Generation and characterisation of nano tungsten carbide particle by wire explosion process

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.

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Thermodynamic Modelling and Characterisation of TiO2 nanoparticles Produced by Wire Explosion Process

Materials Today Proceedings ◽

10.1016/j.matpr.2018.04.142 ◽

2018 ◽

Vol 5 (9) ◽

pp. 17304-17311 ◽

Cited By ~ 3

Author(s):

Prem Ranjan ◽

Esun Selvam ◽

Rengaswamy Jayaganthan ◽

Hisayuki Suematsu ◽

Ramanujam Sarathi

Keyword(s):

Tio2 Nanoparticles ◽

Thermodynamic Modelling ◽

Wire Explosion ◽

Explosion Process

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Effect of Load and Composition on Friction and Dry Sliding Wear Behavior of Tungsten Carbide Particle-Reinforced Iron Composites

Tribology Transactions ◽

10.1080/10402004.2013.870272 ◽

2014 ◽

Vol 57 (2) ◽

pp. 292-299 ◽

Cited By ~ 8

Author(s):

Debalina Bhattacharjee ◽

Kamaraj Muthusamy ◽

Sarathi Ramanujam

Keyword(s):

Tungsten Carbide ◽

Sliding Wear ◽

Carbide Particle ◽

Wear Behavior ◽

Dry Sliding Wear ◽

Dry Sliding

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.834-836.609 ◽

2013 ◽

Vol 834-836 ◽

pp. 609-612 ◽

Cited By ~ 1

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.

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