Indian Journal of Engineering & Materials Sciences

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Effect of rare earth on microstructure and wear behaviour of Ni based microwave clad


Affiliations
1 Department of Mechanical Engineering, School of Engineering, Gautam Buddha University, Uttar Pradesh 201308, India
2 Delhi Institute of Tool Engineering, Govt. of NCT Delhi, Okhla Ph.- II, Delhi-110020,, India

In the present investigation microwave energy has been utilized to develop wear resistant Ni-based clad without Nd2O3 (unmodified coating) and with addition of Nd2O3 (modified coatings) in varying wt. % of 1-3. The clads have been developed using domestic microwave oven at frequency of 2.45 GHz and power 900 W for duration of 360 s. The unmodified and modified clads have been characterized in terms of microstructure, XRD, microhardness and two body abrasive wear. The average thickness of developed clads has been measured as 1.0 mm approximately. A two body abrasive wear behaviour of unmodified and modified coatings at sliding speed of 36 m/min & 72 m/min with abrasive grit size of 220 & 600 has been investigated. The results revealed a better abrasive wear resistance at lower sliding speed and fine grit size. Further, the best results of microstructure, formation of hard phases, improved microhardness and wear resistance have been shown by the samples having coating composition as 3 wt. % of Nd2O3.
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  • Effect of rare earth on microstructure and wear behaviour of Ni based microwave clad

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Authors

Kanwarjeet Singh
Department of Mechanical Engineering, School of Engineering, Gautam Buddha University, Uttar Pradesh 201308, India
Kanwarjeet Singh
Delhi Institute of Tool Engineering, Govt. of NCT Delhi, Okhla Ph.- II, Delhi-110020,, India
Satpal Sharma
Department of Mechanical Engineering, School of Engineering, Gautam Buddha University, Uttar Pradesh 201308, India

Abstract


In the present investigation microwave energy has been utilized to develop wear resistant Ni-based clad without Nd2O3 (unmodified coating) and with addition of Nd2O3 (modified coatings) in varying wt. % of 1-3. The clads have been developed using domestic microwave oven at frequency of 2.45 GHz and power 900 W for duration of 360 s. The unmodified and modified clads have been characterized in terms of microstructure, XRD, microhardness and two body abrasive wear. The average thickness of developed clads has been measured as 1.0 mm approximately. A two body abrasive wear behaviour of unmodified and modified coatings at sliding speed of 36 m/min & 72 m/min with abrasive grit size of 220 & 600 has been investigated. The results revealed a better abrasive wear resistance at lower sliding speed and fine grit size. Further, the best results of microstructure, formation of hard phases, improved microhardness and wear resistance have been shown by the samples having coating composition as 3 wt. % of Nd2O3.