Figure 3.

SEM top-view and etched cross-sectional images of Ti-6Al-4V alloys. Nitriding at 850°C for (a) 1, (b) 6, and (c) 12 h. Ti-N, compound layer; Ti(N), diffusion zone.

Lee et al. Nanoscale Research Letters 2012 7:21   doi:10.1186/1556-276X-7-21
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