EROSION WEAR RESISTANCE OF TITANIUM-MATRIX COMPOSITE Ti/TiN PRODUCED BY DIODE-LASER GAS NITRIDING

作者：Lisiecki Aleksander^*; Kurc Lisiecka Agnieszka

来源：Materiali in Tehnologije, 2017, 51(1): 29-34.

DOI：10.17222/mit.2015.160

• laser nitriding
• titanium alloy
• diode laser
• erosion wear
• composite

A prototype experimental stand equipped with a novel high-power direct diode laser (HPDDL), characterized by unique properties of the laser beam, was applied for producing titanium-matrix composite (TMC) surface layers during the laser gas nitriding (LGN) of the titanium alloy Ti6Al4V in the liquid state. The erosion wear characteristic of the substrate and nitrided surface layers was investigated. It was found that the erosion wear resistance of the composite surface layers is significantly higher than the substrate of titanium alloy Ti6Al4V. The erosion wear resistance depends on the angle of incidence. Reducing the angle of incidence decreases the weight loss of the composite surface layers and simultaneously increases the weight loss of the Ti6Al4V. It was found that the weight loss of the composite surface layer with the highest resistance is over six times lower compared to the Ti6Al4V, at an incident angle of 15 degrees.

• 出版日期2017