PROPERTIES OF CARBIDE LAYERS PRODUCED BY MEANS OF THE POWDER METHOD AT LOW PRESSURE
Journal Title: Tribologia - Year 2017, Vol 272, Issue 2
Abstract
The paper presents the results of examinations of materials and tribological properties of chromized carbide layers produced on tool steel by means the powder method, modified by the use of low pressure during the process, for the avoidance of the oxidation of the batch. Investigations of the structure of the layers, the topography of the surface of chromized steel samples, their hardness, Young′s modulus, layers adhesion to steel core and tribological properties were conducted. It was proved that the structure and proprieties of chromized carbide layers produced by means of both methods are similar. However, layers produced with the novel vacuum method have greater thicknesses than layers received with the powder method, at the same process parameters (the time and the temperature). This means that, with the novel vacuum method, one could produce layers at lower temperatures than is possible by means of the traditional pack powder method, which has an essential meaning from the point of view of mechanical proprieties of the steel core.
Authors and Affiliations
Bogdan BOGDAŃSKI, Ewa KASPRZYCKA, Joanna KACPRZYŃSKA-GOŁACKA
Keywords
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