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Refractory castables for titanium metallurgy based on calcium zirconate

Title data

Schafföner, Stefan ; Qin, Ting ; Fruhstorfer, Jens ; Jahn, Constantin ; Schmidt, Gert ; Jansen, Helge ; Aneziris, Christos G.:
Refractory castables for titanium metallurgy based on calcium zirconate.
In: Materials & Design. Vol. 148 (2018) . - pp. 78-86.
ISSN 1873-4197
DOI: https://doi.org/10.1016/j.matdes.2018.03.049

Abstract in another language

Calcium zirconate (CaZrO3) is a promising refractory material to melt titanium alloys. Therefore the present study investigated refractory castables based on CaZrO3 to allow an upscaling to larger melting crucibles and refractory linings. The study first included the processing optimization of the refractory castable containing calcium aluminate cement using a full factorial experimental design. Then the physical, chemical, mechanical and thermomechanical properties that determine the practical application of the castable were analyzed. The properties were generally similar to the ones of uniaxially pressed refractories based on CaZrO3. Nevertheless, the matrix containing calcium aluminates caused a pronounced sintering shrinkage leading to a smaller apparent porosity and a lower refractoriness compared to uniaxially pressed refractories. Finally, melting crucibles with an inner volume of 900 ml were successfully manufactured. Thus, this study provides an effective framework for the further development of large CaZrO3 refractories.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Ceramic Materials
Faculties > Faculty of Engineering Science > Chair Ceramic Materials > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Stefan Schafföner
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 25 May 2023 09:29
Last Modified: 25 May 2023 09:29
URI: https://eref.uni-bayreuth.de/id/eprint/76189