2013
DOI: 10.2320/matertrans.m2012237
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Tribology Property of Laser Cladding Crack Free Ni/WC Composite Coating

Abstract: In order to improve wear resistance, the Ni/WC composite coating was prepared on NAK80 mold steel surface by laser cladding technology. Phase and microstructure had been investigated by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS) and X-ray diffraction (XRD). Dry sliding tribological properties at room temperature of the coating had been researched by ball-on-disc wear tests. Results indicated that phase constituents of the coating were mainly composed of WC, W 2 C, Cr 23 C 6 , NiCr… Show more

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Cited by 19 publications
(10 citation statements)
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“…Several methods for experimental testing of tribology and wear behavior of potential roll and cladding materials have been used by researchers. The majority of these methods can be roughly classified as 1) pin‐on‐disc or ball‐on‐disc tests, 2) ring‐on‐bock tests with different setups, 3) block‐on‐disc tests with or without addition of abrasive particles, and 4) disc‐on‐disc or roll‐on‐roll tests with two or even three discs or rolls, respectively. Among those test methods, in particular, the roll‐on‐roll tests are suitable to simulate the combined effects of relative motion (slip effects) and high contact pressure between the rolls of the rolling mill and the metal strip.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Several methods for experimental testing of tribology and wear behavior of potential roll and cladding materials have been used by researchers. The majority of these methods can be roughly classified as 1) pin‐on‐disc or ball‐on‐disc tests, 2) ring‐on‐bock tests with different setups, 3) block‐on‐disc tests with or without addition of abrasive particles, and 4) disc‐on‐disc or roll‐on‐roll tests with two or even three discs or rolls, respectively. Among those test methods, in particular, the roll‐on‐roll tests are suitable to simulate the combined effects of relative motion (slip effects) and high contact pressure between the rolls of the rolling mill and the metal strip.…”
Section: Methodsmentioning
confidence: 99%
“…MMC claddings typically consist of crushed or spherical tungsten carbide particles embedded into an iron‐, cobalt‐, or nickel‐based matrix. The microstructure and the wear behavior of these claddings are generally well studied at room temperature, but only a few investigations focus on their particular wear behavior at elevated temperatures . At room temperature, abrasive wear tends to decrease with increasing hardness of the MMC cladding, i.e., with increasing content or size of the hard particles inside the matrix, respectively.…”
Section: Introductionmentioning
confidence: 99%
“…The width and depth of wear scar of each sample was measured using Axio CSM true color confocal microscope. According to Cheng et al 3) , the wear volume, V w and wear rate, K can be calculated from the wear track dimensions, such that…”
Section: Methodsmentioning
confidence: 99%
“…Laser cladding technique can be employed to repair the worn surface of a mould locally 2) . During this process, high-performance coating material is cladded onto the mould surface, where the coating materials possess excellent properties: low dilution rate, homogenized and dense microstructure, good bond between the cladding layer and the substrate, and low heat affect [3][4][5] . This technique can repair mould parts to original dimensions, and improve the wear resistance, corrosion resistance, heat resistance, fatigue resistance of mould surfaces 6,7) .…”
Section: Introductionmentioning
confidence: 99%
“…Laser-deposited metal matrix composites (MMCs) like Ni60WC are characterised by high wear resistance and minimal cracking when applied to steel substrates: This is due to an elastic matrix reinforced with fused tungsten carbides [7,8]. Depending on the rate of heating and cooling, mono-tungsten carbide (WC) and di-tungsten carbide (W 2 C), characterized by a high level of hardness (16)(17)(18)(19)(20)(21)(22), may be present in the final structure [9].…”
Section: Introductionmentioning
confidence: 99%