نتایج جستجو برای: argon shielding gas
تعداد نتایج: 260806 فیلتر نتایج به سال:
Abstract Directed energy deposition is an additive manufacturing technology which usually relies on prototype machines or hybrid systems, assembled with parts from different producers. Because of this lack standardization, the optimization process parameters often a mandatory step in order to develop efficient building process. Although, preliminary phase expensive both terms time and cost. The...
A microplasma is generated in the microhole (400 μm diameter) of a molybdenum-aluminamolybdenum sandwich (MHCD type) at medium pressure (30-200 Torr) in pure argon. Imaging and emission spectroscopy have been used to study the light emission mechanisms in the microdischarge. We find that emission intensities of both argon atom and argon ion lines present sharp peaks located near the cathode, an...
[1] The impacts of the seasonal evolution of sea-ice physical properties on ice-ocean biogeochemical exchanges were investigated in landfast ice at Barrow (Alaska) from January through June 2009. Three stages of brine dynamics across the annual cycle have been identified based on brine salinity, brine volume fraction, and porous medium Rayleigh number (Ra). These are sea-ice bottom-layer convec...
The excitation and propagation of solitary waves is studied experimentally in a two-dimensional strongly coupled dusty complex plasma. A single layer with 5000 microspheres 8 m diam was suspended in an argon plasma with a neutral gas pressure of 3.0 mTorr. The measured Debye shielding parameter was 1.6, where =a / is the ratio of the lattice constant a to the Debye length . Nonlinear, planar lo...
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