Influence of processing parameters on the microstructure and oxidation behavior of hot pressed Ni-20Cr + WC metal matrix composites
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2003
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Materials Science Forum
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Ni20Cr+WC composites with a gradient in the volume fraction of hard WC particles are ideal materials for applications where high temperature oxidation and erosion resistance are desired properties. The WC particles impart erosion resistant and the Cr content of the alloy, oxidation resistance. This paper presents the influence of WC particle content and consequently the extent of densification, on the oxidation behavior of hot pressed Ni20Cr+WC composites. Oxidation measurements in the range 700-1000°C revealed overall parabolic behavior. The increase in oxidation rate with WC content has been attributed to formation of islands of WO3 globules protruding through the Cr2O3.
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KUNIOSHI, C.T.; CORREA, O.V.; BELLINATI, C.E.; RAMANATHAN, L.V. Influence of processing parameters on the microstructure and oxidation behavior of hot pressed Ni-20Cr + WC metal matrix composites. Materials Science Forum, v. 416/418, p. 195-200, 2003. DOI: 10.4028/www.scientific.net/msf.416-418.195. Disponível em: http://repositorio.ipen.br/handle/123456789/7469. Acesso em: 16 Jan 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.