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Study of TLP Bonding of Al/SiC Composite Using Coated Interlayer

Goodarzi, Shahin | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46900 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Ekrami, Ali Akbar; Seyyed Reihani, Morteza
  7. Abstract:
  8. TLP diffusion bonding method refers to a method in which two metal pieces can be bonded by putting an interlayer between two pieces and heating to a temperature lower than base metal melting point. Theoretically, this process shows that the bonding line disappears completely at the end of the process and it is not possible to recognize it. However, these assumptions were not accomplished in practice. Therefore, various parameters such as material of interlayer, thickness of interlayer, temperature and time of bonding, temperature and time of homogenizing and applied pressure on metal pieces should be controlled to achieve the best shearing strength results. Aluminum based composites have always been attractive due to their low weight and other unique mechanical properties. The purpose of this project is to study Al6061/SiC composite bonding using coated interlayer. In this method, copper was chosen to be coated on pieces. First, various bathes were evaluated to achieve a proper coating. By selecting the best coating, bonding circumstances such as bonding and homogenizing temperatures are examined. Light and electron microscopes are used to examine the bonding line microstructure and shear strength and hardness tests are conducted to study the mechanical properties of the bonding. During this project, it was found that the use of Flaubert copper bath for coating and TLP process will lead to a weak bonding. Best bath condition for coating was the acid bath with cyanide strike and the best bonding properties was observed in 580 ° C with argon atmosphere
  9. Keywords:
  10. Aluminum Matrix Composite ; Transient Liquid Phase (TLP) ; Bonding ; Al6061/SiCp composite ; Coated Inter Layer

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