Oxidation behavior of rhenium at high temperatures

1993 ◽  
Vol 28 (12) ◽  
pp. 1565-1570 ◽  
Author(s):  
T.C. Chou ◽  
A. Joshi ◽  
C.M. Packer
Keyword(s):  
High Temperatures ◽  
Oxidation Behavior

Effect of Phase Fraction Ratio Between Al3Mg2 and Mg2Si on the Oxidation Behavior of Al–Mg–Si Alloys

2021 ◽  
Vol 16 (7) ◽  
pp. 1047-1051
Author(s):  
Seong-Ho Ha ◽  
Abdul Wahid Shah ◽  
Bong-Hwan Kim ◽  
Young-Ok Yoon ◽  
Hyun-Kyu Lim ◽  
...  
Keyword(s):  
Oxidation Resistance ◽  
High Temperatures ◽  
Cross Sections ◽  
Oxidation Behavior ◽  
Eutectic Phase ◽  
Mg Alloy ◽  
Phase Fraction ◽  
The Matrix ◽  
Si Content

The effect of the phase fraction ratio between Al3Mg2 and Mg2Si on the oxidation resistance of Al–Mg–Si alloys at high temperatures was investigated. With addition of 1 mass%Si in Al-6 mass%Mg alloy, the as-cast microstructures showed formation of Mg2Si phase by eutectic reactions. With increasing Si content more than 3 mass%, the Mg2Si and Si are formed as eutectic phases with no β-Al3Mg2 phase. In addition, with an increase in the Si content from 3 mass%, significantly refined as-cast microstructures and distribution of extended eutectic phase areas were observed. The oxidized cross-sections of Al-6 mass%Mg and Al-6 mass%Mg-1 mass%Si alloys showed coarse and dark areas, which are considered as oxide clusters, nonuniformly grown into the matrix. However, Al-6 mass%Mg-3 mass%Si and Al-6 mass%Mg-5 mass%Si alloys had no significantly grown oxide clusters on the surfaces. Based on the results, it was concluded that the reduction of the ratio between β-Al3Mg2 and Mg2Si phases can reduce the rapid oxidation of Mg.

Effect of Hf addition (0.24 w/o) on the oxidation behavior of TiAl at high temperatures

1994 ◽  
Vol 42 (3-4) ◽  
pp. 205-222 ◽  
Author(s):  
Shigeji Taniguchi ◽  
Toshio Shibata ◽  
Hiroyuki Juso ◽  
Naoki Katoh
Keyword(s):  
High Temperatures ◽  
Oxidation Behavior ◽  
Hf Addition

scholarly journals Oxidation Behavior of TiAl at High Temperatures in Purified Oxygen

1991 ◽  
Vol 32 (2) ◽  
pp. 151-156 ◽  
Author(s):  
Shigeji Taniguchi ◽  
Toshio Shibata ◽  
Satoshi Itoh
Keyword(s):  
High Temperatures ◽  
Oxidation Behavior

scholarly journals Oxidation Behavior of Intermetallic Compounds TiAl at High Temperatures

1989 ◽  
Vol 53 (1) ◽  
pp. 58-62 ◽  
Author(s):  
Kazuo Kasahara ◽  
Kenki Hashimoto ◽  
Haruo Doi ◽  
Tokuzou Tsujimoto
Keyword(s):  
Intermetallic Compounds ◽  
High Temperatures ◽  
Oxidation Behavior

The sulfidation and oxidation behavior of sputter-deposited Cr-refractory metal alloys at high temperatures

1997 ◽  
Vol 226-228 ◽  
pp. 910-914 ◽  
Author(s):  
K. Ito ◽  
H. Habazaki ◽  
H. Mitsui ◽  
E. Akiyama ◽  
A. Kawashima ◽  
...  
Keyword(s):  
High Temperatures ◽  
Refractory Metal ◽  
Oxidation Behavior ◽  
Metal Alloys ◽  
Sputter Deposited ◽  
Refractory Metal Alloys

Behavior of Fuel and Structural Materials in Severely Damaged Reactors

2014 ◽  
Vol 94 ◽  
pp. 93-96 ◽  
Author(s):  
Nobuaki Sato ◽  
Akira Krishima ◽  
Takayuki Sasaki
Keyword(s):  
Heat Treatment ◽  
Solid Solution ◽  
High Temperatures ◽  
Oxidation Behavior ◽  
Sea Water ◽  
Structural Materials ◽  
Zirconium Oxides ◽  
Solid Solution Sample ◽  
Fukushima Daiichi ◽  
Xrd Method

To study the fuel debris treatment at Fukushima Daiichi NPP, information on the behaviour of fuel and structural materials in severely damaged reactors, i.e., oxides and metals of uranium and zirconium is essential. Since sea water was introduced to the reactors, situation of fuel debris became different from that for TMI case. In this paper, phase relations of uranium and zirconium oxides were analyzed by powder XRD method at high temperatures. By the heat-treatment of the mixture of UO2 and ZrO2 (U:Zr=1:1) under 10 torr air, UO2 was oxidized to U3O8 over 800 oC, The UO2 like phase appeared again at 1350 oC which may be caused by the decomposition of U3O8. The oxidation behavior of the UO2-ZrO2 system was also investigated by using solid solution sample with different U/Zr ratios under different steam and oxygen pressures. The oxidation of the UO2-ZrO2 mixture seemed to be suppressed with decreasing U/Zr ratio. The behavior of fuel materials in the presence of seawater was also discussed as well as that for other structural materials.

scholarly journals Oxidation Behavior of TiN0.74 at High Temperatures

1989 ◽  
Vol 30 (10) ◽  
pp. 765-771 ◽  
Author(s):  
Shigeji Taniguchi ◽  
Toshio Shibata ◽  
Akira Okada
Keyword(s):  
High Temperatures ◽  
Oxidation Behavior
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