A new millisecond high-temperature pulse calorimeter

被引：11

作者：

Reiter, P ^{[1
]}

Kaschnitz, E ^{[1
]}

机构：

[1] Osterreich Giesserei Inst, A-8700 Leoben, Austria

来源：

HIGH TEMPERATURES-HIGH PRESSURES | 2001年 / 33卷 / 05期

关键词：

D O I：

10.1068/htwu155

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A new pulse-heating system for resistive self-heating of metallic specimens has been constructed for the accurate measurement of thermophysical properties. A controlled high current pulse is used to heat alloys in a time interval of approximately 1 s from room temperature into the melting range. From time-resolved measurements of current and voltage drop across the specimen, enthalpy and electrical resistivity are determined. A high-speed pyrometer is used to measure the (time-dependent) temperature of the specimen. From these measured quantities, specific enthalpy, heat capacity, and electrical resistivity as a function of temperature are obtained. Measurements of these thermophysical properties of a pure element have been performed and compared with results of another research group in order to check the accuracy of the system. Results of measurements of a selected technical alloy are reported.

引用

页码：505 / 510

页数：6

共 7 条

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