Paper Title:
Kinetic and Thermodynamic Aspects of High-Temperature Oxidation of Selected Ti-Based Alloys
  Abstract

In the presented work, high-temperature cyclic oxidation of pure Ti, Ti-7.8wt.%Si, Ti- 45.6wt.%Al and Ti-11.7wt.%Al-7.2wt.%Si alloys at 750 – 1050 °C in air were studied. It was found that both Si and Al strongly reduce the oxidation rate of titanium, mainly up to 850 °C. They incorporate into the oxide scales and reduce penetration rate of oxygen towards the metallic substrate. Mechanism of the barrier effects of the elements is discussed with respect to their distribution in alloys. It was observed by comparison of Al-containing and Si-containing alloys, that the influence of Si on the oxidation kinetics is significantly stronger. It can be supposed that a synergic effect of silicon and nitrogen is a reason for this behavior.

  Info
Periodical
Edited by
J. Čermák and I. Stloukal
Pages
123-128
DOI
10.4028/www.scientific.net/DDF.263.123
Citation
D. Vojtěch, M. Mort'aniková, P. Novák, "Kinetic and Thermodynamic Aspects of High-Temperature Oxidation of Selected Ti-Based Alloys", Defect and Diffusion Forum, Vol. 263, pp. 123-128, 2007
Online since
March 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Rabindra Mahapatra, A.W. Davis
Abstract:In this paper we report the oxidation behavior of Rh-xTi (x = 15 & 20 atomic percent) alloys isothermally exposed in air between 1000 and...
721
Authors: X.J. Zhang, Yan Niu
Abstract:Small amounts of silver have been added to the intermetallic compound β-NiAl for the purpose of improving its mechanical properties. Four...
775
Authors: Jeong Min Kim, Bong Koo Park, Joong Hwan Jun, Ki Tae Kim, Woon Jae Jung
Abstract:Small amounts of minor alloying elements such as RE and Sr were added to Mg- 8wt%Al-5wt%Zn (AZ91D+4%Zn), and their effects on the...
374
Authors: Jien Wei Yeh, Yu Liang Chen, Su Jien Lin, Swe Kai Chen
Abstract:A high-entropy alloy (HEA) has been defined by us to have at least five principal elements, each of which has an atomic concentration...
1
Authors: Lidia Lityńska-Dobrzyńska, Patrick Ochin, Anna Góral, Marek Faryna, Jan Dutkiewicz
Abstract:The effect of rapid solidification on the microstructure of Al-Zn-Mg-Cu alloys with 8 wt.% Zn-2 wt.% Mg-2.3 wt.% Cu and 0.2 or 0.5 wt.% of Zr...
42