Numerical determination of thermoelectric parameters for two-stage sintering of cBN–Al system samples in a high-pressure cubic cell

Editorial Board PCSS Journal; Oleksiy Liudvichenko; Oleksandr Lyeshchuk; Oleksandr Anisin; Mykola Bezhenar

doi:10.15330/pcss.26.4.875-881

Authors

Oleksiy Liudvichenko Інститут надтвердих матеріалів ім. В.М. Бакуля НАН України
Oleksandr Lyeshchuk Bakul Institute for Superhard Materials of the National Academy of Sciences of Ukraine
Oleksandr Anisin Bakul Institute for Superhard Materials of the National Academy of Sciences of Ukraine
Mykola Bezhenar

DOI:

https://doi.org/10.15330/pcss.26.4.875-881

Keywords:

polycrystalline cubic boron nitride (PCBN), high-pressure apparatus (HPA), thermal state, modeling

Abstract

Preliminary numerical modeling of coupled electric and thermal fields in a six-punch HPA during reaction sintering of massive samples of PCBN has been performed. It was assumed that the sintering of the superhard composite is carried out from the cBN–Al charge. The FEM code was used to solve the steady problem of electro- and thermal conductivity. The conductive properties of the cell materials were adjusted to meet the conditions of its thermobaric loading. The obtained results allow us to determine the level of thermoelectric parameters of two-stage reaction sintering and evaluate the effect of changes in the conducting properties of the cell on the thermal state of PCBN samples.

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