A Study of Laser Cladding on the NiCr/Cr3C2-WS2-CaF2 Coating

2013 ◽  
Vol 747-748 ◽  
pp. 146-151 ◽  
Author(s):  
Shu Fa Chen ◽  
Cheng Long Feng ◽  
Jin Yang ◽  
Jin Song Chen
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Composite Coating ◽  
Laser Cladding ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Stainless Steel Substrate ◽  
Wear Behavior ◽  
Steel Substrate ◽  
Wear Process

NiCr/Cr3C2-WS2-CaF2 mixed powders were prepared on 1Cr18Ni9Ti stainless steel substrate to fabricate high-temperature self-lubrication wear resistant composite coating by laser cladding. The microstructure of the coating was examined by means of XRD, SEM and EDS. The high-temperature dry sliding friction and wear behavior of the composite coating were evaluated by using a ball-on-block wear tester at room temperature, 300 and 600 , respectively. The results showed that the composite coating had a unique microstructure consisting of γ-(Ni,Fe) solid solution matrix, Cr7C3/WC reinforcement and CrS/WS2 lubricant particles. The hardness of NiCr/Cr3C2-WS2-CaF2 coating by laser cladding was lower than NiCr/Cr3C2 coating, but higher than stainless steel substrate significantly. It was because of the addition of solid lubricant. In the wear process, elevated temperature was helpful to form a lubricating transfer film. As a result, the NiCr/Cr3C2-WS2-CaF2 coating exhibited a notable anti-friction and wear resistance at 300 and 600 .

Wear behavior of laser cladded WC-FeAl coating on 321 stainless steel substrate

2020 ◽  
Vol 32 (4) ◽  
pp. 042015
Author(s):  
Alireza Mostajeran ◽  
Reza Shoja-Razavi ◽  
Morteza Hadi ◽  
Mohammad Erfanmanesh ◽  
Hadi Karimi
Keyword(s):  
Stainless Steel ◽  
Stainless Steel Substrate ◽  
Wear Behavior ◽  
Steel Substrate

Friction and Wear Behavior of Laser Cladding NiAl/hBN Self-Lubricating Composite Coating

2009 ◽  
pp. 442-442 ◽  
Author(s):  
Shitang Zhang ◽  
Jiansong Zhou ◽  
Baogang Guo ◽  
Huidi Zhou ◽  
Yuping Pu ◽  
...  
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Friction And Wear Behavior

Tribology of Ge thin films on stainless steel

2017 ◽  
Vol 69 (2) ◽  
pp. 182-189
Author(s):  
Lubomir Krabac ◽  
Vladimir Pejaković ◽  
Vladislav Drinek ◽  
Nicole Dörr ◽  
Ewald Badisch
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Stainless Steel ◽  
Design Methodology ◽  
Friction And Wear ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Chemical Vapor Deposition Method ◽  
Content Type ◽  
Sliding Distance

Purpose The purpose of this paper is to study the friction and wear behavior of germanium (Ge) thin films deposited by low-pressure chemical vapor deposition method on a chromium (Cr)-nickel (Ni) stainless steel substrate after being exposed to relatively mild sliding conditions (low loads and sliding distances). Design/methodology/approach Wear and friction experiments were conducted with a 100Cr6 steel ball sliding against flat Ge thin-film-coated stainless steel sheets (ball-on-flat microtribometer, no lubricant, normal loads of 50-100 mN, initial Hertzian contact pressures of 385-485 MPa, total sliding distance up to 200 mm and room temperature). Findings Scanning electron microscopy results revealed that prepared Ge thin films consisted of two different morphologies: curved nanowires and cone-shaped nano-/microdroplets. Regarding friction and wear characteristics of the investigated samples, the substrates coated with Ge thin films did not affect the coefficient of friction significantly by load. The wear of the base material (Cr-Ni stainless steel) was not observed under the mentioned experimental conditions (see the “Design/methodology/approach” section); however, with increased sliding distance and/or applied load, a rupture of the Ge film and an exposure of the stainless steel substrate to the 100Cr6 ball can be expected. Furthermore, the observations suggest that the smearing of Ge nano- and microstructures, plastically deformed during tribotesting, over the surface exposed to the sliding contact is the dominant tribological process. Originality/value For the first time, the tribological interaction between Ge thin film and steel surface was investigated under dry sliding conditions using a ball-on-flat microtribometer, and the obtained results provide a useful base for the further research on tribology of Ge-based thin films.

Evaluation of Two Different Energy Inputs for Deposition of Stellite 6 by Laser Cladding on a Martensitic Stainless Steel Substrate

2015 ◽  
Vol 1119 ◽  
pp. 628-632
Author(s):  
Alain Kusmoko ◽  
Druce Dunne ◽  
Hui Jun Li
Keyword(s):  
Stainless Steel ◽  
Laser Cladding ◽  
Martensitic Stainless Steel ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Testing Machine ◽  
Wear Testing ◽  
Chemical Compositions ◽  
Stellite 6 ◽  
Energy Inputs

Stellite 6 was deposited by laser cladding on a martensitic stainless steel substrate with energy inputs of 1 kW (MSS-1) and 1.8 kW (MSS-1.8). The chemical compositions and microstructures of these coatings were characterized by atomic absorption spectroscopy, optical microscopy and scanning electron microscopy. The microhardness of the coatings was measured and the wear mechanism of the coatings was assessed using a pin-on-plate (reciprocating) wear testing machine. The results showed less cracking and pore development for Stellite 6 coatings applied to the MSS steel substrate with the lower heat input (MSS-1). Further, the Stellite coating for MSS-1 was significantly harder than that obtained for MSS-1.8. The wear test results indicated that the weight loss for MSS-1 was much lower than for MSS-1.8. It is concluded that the lower hardness of the coating for MSS-1.8, markedly reduced the wear resistance of the Stellite 6 coating.

scholarly journals Tribology and high temperature friction wear behavior of MCrAlY laser cladding coatings on stainless steel

Wear ◽  
2015 ◽  
Vol 330-331 ◽  
pp. 280-287 ◽  
Author(s):  
Juan Pereira ◽  
Jenny Zambrano ◽  
Marie Licausi ◽  
María Tobar ◽  
Vicente Amigó
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Laser Cladding ◽  
Wear Behavior

scholarly journals Effects of WC Particle Types on the Microstructures and Properties of WC-Reinforced Ni60 Composite Coatings Produced by Laser Cladding

Metals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 583 ◽  
Author(s):  
Pengxian Zhang ◽  
Yibin Pang ◽  
Mingwei Yu
Keyword(s):  
Stainless Steel ◽  
Uniform Distribution ◽  
Laser Cladding ◽  
Steel Surface ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Composite Coatings ◽  
304 Stainless Steel ◽  
Stainless Steel Surface ◽  
Different Types

WC-reinforced Ni60 composite coatings with different types of WC particles were prepared on 304 stainless steel surface by laser cladding. The influences of spherical WC, shaped WC, and flocculent WC on the microstructures and properties of composite coatings were investigated. The results showed that three types of WC particles distribute differently in the cladding coatings, with spherical WC particles stacking at the bottom, shaped WC aggregating at middle and lower parts, with flocculent WC particles dispersing homogeneously. The hardnesses, wear resistances, corrosion resistances, and thermal shock resistances of the coatings are significantly improved compared with the stainless steel substrate, regardless of the type of WC that is added, and especially with regard to the microhardness of the cladding coating; the addition of spherical or shaped WC particles can be up to 2000 HV0.05 in some areas. Flocculent WC, shaped WC, and spherical WC demonstrate large to small improvements in that order. From the results mentioned above, the addition of flocculent WC can produce a cladding coating with a uniform distribution of WC that is of higher quality compared with those from spherical WC and shaped WC.

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