Influence of tungsten carbide particle size and distribution on the wear resistance of laser clad WC/Ni coatings

Wear ◽  
2005 ◽  
Vol 258 (1-4) ◽  
pp. 194-202 ◽  
Author(s):  
K. Van Acker ◽  
D. Vanhoyweghen ◽  
R. Persoons ◽  
J. Vangrunderbeek
Keyword(s):  
Particle Size ◽  
Wear Resistance ◽  
Tungsten Carbide ◽  
Carbide Particle

Microstructures and Properties of Tungsten Carbide Particle-Reinforced Composites Fabricated by Overlaying Welding with Flux-Cored Wire

2011 ◽  
Vol 228-229 ◽  
pp. 548-551
Author(s):  
Lian Jie Li ◽  
Le Dai
Keyword(s):  
Wear Resistance ◽  
Tungsten Carbide ◽  
Carbide Particle ◽  
Reinforced Composites ◽  
Small Particles ◽  
Cored Wire ◽  
Steel Microstructure ◽  
Surface Iron ◽  
The Matrix ◽  
Surface Rigidity

The wire was made by Tungsten Carbide(WC) particles as core. MIG welding was used to surface iron-based WC wearable composite coating of different size and content of WC particles on mild steel. Microstructure was investigated. Surface rigidity and wear resistance were tested. The results indicate that the small particles are dissolved seriously, which separate out with reticulation. The hardness and wear resistance of the matrix are relative higher. The big particles are dissolved less, tree crystal separates out along particles. The particles are easy to fall off when wearing. So the hardness and wear resistance of the substrate are relative lower. The admixture with 80% big particles and 20% small particles has the best wear resistance, its wear resistance can achieve quintupling of quenching 45 steel. The hardness and wear resistance increase with content of WC increasing.

Influence of Powder Structure on Decarburization and Microstructure of HVOF Sprayed WC-12wt.%Co Coatings

2013 ◽  
Vol 834-836 ◽  
pp. 609-612 ◽  
Author(s):  
Ning Ma ◽  
Zhen Xiong Cheng ◽  
Huan Tao Wu ◽  
Fu Xing Ye
Keyword(s):  
Particle Size ◽  
Tungsten Carbide ◽  
Carbide Particle ◽  
Volume Fraction ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
Spray System ◽  
Hvof Spray ◽  
Steel Substrates ◽  
Sprayed Coatings

In order to examine the influences of tungsten carbide particle size on decarburization behavior and microstructure of HVOF sprayed WC-Co coating, four kinds of agglomerated WC-12wt.%Co powders were deposited on mild steel substrates by using a high velocity oxy-fuel (HVOF) spray system. The phase compositions and microstructure of the feedstock powders and sprayed coatings were investigated by X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM), respectively. The results showed that the decarburization became more serious with the decreasing of tungsten carbide particle size in the starting powder. W phase was detected in the as-sprayed nanocomposite WC-12wt.%Co coating. All the coatings showed very compact microstructure with the hard phases embedded in Co matrix. The microstructure of HVOF sprayed WC-12wt.%Co coatings depended on the feedstock powder structure. The shape of tungsten carbide particles was rounder and the volume fraction of carbide phase decreased in coatings as the tungsten carbide particle size decreased.

The Use of Hard Alloy Waste in Composite Galvanic Coatings for the Restoration of Car Parts

2020 ◽  
Vol 299 ◽  
pp. 258-263
Author(s):  
Boris A. Semenikhin ◽  
Lyubov P. Kuznetsova ◽  
Vladimir I. Kozlikin
Keyword(s):  
Particle Size ◽  
Wear Resistance ◽  
Tungsten Carbide ◽  
Hard Alloy ◽  
Dispersed Phase ◽  
Hard Alloys ◽  
Time Increase ◽  
Micro Hardness ◽  
Repair Costs ◽  
Iron Plating

The results of the research of the use of powders based on tungsten carbide with a particle size of 1 μm or less, obtained by the method of electro-erosion dispersion from the waste of sintered hard alloys, as a dispersed phase of composite galvanic coatings based on iron during the restoration and hardening of car parts are presented. It is shown that the introduction powders of hard alloys of grades VK8 and T15K6 in the chloride electrolyte of iron plating with a concentration of 100 g/l and more, practically does not affect the micro-hardness, but allows to increase the relative wear resistance of the obtained composite galvanic coatings, compared to simple iron galvanic coatings, and, at the same time, increase the life of parts and reduce repair costs.

COLMONOY No. 83 PTA

Alloy Digest ◽  
1995 ◽  
Vol 44 (12) ◽  
Keyword(s):  
Wear Resistance ◽  
Compressive Strength ◽  
Physical Properties ◽  
Tungsten Carbide ◽  
Tensile Properties ◽  
Powder Metal ◽  
Application Method ◽  
Plasma Transferred Arc ◽  
Transferred Arc ◽  
Nickel Base

Abstract COLMONOY No. 83 PTA is a nickel-base hard surfacing alloy containing tungsten carbide. The application method is plasma transferred arc and the application is designed to protect extrusion screws. This datasheet provides information on composition, physical properties, microstructure, hardness, tensile properties, and compressive strength. It also includes information on wear resistance as well as machining and powder metal forms. Filing Code: Ni-493. Producer or source: Wall Colmonoy Corporation.

scholarly journals Effect of initial particle size and various composition on the spark plasma sintering of binderless tungsten carbide

2021 ◽  
Vol 1758 (1) ◽  
pp. 012022
Author(s):  
E A Lantsev ◽  
N V Malekhonova ◽  
V N Chuvil`deev ◽  
A V Nokhrin ◽  
M S Boldin ◽  
...  
Keyword(s):  
Particle Size ◽  
Tungsten Carbide ◽  
Spark Plasma Sintering ◽  
Initial Particle ◽  
Initial Particle Size ◽  
Plasma Sintering ◽  
Spark Plasma

An Experimental Investigation on Mechanical and Wear Properties of Al7075/SiCp Composites: Effect of SiC Content and Particle Size

2017 ◽  
Vol 140 (3) ◽  
Author(s):  
Thella Babu Rao
Keyword(s):  
Particle Size ◽  
Tensile Strength ◽  
Wear Resistance ◽  
Ultimate Tensile Strength ◽  
Matrix Material ◽  
Mechanical Tests ◽  
Experimental Investigations ◽  
Wear Properties ◽  
Sic Particles ◽  
Sic Particle

One of the major advantages of metal matrix composites (MMCs) is that their tailorable properties meet the specific requirements of a particular application. This paper deals with the experimental investigations done on the effects of the reinforcement particulate size and content on the Al7075/SiC composite. The composites were manufactured using stir casting technique. The effect of SiC particle size (25, 50, and 75 μm) and particulate content (5, 10, and 15 wt %) on the microstructural, mechanical properties, and wear rate of the composites was studied and the results were analyzed for varied conditions of reinforcement. Scanning electron microscope (SEM) examinations were used to assess the dispersion of SiC particles reinforced into the matrix alloy and was found with reasonably uniform with minimal particle agglomerations and with good interfacial bonding between the particles and matrix material. X-ray diffraction (XRD) analysis confirmed the presence of Al and SiC with the composite. The results of mechanical tests showed that the increasing SiC particle size and content considerably enhanced the ultimate tensile strength and hardness of the composites while the ductility at this condition was decreased. The highest ultimate tensile strength of 310 MPa and hardness of 126 BHN were observed for the composites containing 15 wt %. SiC at 75 μm. Lesser the wear resistance of the reference alloy while it was enhanced up to 40% with the composites. The wear resistance was increased up to 1200 m of sliding distance for all the composites, whereas for the composite containing 75 μm SiC particles, it was extended up to 1800 m.

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