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Ksenia E. Smetanina, Pavel V. Andreev, Evgeny A. Lantsev, Aleksey V. Nokhrin, Artem A. Murashov, Natalia V. Isaeva, Yury V. Blagoveshchensky, Maksim S. Boldin and Vladimir N. Chuvil?deev
The research results conducted on binderless tungsten carbide (WC) ceramics obtained by spark plasma sintering (SPS) of WC powders with different average particle sizes (95, 800, 3000 nm) are presented. Nonuniform distribution of crystalline phases and m...
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Christian Micallef, Yuri Zhuk and Adrianus Indrat Aria
Owing to their high hardness, fracture toughness and oxidation resistance, tungsten carbide (WC) coatings are extensively deposited on parts that operate in demanding applications, necessitating wear, erosion, and corrosion resistance. The application of...
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Yong Du, Jiageng Chen, Xin Liu, Chun Lu, Jiayue Xu, Biplab Paul and Per Eklund
Flexible n-type tungsten carbide/polylactic acid (WC/PLA) composites were fabricated by additive manufacturing and their thermoelectric properties were investigated. The preparation of an n-type polymer-based thermoelectric composite with good stability ...
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Xinkun Suo, Shuo Yin, Hua Li and Rocco Lupoi
Cold sprayed WC-Co metal matrix composite coatings have shown great potential in wear-resistance applications. This work aims to use experimental and numerical methods to clarify the deposition and particle?substrate bonding behavior of a single porous W...
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Liping Xu, Jinbing Song, Xiaofeng Zhang, Changguang Deng, Min Liu and Kesong Zhou
There is an urgent need to improve the corrosion resistance of WC-based cermet coatings in different corrosive environments. The main objective of this work was to investigate the microstructure and evaluate the corrosion resistance in neutral, acidic, a...
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Wolfgang Tillmann, Leif Hagen and Weifeng Luo
Residual stresses have been a major source of concern, as they are an inevitable consequence of manufacturing and fabrication processes. The magnitude of these stresses is often as high as, or at least, comparable to the yield strength of the material. I...
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Holger Schwarz, Thomas Uhlig, Thomas Lindner, Thomas Lampke, Guntram Wagner and Thomas Seyller
We demonstrate the systematic hardness enhancement of the CoCrFeNi high-entropy alloy (HEA) by the addition of tungsten carbide (WC). Mixed thin films are fabricated by magnetron co-sputtering using a home-made spark plasma-sintered CoCrFeNi target and a...
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Mibbeum Hahn, Yeungjung Cho, Gunhee Jang and Bumcho Kim
We developed and optimized a block-type ultrasonic horn that can be used for cutting hard materials. The proposed block-type sonotrode consists of an aluminum horn and a tungsten carbide blade to increase the cutting of hard materials. We designed an ini...
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Changhang Xu, Xumei Gong, Wuyang Zhang and Guoming Chen
Polycrystalline diamond compact (PDC) bits are commonly used drill bits in the petroleum drilling industry. Cracks often occur on the surface of a bit, which may result in the unexpected suspension of the drilling operation, or even accidents. Therefore,...
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Harald Hetzner, Christoph Schmid, Stephan Tremmel, Karsten Durst and Sandro Wartzack
Tungsten-modified hydrogenated amorphous carbon coatings (a-C:H:W) were deposited on high speed steel by reactive magnetron sputtering of a tungsten carbide target in an argon-ethine atmosphere. The deposition parameters, sputtering power, bias voltage, ...
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Stanislav Hryhoriev,Damir Bikulov,Vi?tor Skachkov,Olga Berezhnaya,Oleksandr Oliynyk
Pág. 31 - 36
X-ray diffraction phase analysis of samples performed on a DRON-6 diffractometer has shown that the processes of CaWO4 transition to WC and W2C had the highest probability in the temperature range of 1,173?1,473 K. The end-product CaWO4, thermally treate...
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Vadzim Chayeuski, Abdelhafed Taleb, Valery Zhylinski, Andrei Kuleshov and Roman Shtempliuk
This paper presents the results of a study on the preparation and characterization of a Cr-DND/MoN detonation chromium-nanodiamond coating deposited on cemented tungsten carbide (WC?3 wt.% Co) mill blades using Arc-PVD and electrodeposition methods. The ...
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Mina Dadvand and Oumarou Savadogo
Crack-free and uniform nickel?tungsten (NiW) coatings and their composite coatings filled with ceramic particles such as silicon carbide (SiC) and hexagonal-boron nitride (hBN) were deposited on brass substrates by applying direct current (DC) waveforms....
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Yuan Feng, Jiangbo Cheng, Dan Liu and Xiubing Liang
The tribological properties of the FePSiB amorphous/nanocrystalline coatings with Cr and Nb additions were investigated in reciprocating mode against tungsten carbide friction coupling with different dry sliding conditions. The wear rates of the FePSiB-b...
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João Ribeiro, Hernâni Lopes, Luis Queijo, Daniel Figueiredo
Pág. 30 - 35
This paper presents a study of the Taguchi design application to optimize surface quality in a CNC end milling operation. The present study includes feed per tooth, cutting speed and radial depth of cut as control factors. An orthogonal array of L9 was u...
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Nicholas Petzinna, Vladimir Nikora, Joe Onoufriou and Benjamin J. Williamson
With rising interest in marine renewable energy (MRE) associated with offshore wind, waves, and tidal flows, the effects of device placement on changes in animal behaviour require proper assessment to minimise environmental impacts and inform decision ma...
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Sergio Alexandre Gehrke, Berenice Anina Dedavid, Germán Odella Colla, Piedad N. De Aza and Leticia Pérez-Díaz
(1) Background: The present pilot in vitro study evaluated, physically and biologically, the effects produced by the wear of the titanium surface using different drill models. (2) Methods: Titanium disks were subjected to wear using four different burs a...
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Roberto Lo Giudice, Francesco Puleio, David Rizzo, Angela Alibrandi, Giorgio Lo Giudice, Antonio Centofanti, Luca Fiorillo, Debora Di Mauro and Fabiana Nicita
Background: Bone regeneration is a reliable technique when the bone volume is insufficient to provide a functional and aesthetic outcome in surgery and implantoprosthesis procedures. When bone blocks are used but do not match the shape of the defect, the...
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Jianguo Zhang, Xia Ji, Jinsong Bao and Xiaohu Zheng
Silicon-doped (Si-doped) diamond films were deposited on a Co-cemented tungsten carbide (WC-Co) substrate using the hot filament chemical vapor deposition (HFCVD) method with a mixture of acetone, tetraethoxysilane (TEOS), and hydrogen as the recant sour...
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Harald Hetzner, Christoph Schmid, Stephan Tremmel, Karsten Durst and Sandro Wartzack
Tungsten-modified hydrogenated amorphous carbon coatings (a-C:H:W) were deposited on high speed steel by reactive magnetron sputtering of a tungsten carbide target in an argon-ethine atmosphere. The deposition parameters, sputtering power, bias voltage, ...
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