Loading...

Investigating the Joining between Silicon Carbide and Aluminum Oxide Using Separate Metal Layers

Ahadi Dolatsara, Reza | 2023

48 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 56188 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Nemati, Ali
  7. Abstract:
  8. Sometimes, some ceramics and metals cannot be produced in an integrated manner; In addition, ceramics, like metals, do not fully benefit from the properties of melting and casting; Therefore, it is necessary to produce this group of parts with other methods such as joining to each other. By using joining methods and technologies, it is possible to make composite materials; Therefore, in this way, the applications of ceramic or metal composites have been increasingly expanded. In many researches, bonding of oxide ceramics such as aluminum oxide to itself as well as carbide ceramics such as silicon carbide to itself have been investigated. In this research, the bonding mechanisms of two types of ceramics made of silicon carbide (SiC) and aluminum oxide (Al2O3) using a metal layer of copper and nickel separately and alloyed have been investigated. The method used in this research is the solid state diffusion bondin process, which in addition to the type of process, other factors such as the type of metal, furnace atmosphere, and connection conditions, all have an effect on the results. Finally, in the manufactured samples, the bonding mechanism, microstructure, the amount of adhesion in the joint and mechanical properties have been investigated using different analysis methods. According to the obtained results, it can be concluded that the possibility of this connection is available for both types of metals (copper and nickel) and under the influence of pressure, temperature and the amount of vacuum created in the atmosphere of the furnace, the strength of this connection can be changed. The reason for conducting this research is to investigate the possibility of repairing silicon carbide furnace elements using metal layer and aluminum oxide ceramic structure. Both copper and nickel metals have high thermal and electrical conductivity; However, the aluminum oxide layer is insulating, and to create thermal and electrical conductivity corresponding to silicon carbide, the method of doping conductive particles, such as carbon nanotubes (CNT), into the aluminum oxide structure should be used
  9. Keywords:
  10. Metal-Ceramic Joint ; Metallization ; Solid State Diffusion ; Oxide Ceramics ; Silicon Carbide ; Aluminum Oxides

 Digital Object List

 Bookmark

No TOC