State-of-the-art abrasion resistance of glass ceramic coatings (GCCs) is set by dense, low closed porosity, defect-and micro-stress-free microstructure since GCCs have low fracture toughness. Titanium diboride (TiB 2 ) is a ceramic material with relatively high strength and durability as characterized by the high melting point, hardness, and wear resistance. In this study, the effect of mill additive TiB 2 hard ceramic particles (HCP) on GCCs was investigated. The precursor glass ceramic system of SiO 2 -Na 2 O-B 2 O 3 -CaO-Fe 2 O 3 was selected. The wear resistance of the GCCs was tested simultaneously by Taber Abraser and by a tribometer. B 2 O 3 , which is formed by the oxidation of TiB 2 , fills the pores and the microcracks on the surface, thus reducing the stress areas and increasing the wear resistance. Increasing the TiB 2 HCP addition yielded a decrease in mass loss of about 81%, wear rate of about 82% and increase in the coefficient of friction of 15%.

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