The wear of ultrafine WC–Co hard metals

Allen, C.; Sheen, Maw-Tyan; Williams, Jason; Pugsley, V.A.

doi:10.1016/s0043-1648(01)00667-6

Cited by 88 publications

(31 citation statements)

References 12 publications

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“…Recently, Ti(C, N)-based cermets have been developed toward submicron, ultrafine and nano-composite structure because of the superior performance of sub-micron and ultrafine-grained structures [3][4][5][6][7][8]. However, grain growth always occurs in ultrafine grained cermets mainly due to the effects of fine grain or particle size and the dissolution-precipitation process, which results in the formation of inner rim phase and outer rim phases and intrinsically associates Ti(C, N)-based cermets [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effect of VC addition on sinterability and microstructure of ultrafine Ti(C, N)-based cermets in spark plasma sintering

Feng

Xiao

et al. 2008

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Effect of VC addition on sinterability and microstructure of ultrafine Ti(C, N)-based cermets in spark plasma sintering

Feng

Xiao

et al. 2008

Journal of Alloys and Compounds

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“…In standard methods employing coarse abradant for evaluation of abrasive wear resistance, finer WC-Co grades demonstrate better abrasion resistance of WC-Co hardmetals [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

On the Abrasion of Ultrafine WC–Co Hardmetals by Small SiC Abrasive

Krakhmalev

2008

Tribol Lett

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Abrasive wear of a series of WC-(5-14 wt.%) Co hardmetals was investigated employing P800 and P120 SiC abrasive papers. It was found that if fine abradant was utilized, submicron grades demonstrated substantially higher wear rates than the coarse grades. Such a behaviour was associated to different wear mechanisms operating for fine and coarse grades and correlated to the ratio of the abrasive size to size of the hard WC phase.

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“…For example, as illustrated in Fig. 5a, the Vickers hardness of sintered WC-Co lies in the range HV 800 to HV 2300 while the elastic modulus spans the range 450 to 650 GPa [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. The indentation fracture toughness of sintered WC-Co on the other hand decreases with increasing hardness of WCCo (primarily due to a decrease in Co content) as illustrated in Fig.…”

Section: Detonation Spray Coating Process Vis-à-vis Liquid Phase Sintmentioning

confidence: 99%

“…5b. The toughness values of sintered WC-Co span the range 10 to 18 MPa √m [5,[7][8][9][10][11][12][13][14]16,20,[22][23][24].…”

Section: Detonation Spray Coating Process Vis-à-vis Liquid Phase Sintmentioning

confidence: 99%

Detonation sprayed WC-Co coatings: unique aspects of their structure and mechanical behaviour

Sundararajan

Babu

2009

Trans Indian Inst Met

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Tungsten Carbide-Cobalt (WC-Co) Cermets are known for their excellent wear resistance. Conventionally, WC-Co cermets are produced by liquid phase sintering and such a process results in optimum combination and distribution of WC and Co phases and thus a good combination of hardness and toughness. In contrast to using bulk WC-Co, there are many applications wherein a thick coating of WC-Co over the surface of the engineering component (usually made from steel) represents a cost-effective option. Numerous thermal spray coating techniques have been extensively used to deposit thick WC-Co coatings on a variety of components and detonation spray coating represents one such coating technique capable of depositing hard and dense WC-Co coatings.However, as compared to bulk WC-Co, detonation sprayed WC-Co exhibit inferior properties and performance primarily because of the nature of the detonation spray coating process. In addition, depositing a WCCo coating on a component automatically introduces an interface between the coating and the substrate and the properties of this interface also become important in determining the overall performance of the WC-Co coating. The purpose of this article is to describe in detail the unique aspects of the structure and mechanical behaviour of detonation sprayed WC-Co coatings and contrast the same with the behaviour of bulk, liquid-phase sintered WC-Co cermet.have found extensive applications as cutting tools, wear resistant liners and inserts, mining tools and metal forming tools. Among the cemented carbides, the most widely used is the one based on WC as the carbide and Co as the binder phase. The Co content in WC-Co cemented carbide ranges from 6 to 40 volume percent with the balance 94 to 60% constituting the carbide phase. The properties of the WC-Co cemented carbide depends primarily on the Co phase content, WC cuboid size, inter-cuboid spacing and also on the contiguity between the WC phases. It has been observed that the toughness (indentation toughness) of WC-Co can

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The wear of ultrafine WC–Co hard metals

Cited by 88 publications

References 12 publications

Effect of VC addition on sinterability and microstructure of ultrafine Ti(C, N)-based cermets in spark plasma sintering

Effect of VC addition on sinterability and microstructure of ultrafine Ti(C, N)-based cermets in spark plasma sintering

On the Abrasion of Ultrafine WC–Co Hardmetals by Small SiC Abrasive

Detonation sprayed WC-Co coatings: unique aspects of their structure and mechanical behaviour

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