Results 1 to 10 of about 796 (182)

Cavitation erosion characteristics and mechanisms of hydraulic turbine substrates and their coatings [PDF]

Ultrasonics Sonochemistry
This study systematically investigated the cavitation erosion resistance and failure mechanisms of 06Cr13Ni5Mo(S135) stainless steel and four coatings (HVOF-WC10Co4Cr, HVOF-Cr3C237WC18, HVAF-WC10Co4Cr, Laser-Clad(LC)) using ultrasonic cavitation testing.
Pengbo Wu, Shuaihui Sun, Pengcheng Guo, Haipeng Nan, Tao Wang, Xuezheng Zheng   +5 more
doaj   +2 more sources

Designs and preparation of advanced HVOF-PVD duplex coating by combination of HVOF and arc ion plating [PDF]

Surface and Coatings Technology, 2016
Abstract Advanced HVOF-PVD duplex coatings were produced on the medium carbon steel by combinations of High Velocity Oxygen-Fuel (HVOF) and arc ion plating. The microstructures and mechanical properties were investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) in association with mechanical property measurement.
Xianna Meng, Wanglin Chen
exaly   +2 more sources

Oxidation in HVOF-Sprayed Steel [PDF]

International Thermal Spray Conference, 1997
Abstract It is widely held that most of the oxidation in thermally sprayed coatings occurs on the surface of the droplet after it has flattened. The evidence in this paper suggests that, for the conditions studied here, oxidation of the top surface of flattened droplets is not the dominant oxidation mechanism. In this study, a mild steel
Smith, M. F., Neiser, R. A., Dykhuizen, R. C.   +2 more
openaire   +1 more source

The microstructure and properties of CoCrAlYSi-hBN coating prepared by HVOF

Journal of Aeronautical Materials, 2020
CoCrAlYSi-hBN coating was fabricated using the high-velocity oxygen fuel (HVOF) process under several processing conditions， and the effects of process parameters, gas flow and spray distance, on the microstructure and properties of the coating were ...
ZHANG Ang, WANG Changliang, WANG Tianying, GAO Junguo, GUO Mengqiu, CUI Yongjing, TIAN Haoliang   +6 more
doaj   +1 more source

Spray Deposition of Mechanically Alloyed F/M ODS Steel Powder [PDF]

Archives of Metallurgy and Materials, 2019
Thermal/cold spray deposition were used for additive manufacture of oxide dispersion strengthened (ODS) steel layers. Mechanically alloyed F/M ODS steel powders (Fe(bal.)-10Cr-1Mo-0.25Ti-0.35Y2O3 in wt.%) were sprayed by a high velocity oxygen fuel (HVOF)
Suk Hoon Kang, Chang-Kyu Rhee, Sanghoon Noh, Tae Kyu Kim   +3 more
doaj   +1 more source

Comparative study between high-velocity oxygen fuel and flame spraying using MCrAlY coats on a 304 stainless steel substrate

Journal of Materials Research and Technology, 2019
High-velocity oxygen fuel (HVOF) and flame spraying (FS) are alternative methods to thermal spraying processes to produce dense high-quality coatings. The aim of this study is to compare the microstructure and mechanical properties for HVOF and FS using ...
Abou Bakr Elshalakany, T.A. Osman, W. Hoziefa, Angel Vicente Escuder, V. Amigó   +4 more
doaj   +1 more source

Deposition mechanisms and characteristics of nano-modified multimodal Cr3C2–NiCr coatings sprayed by HVOF

Reviews on Advanced Materials Science, 2022
Nano-modified multimodal and conventional Cr3C2–NiCr coatings were fabricated by high-velocity oxygen-fuel spraying deposited on CuCrZr substrates. Results showed that individual nano-modified multimodal Cr3C2–NiCr particles were composed of nano (25−180 
Shi Chenxi, Liu Shibin, Irfan, Gong Qinglin, Wang Huan, Hu Ming   +5 more
doaj   +1 more source

HIGH VELOCITY OXY - FUEL COATINGS TRIBOLOGY: A CRITICAL REVIEW [PDF]

Proceedings on Engineering Sciences
High velocity oxy-fuel (HVOF) coating is a widely used thermal spray technique for applying wear-resistant coatings on metallic surfaces. The primary objective of this review is to provide an overview of the tribological properties of HVOF coatings.
Balachandra P Shetty , G J Naveen Sambhram , Shailesh Rao A   +2 more
doaj   +1 more source

بررسی قابلیت پوشش‌دهی SiC توسط فرآیندهای APS و HVOF از طریق روکش کاری نیکل-فسفر بر پودر اولیه [PDF]

نشریه مهندسی متالورژی و مواد
در این تحقیق، از پودر کاربید سیلیسیم (SiC) با اندازه ذرات 30 تا 45 میکرومتر و مورفولوژی نامنظم، جهت پوشش‌دهی در حمام الکترولس نیکل استفاده شد. تاثیر پارامترهای خشن‌سازی سطح ذرات در محلول اسیدی و زمان فرآیند الکترولس بر یکنواختی و ضخامت پوشش Ni-P روی ذرات
پژمان زمانی مقدم, ضیاء والفی, مسعود میرجانی   +2 more
doaj   +1 more source

Study on Composite CoNiCrAlY Coating with Super Fine Al₂O₃ Particles Sprayed by HVOF and APS [PDF]

Cailiao Baohu, 2021
Adding a certain amount of Al2O3 to MCrACY could improve its high temperature wear resistance. For this, CoNiCrAlY and micron Al2O3 powder particles were mixed in proportion and then milled in a sealed ball mill to obtain composite ...
CAO Bin, CHEN Xiong - wei, SUN Xiao - ping
doaj   +1 more source