Theoretical Prediction of Thermal Pressure for some Oxide Minerals

IF 1.2 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

Proceedings of the National Academy of Sciences, India Section A: Physical Sciences Pub Date : 2025-12-05 DOI:10.1007/s40010-025-00954-7

Anjani K. Pandey, Prachi Singh, Shivam Srivastava, Chandra K. Dixit, Shipra Tripathi

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Abstract

In present work, we have theoretically calculated the value of thermal pressure and thermal expansivity (α) of three oxide minerals viz. MgO (Magnesium Oxide), Al₂O₃ (Aluminiumoxide/Alumina)and Mg₂SiO₄ (Forsterite) by using three well known relation (I). Shanker relation, (II). Singh relation and (III). Shanker and Kushwah relations. The Calculated result of thermal pressure by using the said relation and for said materials shows all the three relation corresponds well with experimental value upto temperature 1400 K then after they starts deviating with experimental value but the deviation is very least. Further for calculated value of thermal expansivity (α) by using Anderson relation with the Shanker et al. relation, Singh relation and Shanker and Kushwah relation, it shows that when the said equations submitted in Anderson relation, they give entirely different values of thermal expansivity and they do not correspond well with each other.

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某些氧化矿物热压力的理论预测

本文利用三个关系式(I)，从理论上计算了MgO（氧化镁）、Al2O3（氧化铝/氧化铝）和Mg2SiO4 （Forsterite）三种氧化矿物的热压值和热膨胀系数（α）。Shanker关系，（II）。Singh关系与（III）。尚克和库什瓦的关系。利用该关系式和所述材料的热压计算结果表明，在温度为1400k之前，三者均与实验值符合较好，然后开始与实验值发生偏差，但偏差最小。进一步用Anderson关系式与Shanker等关系式、Singh关系式、Shanker和Kushwah关系式计算热膨胀系数（α），结果表明，上述方程在提交Anderson关系式时，给出的热膨胀系数值完全不同，且不能很好地对应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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