Přístupnostní navigace
E-přihláška
Vyhledávání Vyhledat Zavřít
Detail publikace
DRDLÍK, D. ROLEČEK, J. DRDLÍKOVÁ, K. SALAMON, D.
Originální název
Restraining of calcium contamination in near-net shape alumina ceramics during slip casting
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
The traditional method for shaping ceramics is by slip casting on gypsum molds; however, its application for near-net shaping of ceramic components is limited due to contamination by calcium ions. The focus of this study is the modification of the mold to limit Ca2+ contamination and to maintain favorable sucking properties. Cement was added to a standard gypsum mold to suppress its erosion, and a decrease in the sucking rate was observed due to its reduced macroporosity. The highest values of green densities were obtained at gypsum/cement weight ratios of 90/10 and 70/30. The microstructure analysis showed that alumina blocks prepared from the molds containing higher quantities of cement (30 or 50 wt%) were resistant to abnormal grain growth caused by Ca2+ contamination from the gypsum. The gypsum/cement mixtures for making molds for slip casting significantly limit mold erosion due to a lower sucking rate and abnormal grain growth of the slip cast samples because of the decreased diffusivity of Ca2+ ions. Therefore, the present modification of the mold renders the slip casting method more suitable for the near-net shaping of ceramics.
Klíčová slova
alumina; contamination; density; microstructure; slip casting
Autoři
DRDLÍK, D.; ROLEČEK, J.; DRDLÍKOVÁ, K.; SALAMON, D.
Vydáno
4. 6. 2018
ISSN
1744-7402
Periodikum
International Journal of Applied Ceramic Technology
Ročník
15
Číslo
6
Stát
Spojené státy americké
Strany od
1559
Strany do
1566
Strany počet
8
URL
https://onlinelibrary.wiley.com/doi/10.1111/ijac.13042
BibTex
@article{BUT150352, author="Daniel {Drdlík} and Jakub {Roleček} and Katarina {Drdlíková} and David {Salamon}", title="Restraining of calcium contamination in near-net shape alumina ceramics during slip casting", journal="International Journal of Applied Ceramic Technology", year="2018", volume="15", number="6", pages="1559--1566", doi="10.1111/ijac.13042", issn="1744-7402", url="https://onlinelibrary.wiley.com/doi/10.1111/ijac.13042" }