Cemented borides

Cemented borides with a metallic matrix have also been fabricated successfully from the ternary transition metal borides of so-called x-, ip- and ca-types since these composites can easily be liquid phase sintered with metallic melts. 

After the development of cemented borides with a Fe matrix by Funke et al. [316] and Funke and Yudkovskii [321], this cermet system was recently intensively studied again by Yuriditsky [115], Sigl and Schwetz[116,196], and Jiingling et al. [322,323], and, in connection with an enhanced European research activity, independently by Ottavi et al. [123,124], Ghetta et al. [117], Pastor et al. [324,325], and Sanchez et al. [326]. 

Most of the developments in cemented borides aim at the high wear resistance due to the superior hardness compared to carbide-based hard metals. One of the most important applications are, therefore, the cutting tools where cemented boride have to compete with tungsten carbide, titanium carbonitride, and ceramic materials as well. 

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