Effect of Magnetic-Abrasive Treatment on Wear Resistance of Hard Alloy Inserts with Diffusion Coatings Based on TiC
Author: Stepanova I.V.1
Source: Powder Metallurgy and Metal Ceramics, Volume 41, Numbers 11-12, November 2002 , pp. 575-580(6)
Publisher: Springer
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Abstract:
The mechanism and effect of magnetic-abrasive treatment (MAT) on the wear resistance of WC — 8 Co hard alloy inserts have been studied. MAT was carried out on hard alloy inserts before and after coating deposition. The results of local x-ray and electron microscopic analyses are discussed. It has been established that a TiC coating deposited by CVD after MAT contains iron inclusions. The transition layer (coating-hard alloy base) is narrower as compared with the literature data and contains more iron than the coating and base. The mechanism of the MAT effect on the wear resistance of inserts with diffusion coatings is proposed. The effect of MAT of insert coatings on their wear resistance is discussed as well. The highest level of strengthening has been achieved by treatment using the following scheme: magnetic-abrasive treatment + chemical vapor deposition + magnetic abrasive treatment (MAT + CVD + MAT).
Keywords: magnetic-abrasive treatment; magnetic-abrasive powder; hard alloy; insert; cutting edge; surface strengthening; TiC coating; wear resistance
Language: English
Document Type: Research article
Affiliations: 1: Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, ul. Krzhizhanovskogo 3, Kiev, Ukraine 03142 uvarova@materials.kiev.ua
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