Title

Surface modification of a Ti2AlC soft ceramic by plasma nitriding treatment

RIS ID

104127

Publication Details

Li, S., Hu, S., Hee, A. & Zhao, Y. (2015). Surface modification of a Ti2AlC soft ceramic by plasma nitriding treatment. Surface and Coatings Technology, 281 164-168.

Abstract

Plasma nitriding treatment was used to improve the surface hardness of a Ti2AlC soft ceramic due to its relatively low hardness of ~3GPa. A continuous coating was formed by plasma nitriding Ti2AlC at 800°C for 4h in a mixture of 75vol.% N2 and 25vol.% H2 gas atmosphere. The surface layer is about 6μm in thickness and composed of TiN with a small amount of AlN. The hardness and the adhesion of the coating to the substrate were evaluated with Vickers hardness and scratch tests. The results showed that a strong coherent coating was formed and surface hardness was improved. The plasma nitriding treatment is a promising technique to improve the surface properties of Ti2AlC at relatively low temperatures.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.surfcoat.2015.09.059