Processing and characterization of WC–10Ni/–7Ni–3Cr based yttria stabilized zirconia spark plasma sintered composites

Alaneme, Kenneth Kanayo; Olubambi, Peter Apata; Andrews, Anthony P.

doi:10.1016/j.ijrmhm.2014.09.003

Cited by 4 publications

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References 20 publications

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“…Minor changes in shape of WC crystallites were also observed through the substitution of cobalt binder in WC-based cemented carbides using Fe [ 66 , 67 , 68 ], Ni [ 69 , 70 , 71 , 72 , 73 , 74 ], Al [ 75 , 76 ], Fe–Mn [ 77 , 78 , 79 , 80 , 81 , 82 ], Fe–Cu [ 83 ], Fe–Ni–Mo [ 84 ], Ni 3 Al [ 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 ], Ni–Cr [ 93 ], Y 2 O 3 [ 94 ], Al 2 O 3 [ 85 , 95 , 96 ], Ni, CoNi, NiCr, CoCr, CoNiCr, NiCrMo [ 97 ], MgO [ 98 , 99 ], ZrO 2 [ 100 , 101 , 102 ], La 2 O 3 [ 103 , 104 ], iron aluminides [ 65 , 105 , 106 , 107 , 108 , 109 ], stainless steel [ 110 , 111 , 112 , 113 ,…”

Section: Substitution Of Cobalt With Other Bindersmentioning

confidence: 99%

“…The increased oxygen concentration (Figure 11d) and presence of carbide inhibitors (Figure 11e) during LPS made the WC grains even more rounded. Minor changes in shape of WC crystallites were also observed through the substitution of cobalt binder in WC-based cemented carbides using Fe [66][67][68], Ni [69][70][71][72][73][74], Al [75,76], Fe-Mn [77][78][79][80][81][82], Fe-Cu [83], Fe-Ni-Mo [84], Ni3Al [85][86][87][88][89][90][91][92], Ni-Cr [93], Y2O3 [94], Al2O3 [85,95,96], Ni, CoNi, NiCr, CoCr, CoNiCr, NiCrMo [97], MgO [98,99], ZrO2 [100][101][102], La2O3 [103,104], iron aluminides [65,[105][106][107]…”

Section: Substitution Of Cobalt With Other Bindersmentioning

confidence: 99%

“…It appears that the WC grains surrounded by the Al0.5CoCrCuFeNi HEA binder are slightly more faceted than those surrounded by the equimolar CoCrCuFeNi HEA binder and Al2CoCrCuFeNi HEA binder with aluminum (see Figure 12). This result means that the faceting-roughening transition takes place at the WC/binder interfaces if one substitutes the simple cobalt-based binder using the HEA- Minor changes in shape of WC crystallites were also observed through the substitution of cobalt binder in WC-based cemented carbides using Fe [66][67][68], Ni [69][70][71][72][73][74], Al [75,76], Fe-Mn [77][78][79][80][81][82], Fe-Cu [83], Fe-Ni-Mo [84], Ni 3 Al [85][86][87][88][89][90][91][92], Ni-Cr [93], Y 2 O 3 [94], Al 2 O 3 [85,95,96], Ni, CoNi, NiCr, CoCr, CoNiCr, NiCrMo [97], MgO [98,99], ZrO 2 [100][101][102], La 2 O 3 [103,104], iron aluminides [65,[105]…”

Section: Faceting-roughening Of Wc/hea Binder Interfacesmentioning

confidence: 99%

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Faceting/Roughening of WC/Binder Interfaces in Cemented Carbides: A Review

Straumal

Konyashin

2023

Materials

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Hardmetals (or cemented carbides) were invented a hundred years ago and became one of the most important materials in engineering. The unique conjunction of fracture toughness, abrasion resistance and hardness makes WC-Co cemented carbides irreplaceable for numerous applications. As a rule, the WC crystallites in the sintered WC-Co hardmetals are perfectly faceted and possess a truncated trigonal prism shape. However, the so-called faceting–roughening phase transition can force the flat (faceted) surfaces or interfaces to become curved. In this review, we analyze how different factors can influence the (faceted) shape of WC crystallites in the cemented carbides. Among these factors are the modification of fabrication parameters of usual WC-Co cemented carbides; alloying of conventional cobalt binder using various metals; alloying of cobalt binder using nitrides, borides, carbides, silicides, oxides; and substitution of cobalt with other binders, including high entropy alloys (HEAs). The faceting–roughening phase transition of WC/binder interfaces and its influence on the properties of cemented carbides is also discussed. In particular, the increase in the hardness and fracture toughness of cemented carbides correlates with transition of WC crystallites from a faceted to a rounded shape.

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