论文部分内容阅读
差热分析已广泛应用于化学、化工、冶金、地质和医学等学科领域,成为一种重要的物理——化学分析手段。分析基本原理是:任何物质在加热或冷却过程中发生化合、分解、脱水、升华、挥发和固体相转变而引起的热焓变化,其能量变化可利用热电偶的特性制成差热装置记录下来。利用差热装置记录下来的ΔT与T之间的关系曲线称作差热曲线,简称DTA曲线。
Differential thermal analysis has been widely used in chemical, chemical, metallurgical, geological and medical disciplines, has become an important physical - chemical analysis. The basic principle of the analysis is that the change of enthalpy caused by the compounding, decomposition, dehydration, sublimation, volatilization and solid phase transformation of any substance during heating or cooling can be recorded by using the characteristics of the thermocouple to make the differential thermal device . The curve of ΔT and T recorded by the differential thermal device is called the differential thermal curve (DTA curve).