Sliding wear behavior of WC–Co–Cr3C2–VC composites fabricated by conventional and non-conventional techniques

Abstract

The present work aims are to study the dry sliding wear behavior of WC-12 wt.%Co materials, with or without addition of Cr 3 C 2 /VC grain growth inhibitors, and to sinter them by two different consolidation techniques: conventional sintering and spark plasma sintering (SPS). The dry sliding wear tests were performed on a tribometer with a ball-on-disc configuration using a WC-Co ball as a counterpart material with a normal contact load of 60 N, a sliding distance of 10000 m and a sliding speed of 0.1 m/s. The influence of the grain growth inhibitors and the consolidation techniques in sintered samples were related to the friction coefficient, wear rates and wear pattern damage. Samples sintered by non-conventional technique (SPS) show the best wear resistance and lower friction coefficient. The addition of inhibitors reduces the wear 2 rates in materials consolidated by both techniques. The differences in the wear damage are related to microstructural parameters, mechanical properties and wear rates.

Sliding Wear Behavior of Al2O3–TiO2 Coatings Fabricated by the Suspension Plasma Spraying Technique

“…Although both materials showed an increase in friction coefficient, the evolution was irregular in AT. This behavior is determined by an abrupt removal of fragments from material, which constitutes the tribopair, and produces an increase in plowing and third body in the contact 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 zone [26]. Irregularities found in AT material can be attributed to a larger contribution of third body which still remained and circulated in the contact area.…”

Dry‐sliding wear behavior of 3Y‐TZP/Al2O3‐NbC nanocomposites produced by conventional sintering and spark plasma sintering

“…Continuous measuring of the friction force during the tests were performed using a load cell equipped with a piezoelectric transducer in the loading arm. The wear rate was determined using Equation :…”

Wear behavior of conventional and spark plasma sintered Al2O3‐NbC nanocomposites

“…The wear mass lost was obtained by calculating the difference in mass and the wear rate. The wear rate was calculated using Equation …”