Paper Title:
Preparation of Ceramic Composite Coatings on Ti-6Al-4V Alloy by Surface Nanocrystallization/Micro-Arc Oxidation
  Abstract

Nanostructured surface layer was produced on the Ti-6Al-4V alloy by surface mechanical attrition treatment (SMAT) technique, and then the ceramic composite coatings of surface nanocrystallization/ micro-arc oxidation (SNC/MAO) were prepared on the nanocrystallized surface of Ti-6Al-4V alloy by pulsed single-polar micro-arc oxidation in NaAlO2 solution. The phase composition, morphology of surface and section and element content of the nanostructured surface layer and the ceramic coatings were investigated by XRD, TEM, SEM and EDS, respectively. The results showed that after the SMAT technique treatment for a short period of time, the surface layer was refined into ultrafine grains. The thickness of the coatings on the substrate treated by SMAT technique is about 10μm by micro-arc oxidation, which is thicker than the ones on the substrate untreated by SMAT technique, and the ceramic coatings are mainly composed of Al2TiO5. Besides, a bright interface layer comes out between the substrate and the coating when the substrate treated by SMAT technique. The influences of the SMAT technique on the surface morphology of the ceramic coatings also changed. The coatings using the SMAT technique were more compact and less porous than the ones on the substrate untreated by SMAT technique. The content of elements in the nanostructured surface layer on Ti-6Al-4V alloy had changed after the SMAT technique: the content of Ti increased, the content of V decreased, and the content of Al changed a little. The contents of Al and P in the coating increased while the content of Ti decreased.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
1322-1324
DOI
10.4028/www.scientific.net/KEM.368-372.1322
Citation
G. D. Hao, Y. L. Guo, X. M. Zhang, G. Liu, Z. H. Jiang, "Preparation of Ceramic Composite Coatings on Ti-6Al-4V Alloy by Surface Nanocrystallization/Micro-Arc Oxidation", Key Engineering Materials, Vols. 368-372, pp. 1322-1324, 2008
Online since
February 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Guo Dong Hao, Yong Liang Guo, Gang Liu, Xin Mei Zhang
Abstract:Nanostructured surface layer was produced on Ti-6Al-4V alloy by surface mechanical attrition treatment (SMAT) technique, and the composite...
67
Authors: Ming Zhu, Mei Shuan Li
Abstract:Cr-Al-N coatings were deposited on the surface of the (111) single silicon for the aim to study the thermal stability of this kind of...
249
Authors: Xian Hui Li, Yu Jun Xue, De Ying Zhang, Ji Shun Li
Chapter 3: Advanced Manufacturing Technology
Abstract:The Ni-Nd2O3 nanocomposite coatings were prepared by electrodeposition with different modes of ultrasound action. The...
280
Authors: Jin Xue Zhang
Chapter 2: Engineering Ceramics and Ceramic Composites
Abstract:Compound ceramic coatings with the main crystal phase of Al2TiO5 (as-coated samples) were prepared in situ on the surface of Ti-6Al-4V alloy...
1066
Authors: Shun Qi Zheng, Xiao Jing Li, Li Ping Zhu, Yun Chen, Jian Min Luo
Chapter 1: Alloy and Nanometer Materials
Abstract:Micro-arc oxidation (MAO) coatings were synthesized on MB3 magnesium alloy substrate. Two different electrolyte (Ⅰ) and electrolyte (Ⅱ) were...
54