A new model for the hardness of cemented carbides is proposed. The model is based on the main assumption that very thin binder layers (a few atom layers) confined between hardphase grains are forced to behave m
Cemented carbide Cermet Microstructure Gradient Binder Properties 1. Introduction Cemented carbides1 and cermets are one of the most widespread powder metallurgy products worldwide. The reason for this is their outstanding combination of hardness and toughness compared to other cutting materials, such as...
with the porosity (and thus directly with the hardness), so that the densest (and thus the hardest) of these cemented carbides (the one sintered with a Fe/Co ratio of 1) also exhibited the lowest coefficients of friction, the lowest specific wear rates, and the lowest microstructural damage...
Concerning tool durability, the method of creating surface texture is crucial, with hardness testers emerging as a cost-effective, simple, and efficient mechanical option deserving further investigation. This is a preview of subscription content, log in via an institution to check access. Similar ...
Nickel-based superalloys have gained widespread use in various industries like aerospace, power generation, chemical processing, and marine engineering due to their exceptional mechanical properties. However, machining these superalloys poses significant challenges due to their hardness. To address these issue...
Adding a secondary reinforcement such as whiskers, nanoparticles, or nanofibers is also a widely sought method to enhance the properties of monolithic ceramics while also improving other properties such as hardness, thermal shock resistance, and thermal expansion coefficient [6]. Nonetheless, the ...
the tests using procedure18. Crystals of this size are rarely used in industry. Therefore, it is possible to determine adhesion using procedure18for the model samples only. Meanwhile, our test configuration makes it possible to determine adhesion for a fragment of the real-world sample of a ...
9.A cemented carbide mining insert comprising:one or more hard-phase components anda binder, wherein there is a hardness gradient from a first part of the surface of the cemented carbide mining insert to a second part of the surface of the cemented carbide mining insert, wherein the first ...
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These observations were explicable in the framework of a conceptual model based on the different severities of the leaching of the binder pools and weakening of the WC/binder interfaces induced by corrosion, followed by material pullout (of both individual WC grains and large chunks of WC grains...