Single-point scratch testing for understanding particle engagement in abrasion of multiphase materials

The current research explores the influence of multi-asperity abrasive particles engagement on multiphase materials. WC-Co (WC-15.6% Co) and NbC-cermet (NbC-12% Ni–10% Mo 2 C) hard materials were tested using a scale down single point scratch tester. Multi-asperity patterns produced by implying multiple scratches hardmetal surface parallel repeated sliding. Superimposition interactions has been implemented to study damage evaluation close-up scratches. particle characteristics such as size apex angle replicated diamond indenter their with different applied loads [1–20 N] sliding speeds [0.2–5 mm/s] studied. show decrease in friction coefficient 20–46% 11–30% respectively, while tip radius changes from 200 μm 25 under same operating conditions. wear micro-mechanism mainly plastic deformation fracture when load is increased. An extensive comparative shows prematurely experiences dominated failure than its reference WC-Co. Moreover, defect curvature geometry greatly affects mean angle. • Abrasion studied test approach. Comprehensive comparison for NbC-cermets Damage starts ends buildup layer. material removal closed particles. Mean influenced shape.