کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1669737 | 1008888 | 2011 | 7 صفحه PDF | دانلود رایگان |
The influence of oxygen in the system Nb–O–N on properties like thermal, mechanical, corrosion and degradation behaviour was studied with respect to the O/N ratio in the films prepared by reactive magnetron sputtering. With increasing O/N ratio the hardness, the Young's Modulus and the residual stress strongly decreased. Furthermore the friction coefficient decreased in pin-on-disk tests against a 100Cr6 ball and was lowest for NbON coatings with medium oxygen content. The thermal stability in vacuum was excellent for the coatings up to 800 °C except for coatings with an O/N ratio of ≥ 12.8. These high oxygen-containing coatings crystallised at about 600 °C. The corrosion resistance of the Nb-based coatings in NaCl-containing media strongly improved with increasing O/N ratio, presumably due to the amorphous structure of the oxygen-containing coatings.
Journal: Thin Solid Films - Volume 519, Issue 8, 1 February 2011, Pages 2457–2463