Results 111 to 120 of about 90,830 (223)
Characteristics and performance of the variable polarity plasma arc welding process used in the Space Shuttle external tank [PDF]
Significant advantages of the Variable Polarity Plasma Arc (VPPA) Welding Process include faster welding, fewer repairs, less joint preparation, reduced weldment distortion, and absence of porosity.
Hung, R. J., Lee, C. C., Liu, J. W.
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Welding torch gas cup extension [PDF]
, 1988 The invention relates to a gas shielded electric arc welding torch having a detachable gas cup extension which may be of any desired configuration or length. The gas cup extension assembly is mounted on a standard electric welding torch gas cup to enable
Gordon, Stephen S.
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Role of the micro/macro structure of welds in crack nucleation and propagation in aerospace aluminum-lithium alloy [PDF]
Al-Li alloys offer the benefits of increased strength, elastic modulus and lower densities as compared to conventional aluminum alloys. Martin Marietta Laboratories has developed an Al-Li alloy designated 2195 which is designated for use in the cryogenic
Talia, George E.
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Comparative study of electrogas and shielded metal arc welding processes on steel A537 welded joints
Materials Research ExpressIn this research, the electro-gas welding process was compared with a shielded metal arc welding process for welding steel A573 from a mechanical properties point of view.
Mahmoud Abbas +3 more
doaj +1 more source
Submerged arc welding of heavy plate [PDF]
, 1972 The submerged arc process is particularly suitable for heavy plate welding because of its ability to combine very high deposit rates along with excellent quality. It does these things without the smoke and spatter often accompanying other processes.
Wilson, R. A.
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Na4Ba9MnN3: A New Subnitridometalate with Trigonal Planar Anions [MnIIIN3]6−
Zeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 4, 17 March 2026.The new subvalent nitridomanganate(III) Na4Ba9MnN3 contains structural elements known from ionic subnitridometalates as well as from intermetallic phases. In similarity to Ba3MnN3, isolated trigonal planar nitridomanganate(III) anions (MnN3)6−, coordinated by barium atoms represent the ionic region, while mixed barium‐sodium icosahedra known from ...
Lea‐Viktoria Pietsch, Constantin Hoch
wiley +1 more source
Развитие электродуговой сварки [PDF]
, 2011 Приведены исторические сведения об открытии сварочной дуги и ее применении, основоположниках и научных направлениях в развитии электродуговой сварки, а также подготовке кадров.Historical information is resulted about discovery of welding arc and its ...
Литвинов, А. П. +1 more
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Advanced Optical Materials, Volume 14, Issue 10, 13 March 2026.WISDOM, a wireless, implantable, and stretchable optogenetic platform inspired by climbing tendrils, integrates a 3D helical interconnect and customizable µ‐LEDs for precise, long‐term neuromodulation across the brain, peripheral nerves, and organs in freely behaving animals, enabling system‐level studies and therapeutic exploration of complex ...
Kuoying Qiao +9 more
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Method for defect free keyhole plasma arc welding [PDF]
, 1993 A plasma arc welding process for welding metal of increased thickness with one pass includes operating the plasma arc welding apparatus at a selected plasma gas flow rate, travel speed and arc current, to form a weld having a penetration ratio to weld ...
Fisher, Walter J. +3 more
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Advanced Energy Materials, Volume 16, Issue 9, 4 March 2026.Aqueous lithium‐ion storage has been demonstrated using a hierarchically assembled hydrogenated borophene/cobalt‐nickel compound as a supercapattery electrode. Reducible hydrogenated borophene generates undercoordinated oxygen, which is redox‐active for lithiation and hydrogenation during the discharging process following the lithium hydroxide ...
Seunghwan Jo +10 more
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