Feb 1, 2012 · The structure of these WC samples was characterized by X-ray diffraction (XRD) and the lattice pattern of the WC support was observed using high resolution transmission electron microscopy (HRTEM) together with electron diffraction.

XRD pattern of the WC powder ( Fig. 1) indicates pure single-phase WC of hcp symmetry with the lattice parameters a 0 b 0 0.29053 nm and c 0 = 0.28385 nm. The crystallite size, calculated...

Jan 1, 2005 · The XRD patterns for WC 1-x W 2 C and WC coatings obtained by the conventional Bragg-Brentano scan mode are presented in Fig. 2, labeled a, b, c respectively. As a quantitative comparison, Table 2 shows the chemical composition of films measured by EDS and XPS. Both methods give similar results.

Processing of tungsten carbide‑cobalt (WC-Co) by laser-based powder bed fusion (PBF-LB) can result in characteristic microstructure defects such as cracks, pores, undesired phases and tungsten...

The XRD pattern of the as-received WC powders is shown in Figure 1. It is clear that the as-received WC particles were composed of W 2 C, WC and free carbon (C). ...

Dec 26, 2023 · XRD analysis identified the formation of complex oxides and tungsten phases in coatings deposited using spraying technologies that result in melting of the feedstock powder such as HVOF and HVAF. These coatings include brittle phases such as W 3 Co 3 C or W 2 C due to decarburization of tungsten carbide particles.

WC –6 wt.% Co, and bulk alloys obtained by selective laser melting (SLM) from as-milled powders in as-melted state and after heat treatment were investigated by scanning electron microscopy and X-ray diffraction analysis. Initial and ball-milled powders consist of WC, hexagonal a-Co and face-centered cubic -Co.

tungsten carbide δ-WC (WC). Its XRD pattern is dis-played in Fig. 1. According to our results, WC has a hexagonal structure (sp. gr. Pm2 = ) with lattice parameters a = 0.2906 nm and c = 0.28375 nm. Both the W and C atoms in WC form simple hexagonal sub-lattices. The carbon atoms sit in the center position of

Aug 1, 2023 · Fig. 2 shows the XRD patterns of the sintered (CoCrNi) 100−x (WC) x (x = 0, 2, 4 and 6 at%) alloys. It can be observed that diffraction peaks corresponding to the FCC solid solution phase and carbide were present, while no diffraction peak for WC was observed.

The synthesis of tungsten monocarbide (WC) with the high specific surface area needed for a good dispersion of supported platinum is challenging, and we describe here an approach to produce WC ...