Abstract

A computer model is developed on the basis of the finite-element method for the temperature field formed during the sintering of large-size boron carbide products in the working cell of a high-pressure apparatus at a pressure of 0.5–1.0 GPa and temperatures of 1700–1750°C. The dependence of the thermophysical properties of a sample on the porosity and temperature in the process of sintering is taken into account. It is shown that the selection of geometric parameters for the constructional elements of the working cell of a high-pressure apparatus makes it possible to find such a cell structure, whose application may provide a nearly uniform temperature field in a large-size sample under sintering and uniformity of the density and physicomechanical properties of the sintered sample.

中文翻译：

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基于碳化硼的大型产品烧结过程中高压设备中的温度场建模

摘要

在有限元法的基础上，开发了一种大型模型，用于在高压设备的工作单元中，在0.5–1.0 GPa的压力和温度下，烧结大型碳化硼产品时形成的温度场。 1700–1750°C。考虑到样品的热物理性质在烧结过程中对孔隙率和温度的依赖性。结果表明，为高压设备的工作单元的结构元件选择几何参数可以找到这样的单元结构，其应用可以在烧结后的大尺寸样品中提供几乎均匀的温度场。烧结样品的密度和物理力学性能的均匀性。