[Kovove materialy - Metallic materials]
    Mon - April 22, 2024 - 06:47 No. of hits : 1743036 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 57 (2019), Issue 1

Microstructure and thermal stability of the Cu-ZrB2 and CuCr1Zr-ZrB2 composites prepared by gas pressure infiltration
OPALEK, A., BERONSKÁ, N., NAGY, Š., DVORÁK, T., ŠTEFÁNIK, P., ŠVANTNER, T., ŠVEC, P., IŽDINSKÝ, K.
vol. 57 (2019), no. 1, pp. 1 - 9
DOI: 10.4149/km_2019_1_1

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.

Key words
Cu-ZrB2 composite materials, metal matrix, gas pressure infiltration, thermal treatment

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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