Loading...

Diffusion and solid solution formation between the binary carbides of TaC, HfC and ZrC

Ghaffari, S. A ; Sharif University of Technology | 2013

1291 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.ijrmhm.2013.03.009
  3. Publisher: 2013
  4. Abstract:
  5. In this work, phase evolution, solid solution formation and diffusion behavior of three binary systems, including TaC-HfC, TaC-ZrC and HfC-ZrC, were investigated. In this regard, pure carbide powders of TaC, HfC, and ZrC were selected as starting raw materials. The prepared samples were heat treated at 2000 C for 1 hour in Ar atmosphere. For each system, three compositions were chosen for phase evolution investigation by X-ray diffractometer. Moreover, three couple samples were prepared for diffusion behavior survey through SEM/EDX analyses. It was found that ZrC diffuses faster in TaC structure rather than HfC and a single phase solid solution phase with hosting TaC is formed in TaC-HfC and TaC-ZrC systems
  6. Keywords:
  7. Diffusion coefficient ; Dissolution rate ; Transition metal carbides ; Binary systems ; Diffusion behavior ; Dissolution rates ; Phase evolutions ; Solid solution formation ; Solid solution phase ; Transition metal carbide ; X ray diffractometers ; Carbides ; Diffusion ; Solid solutions ; Zirconium compounds
  8. Source: International Journal of Refractory Metals and Hard Materials ; Volume 41 , 2013 , Pages 180-184 ; 02634368 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0263436813000693