Sliding wear characteristics of molybdenum containing Stellite 12 coating at elevated temperatures

Amir Motallebzadeh, Erdem Atar, Huseyin Cimenoglu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

The addition of 10 wt% Mo encouraged a eutectic reaction to form Co6Mo6C complex carbide and Co3Mo intermetallic in addition to Cr23C6 while causing solid solution hardening of the Co-rich dendritic matrix in the microstructure of the PTA deposited Stellite 12 coating. The addition of molybdenum not only imposed a higher hardness but also enhanced wear resistance. Under oxidation dominated wear conditions (500 and 700 °C), the addition of molybdenum provided a remarkable increase in wear resistance in comparison to the lower temperatures (RT and 300 °C), due to the development of a protective oxide film on the worn surface.

Original languageEnglish
Pages (from-to)40-47
Number of pages8
JournalTribology International
Volume91
DOIs
Publication statusPublished - 11 Jul 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.

Funding

The authors are grateful for financial support from Technical Research Council of Turkey (under the Grant number of 212M035 ) and Istanbul Technical University (under the Grant number of 37062 ). Also the authors would like to express their thanks to Mr. Ahmet Nazim for carrying out SEM investigations, Ms. Leila Haghighi Poudeh for her help in Raman analyses and SENMAK Co for the technical support.

FundersFunder number
Technical Research Council of Turkey212M035
Istanbul Teknik Üniversitesi37062

    Keywords

    • High temperature
    • Raman
    • Sliding
    • Wear-resistant

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