy of the specific heat in the measurement system are discussed.

关 键 词：比热 测量误差 温度计 材料 附加物 

分 类 号：TB303[一般工业技术—材料科学与工程]