AVALIAÇÃO TRIBOLÓGICA DO AÇO AISI 1045 SUBMETIDO A TRATAMENTO TERMOQUÍMICO DE BORETAÇÃO MULTICOMPONENTE

The use of surface treatments provides improved tribological properties of materials, enabling the use of standard materials, with lower cost and higher toughness, but less hard, in conditions that require high-performance of surface. Compared to surface deposition of thin films, thermochemical processes can improve the surface properties in a simpler and cheaper manner. In this work, solid boriding, nitriding and multicomponent boriding thermochemical treatments were performed on AISI 1045 with the aim of improve the tribological behavior. Multicomponent boriding thermochemical treatment consisted of boriding followed by nitriding, both made in solid mediums. Pin-on-disc wear test were carried out with WCCo counterbody. The results showed a better performance of borided samples.

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