About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
2025 Graduate Student Poster Contest
|
| Presentation Title |
SPG-11: Continuum Sintering Models to Predict the Constitutive Parameters for Isotropic Sintering of Ceramics |
| Author(s) |
Deeksha Kodangal, Rajendra Bordia, Elisa Torresani |
| On-Site Speaker (Planned) |
Deeksha Kodangal |
| Abstract Scope |
In this poster, we present experimentally obtained densification kinetics and constitutive parameters of slip cast ceramics under a broad range of thermal treatments. A 45 vol% Alumina slurry was prepared in DI water and cylindrical samples were made by slip casting. The densification kinetics were obtained using dilatometry, which was also used to extract the constitutive parameters for isotropic sintering models. In the continuum models of sintering, three constitutive parameters are needed: free strain rate ϵ ̇_f , uniaxial viscosity E_p and viscous Poisson’s ratio 〖 ν〗_p. E_p and ϵ ̇_f are a function of temperature and density while 〖 ν〗_p is a function of density only. The activation energy for densification, Q, was obtained using different approaches and compared. The uniaxial viscosity and the Poisson’s ratio were calculated and compared with Scherrer and the Olevksy models. |