Abstract
To improve the abrasive wear resistance of titanium alloys, ZrB2-containing protective coatings are deposited by electrospark alloying (ESA). As electrode materials, composite ceramics with different amounts of ZrB2 are used. Some of the coated samples are also subjected to laser treatment to improve the coating by structuring the surface as alternating laser fusion tracks and nonfused sparkdeposited areas. The microstructure and phase composition of the coatings are characterized. The surface layer of the worn laser fusion tracks is found to have increased hardness (up to 22–38 GPa), which is two to four times higher than that of the surface before abrasion (~9.5 GPa).
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