Effects of Boriding on Cavitation Erosion Resistance of Ti6Al4V Alloy

Abstract

A pack boriding technique was employed to obtain a hard coating on the surface of Ti6Al4V alloy in this paper. The microstructure, surface appearance, hardness depth profile and the cavitation erosion behavior of the borided samples in 3.5% NaCl solution were examined. The cavitation erosion resistance of the borided samples was significantly improved as compared with the untreated samples. Increasing in the surface hardness and the compact boride layer contribute to the significantly enhanced cavitation erosion performance of Ti6Al4V alloy.

A new medium for boriding of Ti6Al4V alloy for biomedical applications

“…While Atar et al. obtained a Ti-B layer 32 using commercial Ekabor-2 powders, the worst results in this study were achieved using this medium. Due to this failure, an XRD analysis was not carried out on these specimens.…”

“…However, the related experimental studies were conducted under protective gas atmospheric conditions and/or using expensive equipment. 32,[38][39][40][41][42][43] As a result of the present study, it can be concluded adding aluminum to the solid boriding media prevented surface fractures and decreased the oxidation caused by atmospheric gases. Consequently, it was possible to obtain an undamaged boronized titanium surface via solid-state boriding under atmospheric conditions.…”