Mechanical, tribological and thermal properties of hot pressed ZrB2–SiC composite with SiC of different morphology

摘要: AbstractZrB2–SiC composites were prepared by hot pressing with different sources of SiC to study the effect morphology on densification, microstructure, phase composition and mechanical properties like hardness, fracture toughness tribological (namely, scratch resistance, wear parameters) thermal behaviour composites. Three ZrB2–SiC composites, i.e. ZrB2–SiCP (polycarbosilane derived SiC), ZrB2–SiCC (SiC from CUMI, India) ZrB2–SiCH H. C. Starck, Germany), studied. It is found that composite shows highest hardness (19·13 GPa) (5·30 MPa m1/2 at 1 kgf load) in comparison other Interconnected network, better contiguity between grains impurity content starting powders can play significant roles for achieving high mechanical, Coefficient friction parameters all are ver...