Abstract Modern high-temperature technologies and methods of production of advanced materials impose new requirements on the quality of information on physicochemical properties of oxide systems at high temperatures. Normally, thermodynamic approach for these purposes is the most fundamental and essential. Great attention was paid by M.M. Shultz to extensive development of this approach in the studies of oxide melts, crystals, glasses, ceramics, and coatings using calorimetric, EMF, and high temperature mass spectrometric methods. Advantages of the thermodynamic approach were illustrated by examples of application of the Knudsen effusion mass spectrometric method to studies of oxide systems and materials, which were crucial for the further development of space and aviation industry, energetics, instrument making, communication engineering, metallurgy, energy-saving, and environmental safety. In the discussion of the regularities of vaporization processes and changes of thermodynamic properties in oxide systems, a number of particular systems based on silica and hafnia was considered in detail. Modeling was carried out for these systems using the Generalized Lattice Theory of Associated Solutions. The obtained results assert a necessity for creation of the national thermodynamic data- and model bases essential for further prediction of phase equilibria in oxide systems and materials at high temperatures.

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预测高温下氧化物材料特性的热力学方法

摘要 现代高温技术和先进材料的生产方法对氧化物体系在高温下的物理化学性质的信息质量提出了新的要求。通常，用于这些目的的热力学方法是最基本和必不可少的。MM Shultz 非常关注这种方法在使用量热法、EMF 和高温质谱法研究氧化物熔体、晶体、玻璃、陶瓷和涂层中的广泛发展。热力学方法的优点通过将 Knudsen 渗出质谱法应用于氧化物系统和材料研究的实例加以说明，这对于航天和航空工业、能量学、仪器制造、通信工程、冶金、节能、环保。在讨论氧化物系统中汽化过程的规律和热力学性质的变化时，详细考虑了许多基于二氧化硅和铪的特定系统。使用关联解的广义格子理论对这些系统进行建模。获得的结果表明，有必要创建国家热力学数据和模型基础，这对于进一步预测高温下氧化物系统和材料的相平衡至关重要。使用关联解的广义格子理论对这些系统进行建模。获得的结果表明，有必要创建国家热力学数据和模型基础，这对于进一步预测高温下氧化物系统和材料的相平衡至关重要。使用关联解的广义格子理论对这些系统进行建模。获得的结果表明，有必要创建国家热力学数据和模型基础，这对于进一步预测高温下氧化物系统和材料的相平衡至关重要。