Publication details

Evolution of structure and mechanical properties of hard yet fracture resistant WBC coatings with varying C/W ratio

Authors

ALISHAHI Mostafa MIRZAEI Saeed SOUČEK Pavel ZÁBRANSKÝ Lukáš BURŠÍKOVÁ Vilma STUPAVSKÁ Monika PEŘINA Vratislav BALÁZSI Katalin CZIGÁNY Zsolt VAŠINA Petr

Year of publication 2018
Type Article in Periodical
Magazine / Source Surface & coatings technology
MU Faculty or unit

Faculty of Science

Citation
Keywords magnetron sputtering; W-B-C; microstructure; hardness; fracture resistance
Description Preparation of coatings simultaneously exhibiting high hardness and enhanced fracture resistance is a hot topic, as nowadays used ceramic protective coatings show difficulties to cope with increased demands due to their inherent brittleness. Material exhibiting seemingly contradictory combination of mechanical properties like high hardness and moderate ductility enhancing the fracture resistance - was recently predicted by ab initio calculations in the crystalline X2BC system. The presented study is focused on the study of the influence of the C/W ratio on the microstructure, the content of different chemical bonds and the mechanical properties of WBC coatings prepared by magnetron sputtering at moderate temperature.
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