Overview of Cr2N And Cr2N/Ag Coatings On Cr-V Ledeburitic Steel: Mechanical Properties and Adhesion

Bílek Pavel (), Jurči Peter (), Hudáková Mária (), Čaplovič Ľubomír () and Pašák Matej
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Pašák Matej: Department of Materials, Faculty of Materials Science and Technology of the Slovak Technical University, Trnava, Paulínská 16, 917 24 Trnava, Slovak Republic

Research Papers Faculty of Materials Science and Technology Slovak University of Technology, 2014, vol. 21, issue 341, 6

Abstract: Samples made from Vanadis 6 PM ledeburitic tool steel were surface machined, ground and mirror polished. Prior the deposition, they were heat treated to a hardness of 60 HRC. Cr2N- and Cr2N/Ag-coatings were deposited by magnetron sputtering technique, using pure Cr and Ag targets, in a composite low pressure nitrogen/argon atmosphere and at a temperature of 500 °C. The contents of silver in Cr2N/Ag coatings were established 3, 7, 11 and 15 wt. %. Incorporation of silver in the Cr2N-matrix influence the growth rate, namely from the content of 11 wt. %. The nanohardness and Young´s modulus do not change until the content of 11 wt. % where slightly increased but further increasing of silver led to decreasing these values rapidly. The best adhesion was established for coatings with 3 and 7 wt. % of silver.

Date: 2014
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