کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1660420 | 1008401 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Influence of phase transition on the tribological performance of arc-evaporated AlCrVN hard coatings Influence of phase transition on the tribological performance of arc-evaporated AlCrVN hard coatings](/preview/png/1660420.png)
V-alloyed AlCrN hard coatings were synthesised by reactive arc-evaporation in an industrial-sized deposition system at bias voltages ranging from − 40 to − 150 V. X-ray diffraction analysis has shown that higher energetic growth conditions stabilise the desired metastable face-centered cubic (fcc) crystal structure of Al0.70Cr0.05V0.25N even at very high Al/Cr ratios resulting in hardness values comparable to Al0.70Cr0.30N. Ball-on-disc tests were used to assess the friction at 700 °C where Al0.70Cr0.05V0.25N coatings revealed a generally lower coefficient of friction due to the formation of a tribolayer containing the lubricious oxide V2O5 as evidenced by Raman spectroscopy. The single-phase fcc-Al0.70Cr0.05V0.25N coating appears to be more oxidation resistant leading to a reduced formation of V2O5 and, hence, an increase in friction. The cutting performance was evaluated by conducting side milling tests under dry conditions, where Al0.70Cr0.05V0.25N coatings showed a competitive performance regardless of the growth conditions.
Journal: Surface and Coatings Technology - Volume 203, Issue 8, 15 January 2009, Pages 1101–1105