Dry Sliding Wear Characteristics of Plasma-Nitrocarburized Co – Cr – Mo Alloy


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Abstract

Forged low-carbon alloy Co – 27% Cr – 6% Mo – 0.06% C is studied after 2-h plasma nitrocarburizing in a gaseous mixture of 10% CO2 + 20% N2 + 70% H2 at 400, 500 and 600°C. The surface layer and the core are studied by diffractometric analysis and scanning electron microscopy. The microhardness and the tribological characteristics of the alloy are determined. The effect of the temperature of nitrocarburizing on the wear resistance, surface roughness and friction coefficient of the alloy is considered.

About the authors

Ö. Bayrak

Erzincan University, Department of Mechanical Engineering

Author for correspondence.
Email: obayrak@erzincan.edu.tr
Turkey, Erzincan

H. Kovaci

Ataturk University, Department of Mechanical Engineering

Email: obayrak@erzincan.edu.tr
Turkey, Erzurum

F. Yildiz

Erzurum Technical University, Department of Mechanical Engineering

Email: obayrak@erzincan.edu.tr
Turkey, Erzurum

A. F. Yetim

Erzurum Technical University, Department of Mechanical Engineering

Email: obayrak@erzincan.edu.tr
Turkey, Erzurum

A. Çelik

Ataturk University, Department of Mechanical Engineering

Email: obayrak@erzincan.edu.tr
Turkey, Erzurum

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