金属FCC-Al热容的研究

The Study on Heat Capacity of Metal FCC-Al

用OA理论结合Debye-Gr櫣neisen模型,计算了FCC-Al从0K到熔点(933·47K)的热容曲线。将计算结果与实验值进行比较,发现理论值偏低,对其原因进行了系统分析。对理论模型计算值进行适当修正,发现修正后的数据和实验值较吻合。与SGTE数据库绘制的热容曲线比较,得知SGTE给出的FCC-Al的热容数据不完善。最终由理论计算的修正值并结合SGTE数据库,给出了从0K到沸点FCC-Al的热容曲线,实现了对金属元素Al热容的完整描述。

For temperature from OK to melting point（933.47K）, the Cp of FCC-Al with the OA method and Debye-Grüneisen model is calculated. Comparing with the experiment date,the reason of lower calculated data with the system method is analyzed. So the model is corrected, and the result is uniform with the experiment data comparing with the Cp of SGTE,we find that the data of SGTE is not abundant. At last,with the calculated data and the data of SGTE,the full description of the Cp of FCC-Al from OK to boiling point is implemented.