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DUAL MODE FRACTURE BASED ON LOADING RATE DURING SLIDING INDENTATION OF Si-C-N HARD COATINGS ON 304SS SUBSTRATES
  • A S Bhattacharyya
A S Bhattacharyya
Department of Metallurgical and Materials Engineering, Central University of Jharkhand, Centre of Excellence in Green and Efficient Energy Technology (CoE GEET, Central University of Jharkhand

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Abstract

Scratch tests were performed on thermal resistant hard Si-C-N coatings deposited on steel (SS) 304, by RF (Radio frequency) magnetron sputtering. The abrasion and wear properties were studied by analyzing the changing failure complexion inside the scratch showing a mixture of ductile and brittle properties The change in loading rate caused noticeable changes in the failure mode. The plasticity was found to have a peripheral domination initially with increase in load but was replaced by brittle failure on increasing the loading rate. The work of adhesion and wear rate were determined.