Comparative Study on Dry Sliding Wear Behaviour of TiAlN, ZrAlN and ZrN/Al<sub>2</sub>O<sub>3</sub> Hard Coatings on ZA Alloys

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Comparative Study on Dry Sliding Wear Behaviour of TiAlN, ZrAlN and ZrN/Al₂O₃ Hard Coatings on ZA Alloys

Harish, B. / Prakash, K. R. / Suresh, R.

The objective of the paper mainly discusses on effects of coating each one of the below materials namely TiAlN, ZrAlN and ZrN + Al₂O₃ on ZA-27 alloy specimens to understand wear resistance characteristics of such coated composite by cathodic arc coating techniques, also investigation was made on their composition, structure, hardness and wear behaviour at constant coating thickness using profilometer, EDX, SEM and pin on disc, respectively, at room temperature. The hardness of the ZrN + Al₂O_3, TiAlN and ZrAlN are 29.06 GPa, 24.49 GPa and 22.06 GPa, respectively, and the microstructure reveals that ZrN + Al₂O₃ exhibited outstanding properties compared to other two because of columnar structure, dense grain size and multilayer coatings. Also, ZrN + Al₂O₃ exhibited superior wear resistance than TiAlN and ZrAlN due to the Al₂O₃ layer present on the upper layer of ZrN which prevents the effect of oxidation and reduces friction between tool and work piece.

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Title :

Comparative Study on Dry Sliding Wear Behaviour of TiAlN, ZrAlN and ZrN/Al₂O₃ Hard Coatings on ZA Alloys

Additional title:

Lect.Notes Mechanical Engineering

Contributors:

Narasimham, G. S. V. L. (editor) / Babu, A. Veeresh (editor) / Reddy, S. Sreenatha (editor) / Dhanasekaran, Rajagopal (editor) / Harish, B. (author) / Prakash, K. R. (author) / Suresh, R. (author)

Published in:

Innovations in Mechanical Engineering ; Chapter : 39 ; 533-543

Lecture Notes in Mechanical Engineering

Publication date :

2022-03-02

Size :

11 pages

ISBN :

978-981-16-7282-8 , 978-981-16-7281-1

ISSN :

2195-4364 , 2195-4356

DOI :