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In the present paper, chromium white cast irons were prepared by the unidirectional solidification. The carbide sample was extracted for the corrosion and wear test. The inter-phase corrosion mechanism and the electrochemical behavior of chromium white cast irons in corrosion medium were discussed from the viewpoints of electrochemistry and erosion wear. The inter-phase corrosion rates between carbide...
Tribological tests were carried out on a commercial Al 2 O 3 ceramic with varied surface finishing by grinding and polishing. The effect of surface roughness on friction and wear was studied in reciprocating sliding in 2,2,4-trimethylpentane (isooctane) as well as in distilled water and air as reference. Surface roughness was characterized by using scanning electron microscopy (SEM)...
Plastic deformation wear and cutting wear are two of the major types of wear that occur in three-body abrasion of materials. The authors' previous work has shown that cutting wear has a strong influence on the relationship between the wear loss and the hardness of materials. Often the curve of the wear loss relative to material hardness appears S-shaped because of the dependence on cutting wear. However,...
The tribological behavior of ceramic Al 2 O 3 coupled with gray cast iron (PHT) with different lubricants was investigated using a ring-on-block wear tester. In the wear test, air, distilled water, emulsion and oil were used as lubricants respectively in order to check the lubricating effectiveness of lubricants and the friction mechanism of solid graphite in the cast iron. Wear testing...
Using distilled water and air lubricants, wear tests of ceramic-cast iron pairs were carried out on a M-200 type ring-block wear tester. For comparison, ceramic-carbon steel pairs were also tested under the same conditions. The worn surfaces of specimens were observed under scanning electron microscope (SEM) and optical microscope. Furthermore, the tribofilms were analyzed by using Auger electron...
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