Results 301 to 310 of about 378,762 (347)

The Effect of Copper Particles Size on Hardness, Wear Resistance and Friction Coefficient of Fiberglass-Carbon Particles-Copper Particles Reinforced Composite

Materials Science Forum, 2021
Brake lining plays an important role in the vehicle braking process. So far, most of the brake lining is made of asbestos. Unfortunately, asbestos powder can be toxic to the human body. Composites have the potential as a substitute for asbestos. Fiber-reinforced composites can be modified with particles to improve mechanical properties. This study aims
Pramuko Ilmu Purboputro, Agung Setyo Darmawan   +1 more
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Copper Hardening with Fine Iron Particles

Powder Metallurgy and Metal Ceramics, 2017
The production of sintered bulk Cu–(5–25% Fe) pseudoalloys retaining the α-iron phase is studied. The pseudoalloys with a relative density of 97.5–98.1% are prepared by sintering a powder mixture of the metals reduced from their nanosized oxides. The microstructure of the composites represents a copper matrix with α-iron phase inclusions of about 20 ...
P. Ya. Radchenko, O. I. Get’man, V. V. Panichkina, V. V. Skorokhod, N. I. Danilenko   +4 more
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Enhanced Catalytic Performance of Subnano Copper Oxide Particles

ACS Nano, 2020
Subnanoparticles (SNPs) with ultrasmall particle sizes (
Kazutaka Sonobe, Makoto Tanabe, Kimihisa Yamamoto   +2 more
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Single particle lifetime in copper

Journal of Physics F: Metal Physics, 1980
The lifetimes and energies of the electronic excitations have been calculated in copper, using the standard augmented plane wave (APW) basis. The results show that the inverse lifetimes are slightly band-dependent and follow practically a parabola in the full energy range the author studied.
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Specific heat of fine copper particles

Nanostructured Materials, 1995
The specific heats of bulk Cu, CuO powder, and fine Cu particles with average particle sizes around 500 A were investigated for temperatures between 1 and 20 K, and 300 and 800 K. For temperatures below roughly 20 K, a quadratic temperature term of specific heat bT2 was observed in fine Cu particles, but not in bulk Cu and CuO powder.
Y.Y. Chen, Y.D. Yao, B.T. Lin, C.T. Suo, S.G. Shyu, H.M. Lin   +5 more
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Electroless Plating Copper on SiC Particles

Advanced Materials Research, 2014
Abstract. SiCp/Cu composites because of their excellent performance in the aerospace, carrying tools in the field with a wide range of applications, but the poor interfacial bonding limits its application. To improve the interfacial bonding between SiCp and copper, we use Copper Plating on SiCp particles coated handle. The results show that the optimal
Jian Zhang, Xin Guo Wang, Long Zhi Zhao, Ming Juan Zhao   +3 more
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Optical absorption of small copper particles and the optical properties of copper

Applied Optics, 1992
Small copper particles in a silicate glass have an optical absorption band at 0.565 microm. Transmission electron micrographs of the particles show they are ~4.5 nm in diameter. The measured optical absorption agrees closely with that calculated from measurements by Otter and Roberts of the optical properties of copper, in which they are corrected for ...
R, Doremus, S C, Kao, R, Garcia
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Interactions of Selenate with Copper(I) Oxide Particles

Langmuir, 2004
The chemical mechanisms responsible for the immobilization of selenate (SeO4(2-) from aqueous solutions on cuprite (Cu2O) particles were determined from batch experiments. This was achieved by performing both solution-phase analyses and characterization of solid particles by X-ray photoelectron spectroscopy and transmission electron microscopy ...
Walcarius, Alain, Devoy, J., Bessiere, J.   +2 more
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Particle size distribution of copper powder

Soviet Powder Metallurgy and Metal Ceramics, 1972
1. It is demonstrated that the primary particle radius distribution of PM-1 electrolytic copper powder is an exponential one. The particle size distribution of electrolytic copper powders can conveniently be characterized by means of a distribution function of the typef (r)=a exp [−a(r−b)], wherea and b are experimentally determined constants.
V. I. Kurinnoi, T. A. Komarova, N. A. Figurovskii, E. N. Semenova   +3 more
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Variation of Particle Size with Copper Content in Copper Cobalt Ferrite

Macromolecular Symposia, 2020
AbstractNanoparticle size polycrystalline aluminium substituted copper cobalt ferrite samples CuxCo1‐xFe2‐2yAl2yO4 (where x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0; y = 0.05, 0.15, and 0.25) have been prepared by standard ceramic technique. The effects of aluminium and copper on structural properties of cobalt ferrite are studied. A universal testing machine as
Subash S. Karande, Mahendra S. Kavale, Gurubasappa M. Pushpanjali, Bhanudas R. Karche   +3 more
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