Results 261 to 270 of about 1,328,095 (306)
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Metal transfer measurements in gas metal arc welding
Journal of Physics D: Applied Physics, 2001The present work reports results obtained using combined laser shadowing and cross correlation techniques to investigate the metal transfer process. Experimental results of the droplet size and velocity of 0.9 mm and 1.2 mm wires from the globular region to the spray transfer region are presented.
Q Lin, X Li, S W Simpson
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Journal of Applied Physics, 1952
A new theory of metal transfer and wear is suggested in this paper. The essence of the theory is as follows: Metal transfer and wear take place at points of actual contact. The interfaces of the high spots that actually make contact are roughened as the result of plastic deformation when they carry normal load.
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A new theory of metal transfer and wear is suggested in this paper. The essence of the theory is as follows: Metal transfer and wear take place at points of actual contact. The interfaces of the high spots that actually make contact are roughened as the result of plastic deformation when they carry normal load.
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Photoinduced Metal-to-Metal Charge Transfer toward Single-Chain Magnet
Journal of the American Chemical Society, 2010Single-chain magnets (SCMs) that exhibit slow relaxation of their magnetization are attracting considerable attention. To tune the properties of such materials with external stimuli such as light, heat, and pressure is a challenge. Through the exploitation of light and heat induced transformation between diamagnetic Fe(II)(LS)(mu-CN)Co(III)(LS) (LS ...
Tao, Liu +3 more
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Controlling the electron transfer mechanism in metal–molecules–metal junctions
Electrochimica Acta, 2005We show how the mechanism of electron transfer through molecules can be switched between different regimes by using Hg-based metal–molecules–metal junctions. The junctions are easy to assemble and allow for hosting of self-assembled monolayers (SAMs) of a large variety of molecular structures.
E. TRAN +3 more
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1966
Publisher Summary This chapter focuses on certain fundamental aspects of forced convection heat transfer in symmetrical ducts that are of special interest when the fluid is a liquid metal. Compared to the nonmetallic liquids, the combination of large thermal conductivity, small vapor pressure, and extensive temperature range over which they remain in
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Publisher Summary This chapter focuses on certain fundamental aspects of forced convection heat transfer in symmetrical ducts that are of special interest when the fluid is a liquid metal. Compared to the nonmetallic liquids, the combination of large thermal conductivity, small vapor pressure, and extensive temperature range over which they remain in
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Heat Transfer in Liquid Metals
Journal of Fluids Engineering, 1958Abstract The problem of heat transfer in liquid metals is studied for the case of a fully developed turbulent flow in cylindrical pipes of constant diameter, the fluid under consideration being heated (or cooled) by a constant and uniform heat input at the wall. In the analysis, the similarity theory between heat and momentum transfer is
P. S. Lykoudis, Y. S. Touloukian
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Metal transfer instability in gas metal arc welding
Science and Technology of Welding and Joining, 2009This work presents a simplified model of metal transfer in gas metal arc welding. The model incorporates key features of metal transfer including the change in droplet diameters as welding moves from the globular into the spray metal transfer region, and the increase in welding voltage that is observed to occur as the pendant droplet grows.
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Metallic transfer between sliding metals: an autoradiographic study
Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1951This paper describes a study of the friction and metallic transfer between sliding metal surfaces in the absence and in the presence of boundary lubricant films. One surface is made radioactive and is slid over the surface of a second, non-radioactive metal, the amount of metal transferred being detected by the blackening of a photographic plate placed
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Transforming heat transfer with thermal metamaterials and devices
Nature Reviews Materials, 2021Ying Li, Wei Li, Tiancheng Han
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Horizontal gene transfer and adaptive evolution in bacteria
Nature Reviews Microbiology, 2021Brian J Arnold, William P Hanage
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