کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5017574 1466715 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and wear resistance of laser-cladded Ni-based composite coatings on downhole tools
ترجمه فارسی عنوان
ریزساختار و مقاومت در برابر سایش پوششهای کامپوزیتی مبتنی بر لیزر پوشش داده شده بر روی ابزارهای خنک کننده
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
Single- and graded-composite coatings of Ni35+tungsten carbide (WC), Ni35+original sialon powders (OSP), and Ni35+WC+OSP were prepared by laser cladding on 45 steel substrates, and their microstructures, hardness, and wear resistance were compared among different coatings. The high content of hard-phase WC, CrFe7C0.45, Cr4Ni15W, and AlNi3 could effectively improve the hardness and wear resistance. The hardness and wear resistance of the graded coatings were better than that of the single-composite coatings except the Ni35+WC+OSP composite coatings. The types of variation in the hardness of different coatings, such as the step increase and linear increase, were characterized by the distribution of hard phase. The maximum microhardness of the coatings reached 1118 HV0.5, which was approximately 5.8 times that of the substrate. The wear loss of the Ni35+WC graded coating showed much greater decrease, nearly double that of the substrate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 252, February 2018, Pages 217-224
نویسندگان
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