Influence of nano-ceria sol-gel coating on oxidation behavior of chromium at 1000 °C

A very effective approach to improve the oxidation resistance of Ti-6Al-4V alloy was proposed. The Ti-6Al-4V alloy was firstly phosphated and then coated by silica using sol-gel dip-coating technique. A duplex layer of TiP2O7 and amorphous silica was synthesized at the alloy surface. The isothermal and cyclic oxidation behavior of the treated alloy with silica coating and the corresponding bare alloy was investigated at 600 oC in static air to investigate the synergetic effect of phosphorization and amorphous SiO2 coating on the oxidation resistance of the alloy. The isothermal and cyclic oxidation resistances of the alloy were greatly improved.

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Oxidation Behavior of β-Sialon Ultrafine Powders Prepared by the Combined Sol-Gel and Microwave Carbothermal Reduction Nitridation Method

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.281.34 ◽

2018 ◽

Vol 281 ◽

pp. 34-39

Author(s):

Fa Liang Li ◽

Fang Fu ◽

Li Lin Lu ◽

Hai Jun Zhang ◽

Shao Wei Zhang

Keyword(s):

Activation Energy ◽

Carbothermal Reduction ◽

Oxidation Behavior ◽

Oxidation Process ◽

Sol Gel ◽

Probable Mechanism ◽

Ultrafine Powders ◽

Isothermal Thermogravimetry ◽

Temperature Range ◽

Mechanism Function

Ultrafine powders of β-Sialon were prepared by the combined sol-gel and microwave carbothermal reduction nitridation method, and their oxidation process was studied by a non-isothermal thermogravimetry method. The results indicated that two different mechanism functions respectively corresponded to the initial and final oxidation stages. The reverse Jander equation with activation energy of 240.5 kJ/mol and the Avrami-Erofeev equation with activation energy of 410.7 kJ/mol were respectively identified as the most probable mechanism function for the initial and final oxidation stages in the temperature range of 1423-1623 K.

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Influence of Sol-gel Derived Al2O3 Film on the Oxidation Behavior of Ni

High Temperature Materials and Processes ◽

10.1515/htmp.2007.26.5-6.371 ◽

2007 ◽

Vol 26 (5-6) ◽

Author(s):

X. J. Zhang ◽

Q. Li ◽

S. Y. Zhao ◽

C. X. Gao ◽

S. J. Wang ◽

...

Keyword(s):

Oxidation Behavior ◽

Sol Gel ◽

Al2o3 Film

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In situ ZrC/Si-B-C-N monoliths prepared by sol-gel and reactive hot-pressing: Processing, microstructure, mechanical properties and oxidation behavior

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2019.151687 ◽

2019 ◽

Vol 811 ◽

pp. 151687 ◽

Cited By ~ 1

Author(s):

Zhihua Yang ◽

Daxin Li ◽

Yang Zhao ◽

Yang miao ◽

Jiancun Rao ◽

...

Keyword(s):

Mechanical Properties ◽

Hot Pressing ◽

Oxidation Behavior ◽

Sol Gel ◽

Reactive Hot Pressing

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Synergetic effect of sol–gel silica coating and physical/chemical pre-treatment on the oxidation behavior of Ti-6Al-4V alloy

Journal of Sol-Gel Science and Technology ◽

10.1007/s10971-011-2527-3 ◽

2011 ◽

Vol 59 (3) ◽

pp. 561-568 ◽

Cited By ~ 3

Author(s):

X. J. Zhang ◽

B. Y. Ren ◽

C. X. Gao

Keyword(s):

Oxidation Behavior ◽

Sol Gel ◽

Synergetic Effect ◽

Silica Coating ◽

Physical Chemical ◽

Pre Treatment

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Pre-treatment and oxidation behavior of sol–gel Co coating on 430 steel in 750°C air with thermal cycling

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2012.02.023 ◽

2012 ◽

Vol 206 (16) ◽

pp. 3495-3500 ◽

Cited By ~ 26

Author(s):

Amir Masoud Dayaghi ◽

Masoud Askari ◽

Paul Gannon

Keyword(s):

Thermal Cycling ◽

Oxidation Behavior ◽

Sol Gel ◽

Pre Treatment

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Cyclic oxidation behavior and thermal barrier effect of YSZ–(Al2O3/YAG) double-layer TBCs prepared by the composite sol–gel method

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2011.09.025 ◽

2011 ◽

Vol 206 (6) ◽

pp. 1461-1468 ◽

Cited By ~ 31

Author(s):

C. Ren ◽

Y.D. He ◽

D.R. Wang

Keyword(s):

Double Layer ◽

Cyclic Oxidation ◽

Oxidation Behavior ◽

Sol Gel ◽

Thermal Barrier ◽

Barrier Effect ◽

Gel Method ◽

Sol Gel Method

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Investigation of the Reduction/Oxidation Behavior of Cobalt Supported on Nano-ceria

Topics in Catalysis ◽

10.1007/s11244-013-0235-7 ◽

2013 ◽

Vol 57 (6-9) ◽

pp. 785-795 ◽

Cited By ~ 13

Author(s):

I. Ilgaz Soykal ◽

Hyuntae Sohn ◽

Jeffrey T. Miller ◽

Umit S. Ozkan

Keyword(s):

Oxidation Behavior ◽

Nano Ceria

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Effect of the Amorphous Silica Coating Derived by Sol-Gel Processing on the Oxidation Behavior of Ni

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.79-82.671 ◽

2009 ◽

Vol 79-82 ◽

pp. 671-674

Author(s):

B.Y. Ren ◽

Y.H. Gao ◽

S.J. Wang ◽

X.J. Zhang ◽

N.X. Feng

Keyword(s):

Thin Film ◽

Amorphous Silica ◽

Oxidation Rate ◽

Oxidation Behavior ◽

Sol Gel ◽

Silica Coating ◽

Isothermal Oxidation ◽

Dip Coating ◽

Silica Sol ◽

Gel Processing

Amorphous silica coating was deposited on the surface of Ni by dip-coating processing from commercial silica sol. Isothermal oxidation of the coated and uncoated specimens at 973 K to 1173 K in air was conducted to investigate the effect of the silica coating on the oxidation behavior of Ni by TGA, SEM and XRD. Results of the oxidation tests showed that the oxidation rate of Ni was reduced greatly due to the applied thin film. The possible mechanism of the effect of thin film on the oxidation of Ni was discussed.

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