Influence of Mo on the high temperature wear performance of NiCrBSi hardfacings. (November 2018)

• Record Type: Journal Article
• Authors: Dilawary, Shaikh Asad Ali; Motallebzadeh, Amir; Atar, Erdem; Cimenoglu, Huseyin
• Is Part Of: Tribology international. Volume 127(2018)
• Page Start: 288
• Page End: 295
• Publication Date: 2018-11
• Subjects: NiCrBSi -- Hardfacing -- High temperature wear -- Oxide-layer; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2018.06.022
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: This study investigates the effect of 10 wt% Mo alloying of NiCrBSi hardfacing on the microstructure and dry sliding wear performance at room temperature and elevated temperatures up to 700 °C. Mo additions refined the boride and carbide phases in the microstructure and formed a Mo-rich boro-carbide along with a 20% drop in its hardness. It further improved the wear resistance at all tested temperatures due to the formation of Mo oxides on the worn surfaces. Graphical abstract: Highlights: Mo alters the microstructure and hardness of NiCrBSi hardfacing. RT and HT Wear resistance increased with 10 wt% Mo addition. Tribo-oxide formation on the worn surface became more dominate at HTs. Participation of Mo-oxide in tribo-oxide caused better wear resistance at HTs.