Journal ArticleDOI
Laser deposition of carbide-reinforced coatings
TLDR
In this paper, the results of laser cladding experimental results using families of carbides (tungsten and titanium) mixed with metallic alloys are reported as substrates, low alloy construction steel (AISI 4140) (austenitic stainless steel) samples have been utilized, depending on the particular carbide reinforcement application.Abstract:
CO2 laser cladding with blown powder presents many advantages: fusion bonding with the substrate with low dilution, metallurgical continuity in the metallic matrix, high solidification rates, ease of automation, and reduced environmental contamination In the present paper, laser cladding experimental results using families of carbides (tungsten and titanium) mixed with metallic alloys are reported As substrates, low alloy construction steel (AISI 4140) (austenitic stainless steel) samples have been utilized, depending on the particular carbide reinforcement application The coating layers obtained have been characterized by metallurgical examination They show low dilution, absence of cracks, and high abrasion resistance The WC samples, obtained with different carbide sizes and percentages, have been characterized with dry sand rubber wheel abrasion tests and the specimen behaviour has been compared with the behaviour of materials used for similar applications The abrasion resistance proved to be better than that of other widely used hardfacing materials and the powder morphology have a non-negligible influence on the tribological propertiesread more
Citations
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Journal ArticleDOI
Modifying effect of rare earth La2O3 on the Fe-C-Cr-Si-B laser clad coatings
Journal ArticleDOI
MICROSTRUCTURE AND SLIDING WEAR PROPERTIES OF LASER CLAD TiN REINFORCED COMPOSITE COATING
TL;DR: The microstructure and sliding wear properties of a laser clad TiN composite coating on steel 1045 have been investigated using scanning electron microscopy, electron probe microanalysis, X -ray diffraction, and energy dispersive X-ray analysis and a pin-ring dry sliding wear test machine.
Journal ArticleDOI
Microstructural characterisation of laser clad coating of nickel based alloy with dissolved SiCp
TL;DR: A laser surface cladding technique was used to form an Ni-Cr-B-Si-C alloy coating doped with 30 vol.-%SiCp on an AISI 1045 steel substrate as mentioned in this paper.
Journal ArticleDOI
Study of Nickel-Based Composite Coatings on H13 Steel Surface by Laser
Lei Zhao,Rong Lu Sun,Yi Wen Lei +2 more
TL;DR: In this paper, NiCrBSi+Ti+C and NiCrbsi+C composite coatings were fabricated on H13 steel substrate by laser claddings to improve its wear resistance.
References
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Journal ArticleDOI
Abrasive wear of multiphase materials
TL;DR: In this paper, the effects of size and volume fraction of a reinforcing phase on the wear behavior of multiphase materials were investigated using pin-on-paper abrasion tests.
Journal ArticleDOI
General aspects for tribological applications of hard particle coatings
TL;DR: Hard coatings, consisting of WC, TiC or Cr3C2 particles with a nickel or cobalt matrix were compared with conventional wear-resistant materials like hardened steel 100 Cr6, Ferro TiC P143, WC-Co hard metal and a widely used thermal spray layer NiCrBSi.
Proceedings ArticleDOI
Surface Treating By Laser Melt/Particle Injection
TL;DR: In this paper, an in situ composite surface layer of particulate material in a matrix made up of the parent metal is formed by the laser melt/particle injection process, which makes the injected surface layer hard and wear resistant.
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