Review of Preparation, Performance, and Application of Chromium-Carbide-Based Cermets

Chromium-carbide-based cermets have been widely exploited for a number of applications, particularly in petroleum engineering, the metallurgical industry, and aerospace areas, due to their unique properties, such as high hardness and melting point, excellent oxidation, and wear resistance at elevated temperatures. However, the defects of the bulk Cr3C2-Ni cermets are their greater brittleness and lower strength at room temperature. In order to increase the strength and extend the service life of this material, researchers have carried out many explorations of the preparation technology and composition optimization. This paper reviewed the preparation process of bulk Cr3C2-Ni cermets. In addition, the influence of different elements’ addition on the microstructural, mechanical, and wear properties of the cermets were systematically reported. Furthermore, the industrial applications of Cr3C2-NiCr coatings and the prospects for their future development are also introduced.