The Analysis of Erosive Wear Resistance of WC-Co Carbides Obtained by Spark Plasma Sintering Method

Wachowicz, Joanna; Dembiczak, Tomasz; Stradomski, G.; Bałaga, Z.; Jasińska, Joanna; Rydz, Dariusz; Wilkowski, Jacek; Dyner, Marcin

doi:10.3390/ma14237326

Cited by 4 publications

(3 citation statements)

References 36 publications

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“…(Mata, 2011) Erosive wear was found to be one of the main surface failures expected as the process involved fluid flow. The erosive wear resistance of WC-Co carbides obtained by spark plasma sintering method was studied (Wachowicz, 2021). The study showed that erosion rate depends on sintering process of WC-Co and erosion medium.…”

Section: Introductionmentioning

confidence: 99%

Computational Study of Erosion Wear of Capillary Used in Laser Solder Ball Jetting Process

PREMJARUNAN,

TUCHINDA,

SOJIPHAN

2023

EPSTEM

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Solder Ball Bumper Jetting Process is used for high precision soldering in small area with high productivity. Cemented carbide (WC-Co) is the common material used for capillary due to its high strength and good wear resistance. Small paritcle induced during soldering process could cause particle erosion wear and it is found to be one of the surface failure mostly controlling capillary in-service life. The particles were expected to be hard particle generated by surface wear in the earlier process. This research aims to study the material behavior under particle impact to increase the understanding of capillary failure based on particle impingement erosion wear using Finite Element Method (FEM). The effect of contact paramters, i.e. impact angle of particle and particle size, on failure of capillary tip was studied. The impact angle variation between 10, 30, 60, 90 degree and particle size variation of 0.5, 0.75, 1 micrometer were considered. The result showed that higher angle of impact can lead to higher stress developed while particle size effect depends strongly on the contact area which relies on impact angle. In case of 60 and 90 degree of impact, results showed a trend of decreasing developted stress with increasing particle size. While 10 and 30 degree of impact showed a trend of increasing in developed stress when particle size increased. The research results could be used as guidelines to improve the capillary design or soldering process to incrase the capillary in-service life or minimize the chance for capillary failure at unexpected short time period.

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Section: Introductionmentioning

confidence: 99%

Computational Study of Erosion Wear of Capillary Used in Laser Solder Ball Jetting Process

PREMJARUNAN,

TUCHINDA,

SOJIPHAN

2023

EPSTEM

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“…The conventional cemented carbide possesses the refractory carbide matrix (e.g., WC, TiC and TaC), with ductile Co as the binder. Due to its excellent bending strength, wettability and work hardening properties, Co has been widely used in producing WC-Co cemented carbides [1][2][3][4]. However, as a key and scarce strategic metal, Co is expensive, and its toxicity and pollution issues cannot be ignored.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Carbon Content on the Microstructure and Mechanical Properties of Cemented Carbides with a CoNiFeCr High Entropy Alloy Binder

et al. 2022

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CoNiFeCr high entropy alloy (HEA) was used as a binder in cemented carbides for developing a new high-performance binder. The microstructure of WC-HEA cemented carbides with different binder components and carbon contents was subsequently studied. It was observed that the (Cr,W)C phase precipitated at the WC/HEA interface, and a coherent interface with a low degree of misfit was formed between WC and (Cr,W)C, thereby resulting in a significant reduction in the interfacial energy and stress concentration. The (Cr,W)C phase exerted a pinning force (Zener-drag) on the moving grain boundaries, which effectively inhibited the growth of WC grains. As a result, compared with WC-Co, WC-CoNiFeCr had smaller WC grain size, smoother grain shape and larger mean free path (MFP) of the binder, which resulted in slightly lower hardness and higher transverse rupture strength (TRS) and fracture toughness. The lower limit of carbon content in WC-CoNiFeCr was higher than that of WC-Co. With the addition of Ni, the width of the two-phase region became wider, whereas the width of the two-phase region became narrower with the addition of Fe and Cr.

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“…Tungsten carbide (WC) is one of the most important materials used for scientific research, industrial molds and products, and precision tools [ 1 , 2 , 3 ], owing to its high hardness, high strength, corrosion resistance [ 4 , 5 , 6 ], wide range of wear resistance and good fracture toughness [ 7 , 8 , 9 ]. Among the different kinds of WC, binder-less tungsten carbide (termed ‘WC-0Co’) is mainly used for the manufacture of precision molds in the fields of optics and aerospace [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Binder during Ultra-Precision Polishing of Tungsten Carbide Using a Semirigid Bonnet Tool

et al. 2022

Materials

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Tungsten carbide (WC) has the characteristics of high hardness, high strength, corrosion resistance, wear resistance and excellent fracture toughness. Accordingly, it has been commonly used as the material for cutting tools and molds in glass-forming techniques. To obtain ultra-smooth surfaces, fine polishing of WC is indispensable. However, the efficiency of WC polishing is low using the existing polishing methods, and the mechanism behind the polishing process requires further investigation. Specifically, the effect of the binder in WC polishing is not clear since there are different kinds of WC with various weight percentages of the binder. In this paper, we present the findings of a study on the polishing performance of two kinds of WC material, with and without the binder, using a semi-rigid (SR) bonnet polishing tool. A series of experiments were performed on a 6-DOF robotic polishing instrument to investigate the material-removal characteristics, surface integrity and sub-surface damage after polishing. The results demonstrate that the SR bonnet polishing tool successfully reduced the surface roughness of WC with and without the binder to the nanometric level, though the lowest surface roughness was obtained on binder-less WC. No obvious sub-surface damage was observed under SEM inspection, while the processing efficiency was greatly improved owing to the high material removal rate of the tool. Based on our analysis of key polishing parameters and corresponding surface integrities, the effect of the binder on the polishing performance is explained, which offers excellent guidance for WC polishing.

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The Analysis of Erosive Wear Resistance of WC-Co Carbides Obtained by Spark Plasma Sintering Method

Cited by 4 publications

References 36 publications

Computational Study of Erosion Wear of Capillary Used in Laser Solder Ball Jetting Process

Computational Study of Erosion Wear of Capillary Used in Laser Solder Ball Jetting Process

The Effect of Carbon Content on the Microstructure and Mechanical Properties of Cemented Carbides with a CoNiFeCr High Entropy Alloy Binder

Effect of the Binder during Ultra-Precision Polishing of Tungsten Carbide Using a Semirigid Bonnet Tool

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