Cyclic oxidation behavior and oxide scale adhesion of Al/NiCrAlY coating on pure titanium alloy

2017 ◽  
Vol 729 ◽  
pp. 679-687 ◽  
Author(s):  
Xue Gong ◽  
Ruirun Chen ◽  
Qi Wang ◽  
You Wang ◽  
Nannan Zhang ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Oxide Scale ◽  
Cyclic Oxidation ◽  
Oxidation Behavior ◽  
Pure Titanium ◽  
Scale Adhesion ◽  
Nicraly Coating

Effects of Yttrium on Cyclic Oxidation Resistance of Co-10Cr-5Al Alloy at 700 °C

2014 ◽  
Vol 528 ◽  
pp. 25-29
Author(s):  
Ling Yun Bai ◽  
Xian Chao Xu ◽  
Jun Huai Xiang ◽  
Yun Xiang Zheng ◽  
Jun Wang
Keyword(s):  
Oxide Scale ◽  
Oxidation Resistance ◽  
Oxidation Rate ◽  
Cyclic Oxidation ◽  
Oxidation Behavior ◽  
Adhesive Property ◽  
Complex Mode ◽  
Rate Law ◽  
Parabolic Rate

The cyclic oxidation behavior of Co-10Cr-5Al alloys in atmosphere at 700 °C was investigated. The addition of 0.3 at.% Y changed the oxidation behavior from the approximate parabolic rate law to complex mode. The scale grown on the surface of Co-10Cr-5Al cracked seriously, while the oxide scale the Y doped alloy had better adhesive property. Yttrium doped in the sample promoted the forming of continuous Al2O3layer and decreased the oxidation rate of Co-10Cr-5Al alloys.

Cyclic oxidation behavior of plasma surface chromising coating on titanium alloy Ti–6Al–4V

2012 ◽  
Vol 261 ◽  
pp. 800-806 ◽  
Author(s):  
Dong-Bo Wei ◽  
Ping-Ze Zhang ◽  
Zheng-Jun Yao ◽  
Jin-Tang Zhou ◽  
Xiang-Fei Wei ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Cyclic Oxidation ◽  
Oxidation Behavior ◽  
Plasma Surface

In Situ Synthesis and Oxidation Behavior of Ti-Al-Ag Ternary Coatings

2016 ◽  
Vol 849 ◽  
pp. 702-708
Author(s):  
Lei Yang ◽  
Hua Li ◽  
He Zhou Liu ◽  
Yang Yang Zhang
Keyword(s):  
Titanium Alloy ◽  
Thermal Treatment ◽  
Oxide Scale ◽  
Oxidation Resistance ◽  
Plasma Spray ◽  
Oxidation Behavior ◽  
Experimental Results ◽  
Better Than

Mixture powders with different ratio of Ag/γ-TiAl were deposited on titanium alloy by low presure plasma spray and thermal treatment was applied to convert the mixture coatings into Ti-Al-Ag ternary ones. The experimental results indicated that the oxidation resistance of ternary coatings was better than sheer γ-TiAl coating and increased with increasing Ag from 2at.% to 4at.% at 700 and 800°C. The outside oxide scale consisted of alumina and a small amount of rutile due to the insufficient diffusion of Ag in γ-TiAl.

Influence of Micro-Structure on Oxidation Behavior of a Ni-Based Superalloy at 1000°C

2008 ◽  
Vol 595-598 ◽  
pp. 87-94 ◽  
Author(s):  
Li Liu ◽  
Ying Li ◽  
Fu Hui Wang
Keyword(s):  
Oxide Scale ◽  
Oxidation Resistance ◽  
Cyclic Oxidation ◽  
Oxidation Behavior ◽  
Flat Surface ◽  
Cast Alloy ◽  
Oxidation Mechanism ◽  
Micro Structure ◽  
Al2o3 Layer ◽  
Oxidation Behaviors

The isothermal and cyclic oxidation behaviors of a Ni-based superalloy with singlecrystalline (SC), polycrystalline and nanocrystalline (NC) structures were studied at 1000°C. Results indicated that a uniform oxides scale consisted of external Cr2O3 with little TiO2 and internal continuous Al2O3 formed on SC alloy. A non-uniform external oxide of which some locations were nodule-like scale was formed on surface of cast alloy. The nodule-like parts consisted of TiO2, Cr2O3 and serious internal oxidation of Al, and rest flat surface was a Cr2O3 and Al2O3 layer. A continuous Al2O3 layer formed on the sputtered NC coating. The micro-structure influenced the oxidation mechanism and resulted in different oxide scale formed on three materials, which greatly influenced materials’ oxidation and cyclic-oxidation resistance.

The Effect of Various Oxide Dispersions on the Oxidation Resistance of Fe3Al

1994 ◽  
Vol 364 ◽  
Author(s):  
B. A. Pint ◽  
K. B. Alexander ◽  
P. F. Tortorelli
Keyword(s):  
Powder Metallurgy ◽  
Oxidation Resistance ◽  
Cyclic Oxidation ◽  
Oxidation Behavior ◽  
Base Alloy ◽  
Hot Extrusion ◽  
Powder Metallurgy Technique ◽  
Scale Adhesion ◽  
Fecral Alloy ◽  
Oxidation Testing

AbstractOxide-dispersed Fe-28at.%Al-2%Cr alloys were produced by a powder metallurgy technique followed by hot extrusion. Yttria and ceria were added to the base alloy to assess the effect of these dopants on the oxidation behavior. The amount of dopant was varied from 0.05–0.5 at.% Y in a series of Y2O2-dispersed alloys. Isothermal and cyclic oxidation testing was conducted at temperatures from 800˚ to 1300˚C. A Ce02 addition was detrimental to the oxidation behavior. The Y2O3 improved the (α-Al2O3 scale adhesion relative to an undoped alloy, but was not as effective as similar additions to an oxide-dispersed FeCrAl alloy.

Microstructure and Oxidation Behavior of Al and Al/NiCrAlY Coatings on Pure Titanium Alloy

2017 ◽  
Vol 26 (5) ◽  
pp. 846-856 ◽  
Author(s):  
Xue Gong ◽  
Nannan Zhang ◽  
Zhongli Zhang ◽  
Ruirun Chen ◽  
Danyang Lin
Keyword(s):  
Titanium Alloy ◽  
Oxidation Behavior ◽  
Pure Titanium

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