| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Engineering Ceramics: Microstructure-Property-Performance Relations and Applications
|
| Presentation Title |
Effects of Grain Boundary Characteristics on Fracture Toughness and Dielectric Breakdown Strength of Silicon Nitride Ceramics |
| Author(s) |
Yuki Nakashima, Ryoichi Furushima, You Zhou, Kiyoshi Hirao, Tatsuki Ohji, Manabu Fukushima |
| On-Site Speaker (Planned) |
Yuki Nakashima |
| Abstract Scope |
Silicon nitride with enhanced thermal conductivity and mechanical strength holds promising potential for various practical industrial applications, especially in insulated heat-dissipating substrates for power modules. Achieving these enhanced properties necessitates precise control over both the microstructure and the composition of the grain boundary phase. In our previous study, we developed an artificial intelligence (AI) technique capable of accurately predicting each property based on the microstructure. However, the influence of grain boundary phase characteristics, which are not directly observable in the microstructure image, could introduce error into the prediction. In other words, prediction errors exceeding the AI's inherent margin would likely originate from the effects of the grain boundary phase. In this study, we indirectly evaluated the impact of the grain boundary phase, other than the microstructure effects, on fracture toughness and dielectric breakdown strength using an AI technique. |