scholarly journals High Temperature Oxidation Resistance on Heat-Resistant Alloys with Small Additions of Reactive Elements.

1993 ◽  
Vol 5 (4) ◽  
pp. 110
Author(s):  
Tadaaki Amano ◽  
Kaoru Michiyama ◽  
Yasuhiko Nakajima ◽  
Nobutaka Suzuki ◽  
Hideyoshi Matsumoto ◽  
...  
Keyword(s):  
High Temperature ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
Reactive Elements ◽  
Temperature Oxidation ◽  
Heat Resistant

scholarly journals High-temperature oxidation of heat-resistant alloys with small amounts of sulfur and reactive elements (Y,Hf) for 1800ks at 1273K.

2001 ◽  
Vol 13 (1/2) ◽  
pp. 58-59
Author(s):  
Tadaaki AMANO ◽  
Megumi MIYAZAKI ◽  
Hironori SAWAFUJI ◽  
Daisuke HATAKEYAMA ◽  
Naoki SAKAI ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Reactive Elements ◽  
Temperature Oxidation ◽  
Heat Resistant

scholarly journals High Temperature Oxidation Behavior of New Martensitic Heat-Resistant Steel

2021 ◽  
Author(s):  
Ziming BAO ◽  
Renheng HAN ◽  
Yanqing ZHU ◽  
Hong LI ◽  
Ning LI ◽  
...  
Keyword(s):  
High Temperature ◽  
Oxide Film ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
Oxidation Behavior ◽  
Oxidation Mechanism ◽  
Resistant Steel ◽  
Temperature Oxidation ◽  
Heat Resistant Steel ◽  
Heat Resistant

The research focuses on the high temperature oxidation resistance of martensitic heat-resistant steel. A new type of martensitic heat-resistant steel was developed with the addition of Al and Cu, and the oxidation behavior of the new martensitic heat-resistant steel at 650 °C and 700 °C was analyzed. The high temperature oxidation kinetics curves of new martensitic heat-resistant steel at 650 °C and 700 °C were determined and plotted by cyclic oxidation experiment and discontinuous weighing method. XRD technique was applied to qualitatively analyze the surface oxide of the material after oxidation. The surface and cross-section morphology of the material were observed by field emission scanning electron microscope (SEM) and energy dispersive spectrometer (EDS), and the oxidation mechanism at high temperature was analyzed. The results show that the oxide film can be divided into two layers after oxidation at 650 ºC for 200 h. The outer oxide film is mainly composed of Fe and Cu oxides, and the inner oxide film is mainly composed of Al2O3, SiO2 and Cr2O3. After oxidation at 700 ºC for 200 h, the outer layer is mainly composed of Fe, Cu, Mn oxides, and the inner layer is mainly composed of Cr, Al and Si oxides. The addition of a small amount of Cu promotes the diffusion of Al and Si elements, facilitates the formation of Al2O3 and SiO2, and improves the high-temperature oxidation resistance of martensitic heat-resistant steel.

scholarly journals High-temperature oxidation of heat-resistant alloys with small amounts of sulfur and reactive elements (Y,Hf) for 1800ks at 1373K.

2001 ◽  
Vol 13 (1/2) ◽  
pp. 64-65 ◽  
Author(s):  
Tadaaki AMANO ◽  
Takahiro OZAWA ◽  
Keiko KUDO ◽  
Norihiro MATSUMOTO ◽  
Naoki SAKAI ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Reactive Elements ◽  
Temperature Oxidation ◽  
Heat Resistant

Limitations on the Use of Surface Doping for Improving High-Temperature Oxidation Resistance

MRS Bulletin ◽  
1994 ◽  
Vol 19 (10) ◽  
pp. 26-30 ◽  
Author(s):  
B.A. Pint
Keyword(s):  
High Temperature ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
Reactive Elements ◽  
Scale Growth ◽  
Temperature Oxidation ◽  
Scale Adhesion ◽  
Cr Concentration ◽  
Slow Growing ◽  
Standard List

For more than 50 years, scientists have studied the “magic dust” of high-temperature oxidation—certain oxygen active or “reactive” elements which, when added to alloys in small quantities, effect profound improvements in their oxidation resistance. In general, high-temperature oxidation resistance is achieved by the oxidation of one or more alloy components to form a dense, stable, slow-growing, external oxide layer, or ’scale” such as α-Cr2O3, α-Al2O3, or SiO2. When added properly, reactive elements have a beneficial effect on the formation and growth of both α-Cr2O3 and α-Al2O3 scales. A standard list of reactive element (RE) effects would include: (1) an improvement in scale adhesion or resistance to spallation, (2) a change in the scale growth mechanism, (3) a reduction in the oxidation rate, related to the change in mechanism, (4) a modification in the scale microstructure, and (5) in the case of alloys that form Cr2O3 scales, an improvement in selective oxidation, meaning that a lower Cr concentration in the alloy is required to form and maintain an external Cr2O3 scale.

scholarly journals High-temperature oxidation of Al2O3-forming heat-resistant alloys with small amounts of sulfur and reactive elements at 1373 and 1473K.

2000 ◽  
Vol 12 (1/2) ◽  
pp. 86-88
Author(s):  
Tadaaki AMANO ◽  
Kei SASAMOTO ◽  
Taizo HIRATA ◽  
Takayuki NISHINAKA ◽  
Naoki SAKAI ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Reactive Elements ◽  
Temperature Oxidation ◽  
Heat Resistant
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