Physical chemistry of ceramic-metal interface formation

Abstract

The formation and microstructure of the interface in ceramic-metal systems is discussed. Surface phenomena control wetting in non reactive systems as well as the transitions from non reactive to reactive systems. For reactive systems phase diagrams predict the final equilibrium state. However, the intermediate stage, during which the diffusion path is built up and exists as a series of steady states, is controlled by diffusion kinetics, which are taken into account to understand the details of the morphology of the reaction zone observed in various SiC-metal systems.

セラミック-金属系の界面の微細構造形成を考察した。表面現象は非反応系での濡れ、および非反応系から反応系への転移を制御する。反応系状態図は最終的な平衡状態を予測する。拡散経路が形成されて一連の安定状態が形成する時の中間過程は、拡散速度によって制御される。この拡散速度はいろいろなSiC-金属系で観察される反応帯の詳細な組織の解明に利用される。