An Effective Approach to Improve the Oxidation Resistance of Ti-6Al-4V Alloy by Combination of Phosphorization and Silica Coating

Chun Xiang Gao

doi:10.4028/www.scientific.net/AMM.148-149.534

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 148-149An Effective Approach to Improve the Oxidation...

An Effective Approach to Improve the Oxidation Resistance of Ti-6Al-4V Alloy by Combination of Phosphorization and Silica Coating

Abstract:

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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Periodical:

Applied Mechanics and Materials (Volumes 148-149)

Pages:

534-537

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.148-149.534

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Online since:

December 2011

Authors:

Chun Xiang Gao

Keywords:

Oxidation Resistance, Phosphorization, Sol-Gel Derived Silica Coating, Ti6Al4V

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