A theory of friction and wear during the abrasion of metals

Delamination of thin coatings at scratching: experiments and numerics

“…In [Wredenberg and Larsson 2007;2009] master curves for the relation between and the ploughing part of the coefficient of friction, here denoted µ p ( ), are presented, and it can thus be concluded that µ p ( ) ≈ 0.21 here. The current measurements gave an apparent coefficient of friction of µ 0 ≈ 0.28, and remembering that the interfacial and ploughing friction may be separated as for µ i < 0.2 [Wredenberg and Larsson 2007;Bowden and Tabor 1950;Goddard and Wilman 1962], it was concluded that the coefficient of interfacial friction µ i was 0.07. This value was then used throughout the numerical simulations (in contrast to the situation at normal indentation [Carlsson et al 2000], relevant local and global variables are quantitatively very much influenced by the presence of interfacial friction).…”

An investigation into the mechanisms of closed three-body abrasive wear

“…A large increase in particle size has not resulted in a significant increase in the material removal factor, f . If the cutting particles are of similar shape, 3 Optical microscopy suggests that the abrasive particles are fairly close to cubic in shape.…”

“…This process has been studied extensively by experimenters using model cutting tools [2] or abrasive papers [3,4]. Models have been developed using slip line field solutions to determine material flow around sliders [5,6]; these can, however, only model plastic flow for a 2D indentor.…”

Effect of Abrasive Size on Wear

“…The effect of the abrasive size on the wear rate has been studied for homogeneous materials (Anvient, 1960;Dunn, 1961;Goddard;Wilman, 1962;Mutis, 1965;Nathan;Jones, 1966;Larsen-Badse, 1968a;Larsen-Badse, 1968b;Samuels, 1971;Date;Malkin, 1976;Sin et al, 1979;Finnie, 1981a;Finnie, 1981b;Sasada et al, 1984;Jacobson et al, 1988;Costa et. al., 1997;Gahlin;Jacobson, 1999;Sevim;Eryurek, 2006).…”

“…The authors reported that the wear rate increased with the increase in the abrasive size in the range of 5 to 70 µm and was independent of the wear rate within the abrasive size ranges of 70 to 140 µm. (1960) and Goddard and Wilman (1962) proposed that the CPS is controlled by clogging of the smaller sized abrasives. Due to the clogging is not possible in threebody abrasive and erosion, this explanation cannot explain de CPS effect Finnie, 1981a).…”