Effect of carbon content on the oxidation behaviour of FeCrAlY alloys in the temperature range 1200–1300°C

2005 ◽  
Vol 22 (3-4) ◽  
pp. 461-466 ◽  
Author(s):  
V. Kochubey ◽  
H. Al Badairy ◽  
J. Le Coze ◽  
D. Naumenko ◽  
G.J. Tatlock ◽  
...  
Keyword(s):  
Carbon Content ◽  
Oxidation Behaviour ◽  
Temperature Range

Effect of carbon content on the oxidation behaviour of FeCrAlY alloys in the temperature range 1200–1300°C

2005 ◽  
Vol 22 (3) ◽  
pp. 461-466 ◽  
Author(s):  
V. Kochubey ◽  
H. Al Badairy ◽  
J. Le Coze ◽  
D. Naumenko ◽  
G.J. Tatlock ◽  
...  
Keyword(s):  
Carbon Content ◽  
Oxidation Behaviour ◽  
Temperature Range

Isothermal Oxidation Behavior of a New Directionally Solidified Ni-Base Superalloy in Air at Different Temperature

2010 ◽  
Vol 654-656 ◽  
pp. 538-541
Author(s):  
Lei Wang ◽  
Yan Huang ◽  
Zhuo Zhao ◽  
Yang Liu ◽  
Jian Tao Wu ◽  
...  
Keyword(s):  
Oxidation Resistance ◽  
Oxidation Behavior ◽  
Isothermal Oxidation ◽  
Oxidation Behaviour ◽  
Diffusion Activation Energy ◽  
Directionally Solidified ◽  
Temperature Range ◽  
Parabolic Law ◽  
Diffusion Activation ◽  
Base Superalloy

The isothermal oxidation behaviour under static atmosphere of a new directionally solidified Ni-base superalloy was investigated. The results showed that the oxidation kinetics curves of the alloy follow parabolic law in the temperature range of 750-950°C. The diffusion activation energy Q is to be about 244.86 kJ•mol-1 and the oxidation within this temperature range is mainly controlled by Cr3+ diffusion among Cr2O3 oxidation film. The oxidation resistance grade of the alloy is perfect anti-oxidation within 750-850°C, and anti-oxidation within 900-950°C. The oxidation film can be divided into TiO2, Cr2O3+TiTaO4+NiCr2O4, Al2O3 and TiN layers, from the surface to inside. Priority oxidation and the inside oxidation of Al are considered with the oxidation of Ti and the depletion of Cr, and it is the key point for the improving of oxidation resistance.

Effect of gas flow rate on oxidation behaviour of alloy 625 in wet air in the temperature range 900-1000 °C

2016 ◽  
Vol 68 (2) ◽  
pp. 159-170 ◽  
Author(s):  
P. Huczkowski ◽  
W. Lehnert ◽  
H.-H. Angermann ◽  
A. Chyrkin ◽  
R. Pillai ◽  
...  
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Oxidation Behaviour ◽  
Gas Flow Rate ◽  
Alloy 625 ◽  
Temperature Range

Oxidation behaviour of a (Mo, W)Si2-based composite in dry and wet oxygen atmospheres in the temperature range 350–950°C

2009 ◽  
Vol 29 (10) ◽  
pp. 2105-2118 ◽  
Author(s):  
K. Hellström ◽  
J.E. Tang ◽  
T. Jonsson ◽  
M. Halvarsson ◽  
R. Pompe ◽  
...  
Keyword(s):  
Oxidation Behaviour ◽  
Temperature Range

Harmfulness Assessment of Resins Used as Lustrous Carbon Carriers in Bentonite Moulding Sands

2013 ◽  
Vol 58 (3) ◽  
pp. 817-822
Author(s):  
M. Holtzer ◽  
S. Żymankowska-Kumon ◽  
M. Kubecki ◽  
D. Kwaśniewska-Królikowska
Keyword(s):  
Critical Temperature ◽  
Carbon Content ◽  
Coal Dust ◽  
Argon Atmosphere ◽  
Temperature Range

Abstract The assessment of harmfulness of two resins applied as a partial substitute of coal dust in moulding sands with bentonite - was performed in the paper. The emission value of compounds from the PAH and BTEX groups was assumed as the main harmfulness criterion. Also mixtures of the Kormix type prepared with additions of these resins were tested. Experiments were carried out in an argon atmosphere in a temperature range: 500-1300°. The obtained emission values of these substances were recalculated for 1% of lustrous carbon content in each carrier. It was assumed in the calculations, that the NW 1 and NW 2 carriers contain approximately 55% of lustrous carbon while the Kormix mixture approximately 15%. The critical temperature of forming compounds of the PAH group for the NW 1 carrier is 900°, while for the NW 2 carrier is 1100° (this is a temperature, at which the emission abruptly increases). In case of formation of compounds from the BTEX group the critical temperature for both lustrous carbon carriers is a temperature of 900°.

Oxidation behaviour of a MoSi2-based composite in different atmospheres in the low temperature range (400–550 °C)

2004 ◽  
Vol 24 (13) ◽  
pp. 3559-3573 ◽  
Author(s):  
K. Hansson ◽  
M. Halvarsson ◽  
J.E. Tang ◽  
R. Pompe ◽  
M. Sundberg ◽  
...  
Keyword(s):  
Low Temperature ◽  
Oxidation Behaviour ◽  
Temperature Range
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