| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Novel Method of BiFeO<sub>3</sub> Purification by Acid Washing Determined from ICP-MS Analyses |
| Author(s) |
Jenna Metera, Anna Wilke, Olivia A. Graeve |
| On-Site Speaker (Planned) |
Jenna Metera |
| Abstract Scope |
Ceramic powders produced by hydrothermal synthesis are generally pure in terms of the target composition. However, BiFeO<sub>3</sub> produced by this method is not always pure, resulting in the presence of unwanted phases such as Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> and Bi<sub>25</sub>FeO<sub>39</sub>. Acid washing of powders generally allows for preferential dissolution of unwanted phases in the powder materials over several minutes. However, this approach has not been successfully performed with BiFeO<sub>3</sub>, therefore the main goal of this work was to evaluate different acids (HBr, HCl, H<sub>2</sub>SO<sub>4</sub>, H<sub>3</sub>PO<sub>4</sub>, H<sub>3</sub>BO<sub>3</sub>, CH<sub>3</sub>COOH, and HNO<sub>3</sub>) for this purpose. HBr was concluded to be the optimum acid, since it not only successfully preserves the surface of BiFeO<sub>3</sub> powders, but also preferentially dissolves Bi<sub>25</sub>FeO<sub>39</sub> unwanted phase in under 10 minutes (the Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> phase was not dissolved by any acid). This work moves the electroceramics industry closer to a scalable material synthesis technique for BiFeO<sub>3</sub>. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Electronic Materials, Powder Materials |