首页|Pulsed plasma nitriding of high velocity oxy-fuel sprayed Inconel 625 coatings

Pulsed plasma nitriding of high velocity oxy-fuel sprayed Inconel 625 coatings

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A hardening of high velocity oxy-fuel sprayed Inconel 625 coating systems was performed by pulsed plasma nitriding treatment. After deposition of an Inconel 625 coating, samples were pulsed plasma nitrided at 520℃ for 12 h in a gas ratio of 3:1 N_2 and H_2 under a constant pressure of 2.5 × 10~2 Pa. Pulsed plasma nitriding improved the microhardness of the high velocity oxy-fuel sprayed Inconel 625 coating from 355 to 401 HV_(0.05). The high velocity oxy-fuel-sprayed Inconel 625 coating after pulsed plasma nitriding process showed excellent corrosion resistance as well as a reduction of both the friction coefficient and wear rate during the sliding phase in a 3.5 wt.% NaCl solution against sliding action of Al_2O_3 ball.

CorrosionPulsed plasma nitridingHigh velocity oxy-fuel sprayingInconel 625Tribocorrosion

Harun Mindivan

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Department of Mechanical Engineering, Bilecik Seyh Edebali University

2022

10.1177/13506501211062522

Proceedings of the Institution of Mechanical Engineers

Proceedings of the Institution of Mechanical Engineers

ISSN：1350-6501
年,卷(期)：2022.236(10)
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