Structure and properties of plasma carbonitrided Ti–6Al–2Cr–2Mo alloy

The paper presents the results of glow discharge assisted carbonitriding of two phase titanium alloy Ti–6Al–2Cr–2Mo carried out in the N2 + CH4 atmosphere. The carbonitrided diffusion layer is thus produced of the Ti(C,N) + Ti2N + αTi(N) type with a hardness of 23 GPa. The outer zone of the layer contains the Ti(C,N) phase. This layer slightly increases the corrosion resistance and the fatigue strength limit of the titanium alloy, and essentially increases its frictional wear resistance.