Results 291 to 300 of about 69,895 (322)

Reprogramming M2b Macrophages via GPX1 Activation by Selenium Nanoparticles Attenuates Lupus Nephritis

Advanced Science, EarlyView.
SeZM NPs selectively target M2b macrophages through mannose–MRC1 (CD206) recognition, enhance GPX1 biosynthesis, and suppress mitochondrial ROS generation, oxidative stress, and JAK–STAT signaling. This dual regulation reduces pro‐inflammatory cytokine release, limits immune cell infiltration and fibrosis, and preserves renal function, providing a ...
Haoran Lv, Guanning Huang, Hongyu Li, Hanzhi Liang, Huajing Peng, Kefei Wu, Wenfang Chen, Dandan Zhang, Kexin Ma, Yufei Du, Siweier Luo, Yi Zhou, Haiping Mao, Wei Chen, Tianfeng Chen, Yiming Zhou, Qinghua Liu   +16 more
wiley   +1 more source

Beyond Sabatier: Multiplicate Spillover Phenomena for Manipulating Catalytic Dynamics in Various Electrocatalysis

Advanced Science, EarlyView.
Various spillover‐mediated electrocatalytic reactions, such as hydrogen and oxygen evolution, carbon dioxide and nitrogen reduction, and methanol oxidization reactions, are systematically summarized. Abstract Spillover phenomenon, which is characterized by the dynamic migration of active species across catalyst surfaces, provides a promising avenue to ...
Di Wang, Ziyou Dong, Qianqian Yao, Shixue Dou, Jun Mei, Ziqi Sun   +5 more
wiley   +1 more source

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2018
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WC-Co Versus Ticn/WC–Co, Ni For New Cutting Tools

Euro PM2023 Proceedings, 2023
Advanced cutting tools are required for the new challenge of the machining industry to make more sustainable solutions. Material extrusion (MEX), as an indirect additive manufacturing technology, could be used to process hardmetals (WC-Co) and, also, the designated cermets (TiCN/WC and Co, Ni).
Gonçalo Oliveira, Ricardo Mineiro, Ana Maria Rocha Senos, Cristina Fernandes, Daniel Figueiredo, Teresa Vieira Maria   +5 more
openaire   +1 more source

Grinding of WC–Co hardmetals

Wear, 2001
Morphol. of ground surface of WC-Co cermets with 10 and 20% Co was studied. A deformed and detached surface layer was found on top of the specimens after surface grinding with a diamond wheel. Etching the surface layer revealed WC grains in the subsurface of the machined specimens. Most of these grains were plastically deformed by prismatic slip in the
Hegeman, J.B J W, de Hosson, J.T.M., de With, G.   +2 more
openaire   +1 more source

Friction and Wear Behaviors of WC-Co/WC-Co Pairs in Air

Materials Science Forum, 2007
To investigate sliding friction and wear behaviors of WC–Co/WC–Co pairs containing different WC grain sizes, the ball-on-disc test in air were carried out for WC-Co containing WC grain sizes of 0.5 μm (F.G.) and 1.5 μm (C.G.). The results show that the wear volume of F.G. pin for F.G. pin/C.G. disc is larger than that of F.G. pin for F.G. pin/F.G. disc
Hiroyuki Hosokawa, Takeshi Nakajima, Koji Shimojima   +2 more
openaire   +1 more source

Schleifen von WC-Co-Hartmetallen*/Grinding of Cemented Carbides (WC-Co)

wt Werkstattstechnik online, 2016
Beim Schleifen mehrphasiger Werkstoffe mit sprödhartem Charakter, beispielsweise Hartmetall, wurde ein Übergang von sprödhartem zu duktilem Werkstoffverhalten nachgewiesen. Der Fachartikel stellt eine neu entwickelte Methodik zur systematischen Analyse des Zerspanverhaltens – im Speziellen den Übergang von vorwiegend duktilem zu überwiegend sprödhartem
C. Wirtz, F. Vits, P. Mattfeld, F. Prof. Klocke   +3 more
openaire   +1 more source

Mechanisms of plastic deformation of WC–Co and Ti(C, N)–WC–Co

International Journal of Refractory Metals and Hard Materials, 2006
The deformation of the cutting edge of inserts made from WC–Co and Ti(C, N)–19%WC–Co upon radial turning was measured as a function of the cutting speed. Ab initio calculations of some grain boundary geometries in WC–Co indicated that Co segregates to WC/WC grain boundaries in submonolayer proportions and increases their strength and resistance to Co ...
Gustaf Östberg, Katharina Buss, Mikael Christensen, Susanne Norgren, Hans-Olof Andrén, Daniele Mari, Göran Wahnström, Ingrid Reineck   +7 more
openaire   +1 more source

Segregation of Vanadium at the WC/Co Interface in VC-doped WC-Co

Journal of Materials Research, 1998
Morphology of carbide grain in WC–12 wt.% Co–0.5 wt.% VC was examined by HREM and EDS with a special interest in the segregation of V at the WC/Co interfaces. A small addition of VC in WC-Co is effective to suppress the grain growth of carbide grains.
A. Jaroenworaluck, T. Yamamoto, Y. Ikuhara, T. Sakuma, T. Taniuchi, K. Okada, T. Tanase   +6 more
openaire   +1 more source

Fast Consolidation of WC–Co

Powder Metallurgy, 2002
AbstractCommercial tungsten carbide (WC) was coated with cobalt (Co) using a chemical precipitation technique. The coated powders were characterised for chemical composition and uniformity of coating. TEM and SEM were used to observe the nature of the cobalt coating on WC particles.
A. Sampath, J. J. Stiglich, T. S. Sudarshan, R. Singh, K. S. Choi   +4 more
openaire   +1 more source