کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1662906 1008454 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison in microstructure and mechanical properties of nanocomposite CrWN and nanolayered CrN/WN coatings
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Comparison in microstructure and mechanical properties of nanocomposite CrWN and nanolayered CrN/WN coatings
چکیده انگلیسی

Chromium–tungsten nitride (CrWN) and chromium nitride (CrN)/tungsten nitride (WN) multilayer coatings were fabricated by rf magnetron-reactive sputtering technique. The CrWN coating was deposited with dual gun cosputtering apparatus, while the CrN/WN coatings were manufactured by sequential CrN and WN sputtering to exhibit an alternating nanolayered feature. The microstructure of the nanocomposite and nanolayered coatings was evaluated by both scanning and transmission electron microscopy. The bilayer period of the multilayer was controlled ranging from 10 to 24 nm, with the average thickness of single nitride layer ranging from 5 to 12 nm. The nanolayered CrN/WN coatings exhibited a higher hardness of approximately 30 GPa, which was superior to that of the nanocomposite CrWN coating. The nanolayered structure which confined the grains of the nitrides in the nano range was beneficial to the enhancement of the hardness in the nanolayered coating.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 200, Issue 10, 24 February 2006, Pages 3194–3198
نویسندگان
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