Effect of Ti addition on oxidation behavior of YbGdSi

2020 ◽  
Vol 2020.28 (0) ◽  
pp. 262
Author(s):  
Hiroki MORIGAYAMA ◽  
Yutaro ARAI ◽  
Ryo INOUE ◽  
Yasuo KOGO
Keyword(s):  
Oxidation Behavior ◽  
Ti Addition

scholarly journals Effect of Ti Addition on Oxidation Behavior of High-Purity Ferritic Stainless Steel

2018 ◽  
Vol 82 (5) ◽  
pp. 130-139
Author(s):  
Yoshiharu Inoue ◽  
Nobuhiko Hiraide ◽  
Atsutaka Hayashi ◽  
Kohsaku Ushioda
Keyword(s):  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
High Purity ◽  
Oxidation Behavior ◽  
Ti Addition

Effect of Ti Addition on Oxidation Behavior and Area Specific Resistance of Fe-20Cr Alloys for SOFC Interconnects

2014 ◽  
Vol 660 ◽  
pp. 249-253 ◽  
Author(s):  
Zaka Ruhma ◽  
Asep Ridwan Setiawan ◽  
Aditianto Ramelan ◽  
Rochim Suratman
Keyword(s):  
Oxidation Behavior ◽  
Specific Resistance ◽  
Parabolic Rate Constant ◽  
Xrd Analysis ◽  
Oxidation Rates ◽  
Air Atmosphere ◽  
Ti Alloys ◽  
Initial Stage ◽  
Area Specific Resistance ◽  
Ti Addition

In this work, the oxidation behavior of Fe-20wt.%Cr alloys with different titanium contents: 0, 0.5, and 1 wt.% are studied as a function of time in air atmosphere. The samples were isothermally oxidized at 700°C for 24, 48, and 96 h in a box furnace. The area specific resistance of oxides formed at the alloys surface during oxidation is measured by four-point probe methods at 700°C for 24 h. For Ti containing alloys, surface morphology observation by SEM shows that a few of TiO2 particles formed on the top of Cr2O3 scales. Continous TiO2 layer was not formed at the alloys surface after oxidation. XRD analysis on the oxide scales of Fe-20Cr-Ti alloys confirms that Cr2O3 and TiO2 oxide formed on the alloys. Ti addition into the alloys increases the oxidation rates of alloys at the initial stages. Oxidation behavior of Fe-20Cr-0.5Ti and Fe-20Cr-1Ti alloys showed two regimes. The parabolic rate constant, kp (in gr2/cm4s) were 1.57 x 10-13 and 3.08 x 10-13 respectively for initial stage of oxidation then changed to-9 x 10-15 and-3 x 10-14 respectively for the remainder of the test. ASR measurement shows that the presence of Ti in the alloys decreases the electrical resistance up to 60%. Ti addition into Fe-Cr alloys affect the oxide growth rate and increase the conductivity of Cr2O3 scales.

Improvement of the Oxidation Behavior of Yb-Gd-Si Ternary Alloys at Low Temperatures via Ti Addition

2021 ◽  
Author(s):  
Yutaro Arai ◽  
Hiroki Morigayama ◽  
Takuya Aoki ◽  
Ryo Inoue
Keyword(s):  
Thermogravimetric Analysis ◽  
Low Temperatures ◽  
Oxidation Rate ◽  
Oxidation Behavior ◽  
Ternary Alloys ◽  
Temperature Range ◽  
Arc Melting ◽  
Ti Addition ◽  
O Phase ◽  
Oxidation Behaviors

Abstract To improve the oxidation behavior of Yb-Gd-Si, 0.5 and 1 at% of Ti-containing Yb-Gd-Si (denoted as YGTS-0.5 and YGTS-1, respectively) were fabricated by arc melting. The oxidation behaviors of both YGTS specimens were evaluated by oxidation tests performed in a temperature range of 600–1200 °C for 1, 2, 4, and 8 h in air. Additionally, thermogravimetric analysis (TGA) was conducted at the abovementioned temperature range in air and steam. Oxidation tests at 1200 °C revealed no significant changes in the oxidation rate. Moreover, the oxidation tests revealed that Yb-Gd-Si and YGTS-0.5 became powdery after oxidation, whereas YGTS-1 maintained its form. Detailed microstructural observations indicated that the formation of TiO2 and other oxides in the Yb-Ti-O phase and oxide-containing Yb, Gd, Ti, and Si suppressed the formation of Yb2O3, which caused drastic oxidation at intermediate temperatures (600–900 °C). These results indicated that the addition of 1 at% of Ti to Yb-Gd-Si was effective in improving its oxidation behavior.

Influence of Ti Addition on Oxidation Behavior of Ni-Cr-W-based Superalloys

2021 ◽  
pp. 109882
Author(s):  
Jianwei Teng ◽  
Xiaojuan Gong ◽  
Biaobiao Yang ◽  
Shu Yu ◽  
Jiantao Liu ◽  
...  
Keyword(s):  
Oxidation Behavior ◽  
Ti Addition

Characterization of Microstructure, Hardness and Oxidation Behavior of Carbon Steels Hot Dipped in Al and Al–1 at% Si Molten Baths

2012 ◽  
Vol 50 (8) ◽  
pp. 575-582 ◽  
Author(s):  
Dong Bok Lee ◽  
Trinh Wan Trung ◽  
Sun Kyu Kim ◽  
Min Jung Kim ◽  
Seul Ki Kim ◽  
...  
Keyword(s):  
Oxidation Behavior ◽  
Carbon Steels

Oxidation behavior of 26Cr-16Ni and AISI 309 austenitic stainless steels in air flow at 1,173 K

2015 ◽  
Vol 57 (7-8) ◽  
pp. 597-601 ◽  
Author(s):  
Peeraya Pipatnukun ◽  
Panyawat Wangyao ◽  
Gobboon Lothongkum
Keyword(s):  
Stainless Steels ◽  
Oxidation Behavior ◽  
Air Flow ◽  
Austenitic Stainless Steels

RA602CA

Alloy Digest ◽  
2002 ◽  
Vol 51 (7) ◽  
Keyword(s):  
Cyclic Oxidation ◽  
Oxidation Behavior ◽  
Rupture Strength ◽  
Heat Treating ◽  
Creep Rupture Strength ◽  
High Carbon ◽  
High Chromium ◽  
Alloying Additions ◽  
Temperature Performance ◽  
Titanium Zirconium

Abstract RA602CA has a high creep rupture strength with alloying additions of titanium, zirconium, and high carbon. High chromium combined with aluminum and yttrium give the alloy a tight oxide scale and good cyclic oxidation behavior. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-586. Producer or source: Rolled Alloys Inc.

Sign in / Sign up

Export Citation Format

Share Document