کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1676721 1009007 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Production and characterization of duplex coatings (HVOF and PVD) on Ti–6Al–4V substrate
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Production and characterization of duplex coatings (HVOF and PVD) on Ti–6Al–4V substrate
چکیده انگلیسی

Present paper deals with modelling, production and characterization of HVOF PVD (WC–Co and TiN or CrN, respectively) duplex coatings deposited on Ti–6Al–4V substrate for application in automotive industry. As a preliminary analysis, an analytical study of the contact stress distribution under spherical indenter in both coated and uncoated systems, and a finite element evaluation of residual stresses were performed: results showed that the presence of an interlayer with intermediate hardness and stiffness (such as the WC–Co coating) plays a fundamental role in the improvement of the load carrying capacity. Starting from the results of simulations, morphological and compositional characterization of the coatings were performed using SEM and AFM techniques. Mechanical properties were investigated by micro indentation techniques and composite hardness modelling; toughness of the system was qualitatively analysed by Rockwell C indentation. Wear rate of the coatings was measured by an implemented rotating wheel method. Results show higher superficial composite hardness, toughness, adhesion and lower wear rate, in comparison with the simple monolayer system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 515, Issue 1, 25 September 2006, Pages 186–194
نویسندگان
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