Tungsten Carbide - an overview | ScienceDirect Topics
Tungsten carbide is a compound that is known for its high melting point, extreme hardness, low friction, chemical stability, resistance to oxidation, and excellent electrical conductivity. It is not easily obtained from its elements through a specific reaction process.
Tungsten Carbide - an overview | ScienceDirect Topics
Tungsten carbide is cermet, a ceramic crystalline material that is bound together with a metallic binder. In the case of seal rings, this is either cobalt or nickel. Tungsten carbide was the first hard, high-strength and high-conductivity material to be used for seal faces and was quite widely used in the 1960s and 1970s.
When tungsten meets carbon - ScienceDirect
2024年2月1日 · Tungsten carbide [WC] is the only stable carbide in the two-phase system tungsten and carbon at room temperature up to 2785 °C, at which an incongruent melting takes place. WC shows a hexagonal crystallographic structure …
Tungsten carbide – Titanium carbide composite preparation by arc …
2019年3月1日 · For calculation purpose, Poisson's ratio of the tungsten carbide composite was taken 0.21 which is the typical value for WC. Elastic modulus (E s ) of the test material was calculated using the following equation. 1 E r = ( 1 − ν s 2 ) E s + ( 1 − ν i 2 ) E i where ν s is the Poisson's ratio of the material being tested, E i and ν i are ...
Inelastic behavior of tungsten carbide at high pressures
2022年2月1日 · Tungsten carbide (WC) is commonly used in plate impact experiments for generating high pressures due to its combination of high impedance and high strength. In pressure-shear plate impact (PSPI) experiments, WC is used as anvil plates, which sandwich a thin sample of the material of interest.
Tungsten toxicity and carcinogenesis - ScienceDirect
2023年1月1日 · Tungsten exists industrially in multiple forms including tungsten metal, tungsten carbide (equal parts tungsten metal and carbon) and tungstate. Tungsten metal or tungsten carbide is often found to exist industrially as an alloy with other metals including cobalt, nickel, and iron ( Kraus et al., 2001 ; Roedel, Cafasso, Lee, & Pierce, 2012 ...
Tungsten Carbide - an overview | ScienceDirect Topics
Tungsten carbide powder is the base for the production of cemented carbides, the vast class of hard, wear resistant, refractory materials in which the hard carbide particles are bound together, or cemented, by a soft and ductile metal binder. Conventional manufacturing of tungsten carbide powders accounts world-wide for the bulk of the tungsten ...
Study on electrochemical anodization initiation and progression of ...
2024年12月1日 · Tungsten carbide (WC) has been widely recognized for its exceptional properties, including high hardness, excellent wear resistance, and remarkable thermal stability [1], [2], [3]. The material's exceptional hardness and wear resistance make it the preferred choice for demanding applications in many fields [4]. WC plays a crucial role in ...
Impact failure and fragmentation properties of tungsten carbide
1999年12月1日 · Tungsten carbide is a high-density ceramic used in both military projectile and armor applications. In this report, we present data for the purposes of examining the mechanisms of dynamic failure in tungsten carbide ceramic and deriving material response properties appropriate to computational models.
Selective synthesis of tungsten carbide phases W2C and WC as ...
2022年1月1日 · Tungsten carbide synthesis by carburization of a high-oxidation-state precursor proceeds over several reduction and carbon insertion steps. The typically observed products for this process include bulk solid phases W, W 2 C, and WC and volatile products H 2 O and CO, as illustrated in Scheme 1. In addition, carbon may be deposited on the solids.