New cermets show distinct sintering behavior influenced by the Fe sources and carbon content, suggesting applications in advanced materials.
New TiC based cermets have been obtained by liquid phase sintering using two different Fe containing powders: Fe carbonyl and 17-4PH stainless steel powder. Liquid phase sintering is hindered as the 17-4PH content increases. This is associated to a loss of homogeneity in the powder mixtures and likely to a loss of wettability as reported by other authors. TiC-FeCrMo-17-4PH cermets mainly consist of TiC-(Ti1-x,Mox)yCz grains integrated in a metallic matrix, whose crystalline structure can be modified from martensite to austenite by changing the Fe carbonyl to17-4PH ratio and the carbon content. The observed precipitation of minoritary phases like M7C3 and M23C6 is consistent with the total Cr and C content of the alloys as predicted by Thermo-Calc software and TCFE13 database.
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Soria-Biurrun et al. (2025) studied this question.
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