Initial Oxidation Process of Ni-Nb Alloys at High Temperature—Application of High Energy Ion Backscattering Analysis for Oxidation at <I>P</I><SUB>O<SUB>2</SUB></SUB>=40 Pa—
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چکیده
منابع مشابه
High Temperature Oxidation Behaviour of Nimonic - 115 Alloy in Presence of Sodium Salts at 850OC
The high temperature oxidation behaviour of Nimonic-115 industrial alloy has been investigated in presence of NaNO3, Na2CO3 and Na2O2 at 850oC in flowing air. The oxidation kinetics and effect of salt deposition for the period of 48 h were studied. The scale morphologies were determined on the basis of X-ray diffraction anal...
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A series of alloys containing 24-36 wt pct Cr and 13.5 – 25.0 wt pct Al was reacted with air at 1100 °C for 260 h. The products of isothermal reaction were scales of α-Al 2 O 3 plus small amounts of Cr 2 O 3 . These grew according to parabolic kinetics, interrupted by episodic weight losses caused by partial spallation. No nitridation occurred during the isothermal exposures. Reaction during th...
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High-temperature erosion-oxidation behavior of nickel-based alloys containing 0-7 wt.% Mo in fluidized bed waste incineration conditions was studied. A stream of hot condensed air with a flow rate of 25 L/min caused hot silica sand (700 °C) mixed with 0.5 wt.% of chloride salts to hit the specimens for 250 h. By removing the erosive factor, the high-temperature oxidation behavior of the alloys ...
متن کاملInternal oxidation of Nb-Zr alloys over the range 1555-1768°C at low oxygen pressures
Three Nb alloys, containing 1 w/oZr, 2.5 w/oZr, and IOW-2.5Zr, were internally oxidized in the range of 1555 to 1768 O C at oxygen pressures ranging from 5 x to 1 x torr. Linear kinetics were measured suggesting that oxygen arrival at the surface and not oxygen diffusion in the substrate was rate controlling. Both tetragonal and monoclinic ZrOn formed, the tetragonal form being favored by high ...
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there is no doubt that human being needs to become integrated with industry and industry needs to be progressed, daily. on the other hand, serious events in industrial units specially in oil industries has been shown that such damages and events are industry related ones. the consequence of such events and damages which resulted in chemical and poisoned explosions and loss of life and property ...
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ژورنال
عنوان ژورنال: Journal of the Japan Institute of Metals and Materials
سال: 1979
ISSN: 0021-4876,1880-6880
DOI: 10.2320/jinstmet1952.43.12_1144