Influences of Duty Ratio on Structure and Corrosion Resistance of Ceramic Coatings on Ti-6Al-4V by Micro-Plasma Oxidation

Hong Qi Ben; Zhong Ping Yao; Zhao Hua Jiang

doi:10.4028/www.scientific.net/KEM.336-338.2454

Paper Titles

Lower and Upper Bounds of Mechanical and Thermal Properties of Ceramic/Metal Composites
p.2440

Fracture Enhancement of Mixed Mode I-II Transformation Toughened Ceramics
p.2444

Crack Healing, Reopening and Thermal Expansion Behavior of Al₂TiO₅ Ceramics at High Temperature
p.2448

Corrosion Resistance of the Ceramic Coating Formed by Micro-Plasma Arc Oxidation on AZ91D Alloy
p.2451

Influences of Duty Ratio on Structure and Corrosion Resistance of Ceramic Coatings on Ti-6Al-4V by Micro-Plasma Oxidation
p.2454

Preparation and Wet Erosive Wear Characteristics of Porous Al₂O₃ Ceramics
p.2458

Erosive Wear Performance and Mechanism of Engineering Ceramic Materials
p.2462

Erosion Wear Characteristics and Mechanism of Si₃N₄ Ceramics: Effect of Impact Angle
p.2465

Effect of Testing Parameters on Wear Properties of Alumina Strengthen 3Y-TZP Ceramics
p.2468

HomeKey Engineering MaterialsKey Engineering Materials Vols. 336-338Influences of Duty Ratio on Structure and...

Influences of Duty Ratio on Structure and Corrosion Resistance of Ceramic Coatings on Ti-6Al-4V by Micro-Plasma Oxidation

Abstract:

Duty ratio is a key factor during micro-plasma oxidation process. Its influences on structure and corrosion resistance of ceramic coatings on Ti–6Al–4V by pulsed bi-polar MPO in NaAlO2 solution were investigated. The ceramic coatings were composed of Al2TiO5, α-Al2O3 and rutile TiO2, of which Al2TiO5 was the main crystalline. The coating can be divided into a porous outer layer and a dense inner layer. Compared with the condition of the same duty ratio for both pulses, the rise of anode duty ratio (D1) led to an increase in the amount of Al2TiO5 and α-Al2O3 and increased the thickness of the coating; whereas the rise of cathode duty ratio (D2) led to a decrease in the amount of α-Al2O3 and decreased the thickness of the coating. Besides, the corrosion resistance of the coated samples was better than that of Ti-6Al-4V substrate. When D1 / D2 = 60 / 30, the produced coating’s corrosion resistance was best.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

2454-2457

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.2454

Citation:

Cite this paper

Online since:

April 2007

Authors:

Hong Qi Ben, Zhong Ping Yao, Zhao Hua Jiang

Keywords:

Ceramic Coating, Corrosion Resistance, Micro-Plasma Oxidation, Ti₆Al₄V Alloy

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] A.L. Yerokhin, X. Nie, A. Leyland, et al.: Surf. Coat. Technol. Vol. 122 (1999), p.73.

Google Scholar

[2] A.L. Yerokhin, X. Nie, A. Leyland and A. Matthews: Surf. Coat. Technol. Vol. 130 (2000), p.195.

Google Scholar

[3] Z.P. Yao, Z.H. Jiang, X.T. Sun, et al.: Electrochimica Acta Vol. 16-17 (2005), p.3273.

Google Scholar

[4] G. Sundrarajan, L. Rama Krishna: Surf. Coat. Technol. Vol. 167 (2003), p.269.

Google Scholar

[5] D. L. Boguta, V. S. Rudnev, and P. S. Gordienko: Protection of Metals Vol. 40 (2004), p.275.

Google Scholar

[6] Z.P. Yao, Z.H. Jiang, X.T. Sun, S.G. Xin and Y.P. Li: Thin Solid Film Vol. 468 (2004), p.120.

Google Scholar

[7] Z.P. Yao, Z.H. Jiang, X.T. Sun, S.G. Xin and Z.D. Wu: Mater. Chem. Phys. Vol. 92 (2005), p.408.

Google Scholar