Results 11 to 20 of about 3,872 (220)

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

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

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

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

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

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

The Effect of SiC in NiCrBSi-SiC Composite Coating on the Microstructure, Hardness, and Oxidation Resistance

Rekayasa Mesin, 2022
Many industrial parts degrade, which reduces plant reliability. Waterwall tube is part of the circulating fluidized bed (CFB) boiler that often degrades caused by the bed materials’ erosion.
Suwarno Suwarno, Dhio Ndaru Nugroho, Fajar Yudanto, Budi Prawara   +3 more
doaj   +1 more source

Surface modification of HVOF thermal sprayed WC–CoCr coatings by laser treatment [PDF]

, 2010
In this work the affects of laser characteristics on microstructure and microhardness of high velocity oxygen fuel sprayed (HVOF) WC–CoCr coatings were investigated.
A. Forn, Chikarakara, Evans, E. Chikarakara, M. Punset, Brabazon, Dermot, Picas, J.A., Aqida, S., Brabazon, D., S. Naher, Forn Alonso, Antonio, Naher, Sumsun, Punset Fuste, Miquel, D. Brabazon, S. Aqida, Punset, M., Forn, A., Chikarakara, E., Naher, S., Aqida, S.N., Picas Barrachina, Josep Anton, J. A. Picas   +20 more
core   +1 more source

Investigation of the Microstructure and Selected Properties of Laser Treatment of HVOF Thermal Sprayed Coatings onto Magnesium Alloy Substrate [PDF]

Archives of Metallurgy and Materials
This study aimed to investigate and compare the effect of three different scanning rate laser beam heat treatments on WC-CrC-Ni coatings to identify if this method would increase the properties of coatings deposited by HVOF onto magnesium alloy substrate.
E. Jonda, M. Dziekońska, M. Sroka, W. Pakieła, T. Jung   +4 more
doaj   +1 more source

Study of in-flight and impact dynamics of non-spherical particles from HVOF guns [PDF]

, 2009
High velocity oxygen fuel thermal spray has been widely used to deposit hard composite materials such as WC-Co powders for wear-resistant applications. Unlike gas atomized spherical powders, WC-CO powders form a more complex geometry.
Gu, Sai, S. Gu, Kamnis, S., S. Kamnis
core   +1 more source