Abstract:
A method for making essentially crack free large cross section ceramic articles by injection molding techiques comprises the use of from about 0.1 v/o to about 10 v/o fibers with the ceramic injection molding formulation followed by the injection molding, binder removal and densification steps to form an essentially crack free densified large cross section ceramic article. The fibers are softened prior to the onset of densification and incorporated into the ceramic intergranular phase. This process eliminates the component distortion during densification which would have occurred if the fibers remained in the component.
Abstract:
A method for making essentially crack free large cross section ceramic articles by injection molding techiques comprises the use of from about 0.1 v/o to about 10 v/o fibers with the ceramic injection molding formulation followed by the injection molding, binder removal and densification steps to form an essentially crack free densified large cross section ceramic article. The fibers are softened prior to the onset of densification and incorporated into the ceramic intergranular phase. This process eliminates the component distortion during densification which would have occurred if the fibers remained in the component.
Abstract:
Un procédé de production d'articles en céramique de grande section transversale essentiellement sans fissures, par des techniques de moulage par injection, consiste à utiliser de 0,1 v/o environ à 10 v/o de fibres avec la composition de moulage par injection de céramique suivie des étapes de moulage par injection, d'élimination du liant et de densification pour former un article en céramique de grande section, densifié et sans fissure. Les fibres sont assouplies avant le début de la densification et elles sont incorporées dans la phase intergranulaire céramique. Ce procédé élimine la distortion des composants pendant la densification qui se produirait si les fibres demeuraient dans le composant.