About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
|
Presentation Title |
Additive Manufacturing of Alumina Toughened Zirconia and Zirconia Toughened Alumina |
Author(s) |
Nicholas Voellm, Shawn Allan, Ryan Fordham, Nicole Ross |
On-Site Speaker (Planned) |
Nicholas Voellm |
Abstract Scope |
Composites of alumina and zirconia have properties that can meet the needs of high performance engineering applications, including strength, toughness, and wear resistance. Known as ATZ (alumina toughened zirconia) or ZTA (zirconia toughened alumina), depending on the relative proportions of each, these composites often exhibit the most desirable properties of each material and in some cases exceed them. ATZ in particular can achieve similar strength to high quality steels, while having much higher temperature and wear resistance, after undergoing a thermal post process known as hot isostatic pressing (HIP). Combinations of alumina-zirconia have been developed into photocurable slurries that are printable using Lithography-based Ceramic Manufacturing (LCM). Subsequent debinding and sintering results in a finished ceramic part. This study evaluates the strength, density, and microscopy of samples of ZTA and ATZ printed parts, as well as ATZ that has been HIPed, aiming to determine whether this forming method preserves expected properties. |