High-temperature oxidation behaviour of vacuum hot-pressed WC-15 wt% Al2O3 composites

Hui, Jiaqi; Han, Bin; Dong, Wen‐Kui; Zhu, Shigen

doi:10.1016/j.ceramint.2022.01.079

Cited by 14 publications

(6 citation statements)

References 30 publications

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“…In fact, in the typical case (WC-Co cermets), oxidation can start from low temperatures such as 500 • C [102]. In addition, the passivation capability in the oxide layer containing tungsten oxide is small, and cobalt independently has a low oxidation resistance and is easily oxidized at high temperatures [2,51,63]. Consequently, changing the binder can improve oxidation.…”

Section: Statistical Discussionmentioning

confidence: 99%

“…Figure 6 shows the distribution of the selected articles in terms of oxidation kinetic As can be seen from the figure, the percentage of studies that have modelled the oxidatio kinetics is a little less than half. Among these studies, the accordance of mass gain versu time by a parabolic function has a percentage of 15.1% [18,19,35,39,43,63,79,97]. Mean while, 15.1% of the articles have approximated the oxidation behavior of WC-cemente carbides linearly [3,11,17,20,51,69,71].…”

Section: Statistical Discussionmentioning

confidence: 99%

“…Investigation of oxidation kinetics and modeling the mass increment per surface unit over time in tungsten carbide cermets has been carried out in some research work [2,8,11,[16][17][18][19][20][33][34][35]39,43,51,52,57,63,[67][68][69]71,79,97]. Equations that model the mass changes per surface unit are classified into parabolic, linear, a combination of linear and parabolic, etc.…”

Section: Kinetics Of Oxidationmentioning

confidence: 99%

“…In this press type, a more homogeneous structure can be achieved compared to the cold press [56]. Some articles dealing with oxidation have used this method to produce tungsten carbide [18,[57][58][59][60][61][62][63].…”

mentioning

confidence: 99%

“…Alumina (Al 2 O 3 ): Alumina is also a cost-effective ceramic binder, with higher hardness, better corrosion/oxidation resistance, and higher chemical stability at high temperatures than cobalt, which has been used as the binder in oxidation investigations of tungsten carbides [54,[61][62][63]. Furthermore, in contrast to metal binders, Al 2 O 3 binder can not only facilitate the sintering process but also prevent the growth of tungsten carbide particles and the formation of W 2 C [5].…”

mentioning

confidence: 99%

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Effect of Binder on Oxidation Properties of Tungsten Carbides: A Review by a Conceptual Classification Approach

Fathipour,

Hadi,

Maleki

et al. 2024

Ceramics

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This study presents a conceptual classification scheme to review the literature on improving the oxidation resistance of tungsten carbide by modifying the binder. The first parts of the article are dedicated to the specification of the databases, the search method, and the description of the criteria chosen to classify the articles. Then, the data collected are presented in statistical graphs according to the proposed classification scheme. The data analyzed show that most of the significant improvements in oxidation resistance are achieved with advanced production processes, especially HIP and SPS, which eliminate porosity to a very high degree. In addition, statistical studies showed that the use of new replacement binders, Ni3Al, Fe–based alloys, FeAl, and Al2O3, improved the oxidation properties in 75–100% of cases. Meanwhile, the use of high–entropy alloys (HEAs) as cermet binders may be the subject of future research for oxidation, given the recently published results of good mechanical properties.

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