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Equal-strength precision diffusion bonding of AA6063 aluminum alloy with the surface passivated by a self-assembled monolayer

  • Hao Zhang , Jing-Long Li , Chang-Sheng Wang , Jiang-Tao Xiong and Fu-Sheng Zhang
Published/Copyright: July 5, 2017
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 108 Issue 7

Abstract

Precision diffusion bonding of aluminum alloy requires good mechanical properties and very low deformation. However, oxidation lowers the quality of the joint. This paper used a self-assembled monolayer, 1-hexyl mercaptan, on the aluminum surface to prevent the secondary oxidation after pre-bonding treatment. An AA6063/Ni/AA6063 sandwich structure joint was intentionally designed and bonded to characterize the effect of the self-assembled monolayer. AA6063/AA6063 joints were diffusion bonded, in which three different pre-bonding surface treatments were used that were as-cleaned, ethanol adsorbed and self-assembled monolayer passivated. With the surface passivated by self-assembled monolayer, there were few voids at the bonding interface. Ductile fracture was observed during tensile testing. The joint had a bond ratio of 97.4% and elongation of 20.4%, which is very close to the base metal and is considered as equal-strength bonding.

Keywords: AA6063; Self-assembled monolayer; Precision diffusion bonding; Equal-strength bonding
*Correspondence address, Fu-Sheng Zhang, Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, 127 Youyi West Road, Xi'an, Shaanxi, 710072, P. R. China, Tel.: +86(029)88491426, Fax: +86(029)88491426, E-mail:

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Received: 2016-11-24
Accepted: 2017-02-10
Published Online: 2017-07-05
Published in Print: 2017-07-14

© 2017, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111515
Keywords for this article
AA6063; Self-assembled monolayer; Precision diffusion bonding; Equal-strength bonding

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. A modified parallel constitutive model for elevated temperature flow behavior of Ti-6Al-4V alloy based on multiple regression
  5. Simulation of directional solidification furnace with bottom opening insulation to grow quality mc-Si ingot for PV applications
  6. Dependence of corrosion properties of AISI 304L stainless steel on the austenite grain size
  7. Tensile behavior and microstructural evolution for AZ31 magnesium alloys sheet at high strain rate
  8. Equal-strength precision diffusion bonding of AA6063 aluminum alloy with the surface passivated by a self-assembled monolayer
  9. Effect of grain size on hydration and rheological behavior of calcium aluminate cements containing spinel
  10. Synthesis, characterization and forming behavior of hybrid copper matrix composites produced using powder metallurgy
  11. Synthesis of binary bismuth–cadmium oxide nanorods with sensitive electrochemical sensing performance
  12. Improving the productivity and purity of vaterite produced via a refined bubbling method
  13. Short Communications
  14. Microstructure of spherical particles generated in high-speed machining of an alloy steel
  15. ZnO whiskers synthesized by rapid microwave reduction reaction
  16. DGM News
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