Binder jet printed WC infiltrated with pre-made melt of WC and Co

Cramer, Corson L.; Aguirre, Trevor G.; Wieber, Natalie R.; Lowden, R.A.; Trofimov, Artem A.; Wang, Hsin; Yan, Jiaqiang; Paranthaman, M. Parans; Elliott, Amy M.

doi:10.1016/j.ijrmhm.2019.105137

Cited by 35 publications

(12 citation statements)

References 32 publications

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“…Another important indicator of WC-Co samples is fracture toughness. The fracture toughness of BJAM samples can reach 17 MPa m 1/2 [78], and even samples with fracture toughness of about 25 MPa m 1/2 have been prepared [77,138]. The fracture toughness of the sample prepared by SEBM is 13 MPa m 1/2 , but the author believes that this value cannot reflect the true fracture toughness of the sample, for the fracture toughness can reach 20 MPa m 1/2 when calculated based on the cracks perpendicular to the WC layer [41].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Additive manufacturing of WC-Co hardmetals: a review

Yang

Zhang

Wang

et al. 2020

Int J Adv Manuf Technol

112

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WC-Co hardmetals are widely used in wear-resistant parts, cutting tools, molds, and mining parts, owing to the combination of high hardness and high toughness. WC-Co hardmetal parts are usually produced by casting and powder metallurgy, which cannot manufacture parts with complex geometries and often require post-processing such as machining. Additive manufacturing (AM) technologies are able to fabricate parts with high geometric complexity and reduce post-processing. Therefore, additive manufacturing of WC-Co hardmetals has been widely studied in recent years. In this article, the current status of additive manufacturing of WC-Co hardmetals is reviewed. The advantages and disadvantages of different AM processes used for producing WC-Co parts, including selective laser melting (SLM), selective electron beam melting (SEBM), binder jet additive manufacturing (BJAM), 3D gel-printing (3DGP), and fused filament fabrication (FFF) are discussed. The studies on microstructures, defects, and mechanical properties of WC-Co parts manufactured by different AM processes are reviewed. Finally, the remaining challenges in additive manufacturing of WC-Co hardmetals are pointed out and suggestions on future research are discussed.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Additive manufacturing of WC-Co hardmetals: a review

Yang

Zhang

Wang

et al. 2020

Int J Adv Manuf Technol

112

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“…2 ) is lower than WC-Co hard alloy(∼2020.4µA/cm 2 ). In short, it can be concluded that WC-Al 2 O 3 composites had more positive E corr value, lower i corr and i pass values, indicating that WC-Al 2 O 3 composites possessed better corrosion performance in NaCl solution from corrosion thermodynamics and corrosion kinetics.…”

mentioning

confidence: 80%

“…Platinum sheet was used as counter electrode. The area of the electrodes is 1cm 2 . The open circuit potential curves were monitored for about 12h in NaCl solution.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

“…Conventional WC-based hard metals consist of WC phase and metal binder (Fe, Co, Ni, etc. ), which could lead to high hardness and fracture toughness of hard alloys [1][2][3][4][5][6]. Among the conventional WC-based hard metals, because the metal binder is chemically active and susceptible to corrosion, the development of binderless WC-based hard composites has become an inevitable demand.…”

Section: Introductionmentioning

confidence: 99%

“…All the samples used for electrochemical corrosion tests were cut into squares from the hotpressing sintered samples. The exposed area of the electrochemical corrosion samples is 1cm 2 .…”

Section: Introductionmentioning

confidence: 99%

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Comparison On The Immersion Corrosion and Electrochemical Performance of WC-Al2O3 Composites and WC-Co Hard Metal in NaCl Solution

Han

Dong

Fan

et al. 2021

Preprint

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WC-15wt.%Al2O3 composites was prepared via hot pressing sintering technology. The corrosion behaviors of WC-Al2O3 composites and traditional WC-Co hard alloy in NaCl solution were studied by immersion corrosion and electrochemical technique. The impedance value of WC-Al2O3 composite increased more rapidly than WC-Co hard metal during the 24 hours, which indicated that WC-Al2O3 composites has more compact passivation film than WC-Co hard metal. The results confirmed that the corrosion performance of WC-Al2O3 composites was higher than WC-Co cemented carbide in NaCl solution. The corrosion mechanism of WC-Al2O3 composites and WC-Co hard alloy in NaCl solution were also revealed by SEM, EDS, XPS and Raman. The corrosion products of WC-Al2O3 composites mainly contain WO3, while for WC-Co hard alloy are Co (OH)2, Co3O4 and WO3. The different corrosion mechanism of the two materials is attributed to the Al2O3 phase instead of the Co binder, which avoids the galvanic corrosion between WC phase and Co binder.

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