Preparation of Potential Protonic Conductor Yttria Doped Hafnia by Using the Modified Solid State Reaction Method
2014 (English)In: ECS Transactions, 2014, Vol. 59 (1), 315-320 p.Conference paper (Refereed)
A pure and well crystalized yttrium doped hafnium oxide Hf0.69Y0.31O2-δ (YSH) is obtained by using a modified solid state reaction method, where a water-based milling medium and freeze drying are implemented to reduce the agglomeration. The mean sizes of the YSH powder, which is obtained through a traditional alcohol-based milling method, is more than 1 um. However, the powder size can be reduced to 100 nm by using the water-based milling method. In addition, the calcination temperature can be lowered 200 °C to get a pure phase by using the water-based milling method, compared to the alcohol-based milling method. The relative density of YSH ceramic materials can reach to 97.5% by conventional sintering at 1650 °C after during 10 h.
Place, publisher, year, edition, pages
2014. Vol. 59 (1), 315-320 p.
Research subject Materials Science and Engineering
IdentifiersURN: urn:nbn:se:kth:diva-165066DOI: 10.1149/05901.0315ecstScopusID: 2-s2.0-84920598101OAI: oai:DiVA.org:kth-165066DiVA: diva2:807033
2014 Electrochemical Conference on Energy & the Environment (ECEE2014)
QC 201504222015-04-222015-04-222015-04-23Bibliographically approved