Home HOME Kovove Materialy-Metallic Materials 2019 Kovove Materialy-Metallic Materials Vol. 57 (2019), no. 1, pp.1–9

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Kovove Materialy-Metallic Materials Vol. 57 (2019), no. 1, pp.1–9

Title: Microstructure and thermal stability of the Cu-ZrB2 and CuCr1Zr-ZrB2 composites prepared by gas pressure infiltration
Author: A. Opálek, N. Beronská, Š. Nagy, T. Dvorák, P. Štefánik, T. Švantner, P. Švec, K. Iždinský
Abstract: Composite materials based on Cu matrix have a wide range of applications because of their extraordinary features such as high thermal conductivity and high mechanical strength. The preparation of Cu-ZrB2 and CuCr1Zr-ZrB2 composites via gas pressure infiltration technology is described in this work. In contrast to most ceramic materials, ZrB2 is electrically and thermally conductive. All tested samples, i.e. prepared from the ZrB2 porous preform with a porosity of 40 % were infiltrated with molten Cu or CuCr1Zr alloy. Microstructure and homogeneity after infiltration were examined by SEM-EDS microscopy. The interface between the Cu matrix and ZrB2 ceramics was explored by TEM microscopy. As-infiltrated composites were thermally cycled up to 800 °C with heating and cooling rates of 3 °C min–1 in an argon atmosphere.
Keywords: Cu-ZrB2 composite materials, metal matrix, gas pressure infiltration, thermal treatment
Published online: 20-Mar-2019
Year: 2019, Volume: 57, Issue: 1 Page From: 1, Page To: 9
doi:10.4149/km_2019_1_1


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