Freeform fabrication of Ti{sub}3SiC{sub}2 powder-based structures - Part I: integrated fabrication process

摘要

Ti{sub}3SiC{sub}2 carbide represents a new class of ceramics with unique electrical and mechanical properties. This paper presents a development of using three-stage fabrication process, i.e., three-dimensional layered printing, cold isostatic pressing, and sintering processing to freeform fabrication of three-dimensional Ti{sub}3SiC{sub}2 structures with complex geometry and high density. The three-stage fabrication process and their integration are described. Results of different processes and their effects on the geometric shrinkage and structural density of fabricated Ti{sub}3SiC{sub}2 components are presented and compared. Current studies reveal that the developed three-stage process was capable of fabricating fully dense (density > 99%) structures with complex geometries based on pre-coated Ti{sub}3SiC{sub}2 powder.