Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
616892 | Wear | 2016 | 19 Pages |
Abstract
Sliding wear at room temperature against alumina involves shallower abrasive grooving, small-scale delamination and carbide pull-outs, and it is controlled by intra-lamellar cohesion. The coatings obtained from the fine feedstock powder exhibit the lowest wear rates (â5x10â6 mm3/(Nm)). At 400 °C, abrasive grooving dominates the sliding wear behaviour; wear rates increase by one order of magnitude but friction coefficients decrease from â0.7 to â0.5. The thermal expansion coefficient of the coatings (11.08x10â6 °Câ1 in the 30-400 °C range) is sufficiently close to that of the steel substrate (14.23x10â6 °Câ1) to avoid macro-cracking.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
G. Bolelli, L.-M. Berger, T. Börner, H. Koivuluoto, V. Matikainen, L. Lusvarghi, C. Lyphout, N. Markocsan, P. Nylén, P. Sassatelli, R. Trache, P. Vuoristo,