Format:
Illustrationen, Diagramme
ISSN:
1873-619X
Content:
Dopants are regularly used in sol-gel and powder metallurgy routes, however, the controlled insertion of such is quite challenging, especially in the case of nanostructures. Here we investigate the use of atomic layer deposition (ALD) as a potential technique to precisely introduce aluminum oxide as dopant or second phase into zirconia 3D macroporous nanostructures. The results show that the introduction of high Al O contents into the zirconia nanostructures successfully inhibited sintering when in comparison to undoped zirconia. Moreover, for the multi-nanolaminated and full-mix structures, the tetragonal phase was stabilized up to 1200 °C. Furthermore, the structures presented a photonic band gap even after heat treatment at 1200 °C for 2 h, enabling its application as inverse opal photonic crystals in high-temperature environments. The enhancement of thermal stability and high-temperature tetragonal phase stabilization is enabled jointly by the nanostructuring and homogeneous distribution of aluminum oxide provided by ALD super-cycles. 2 3
Note:
Sonstige Körperschaft: Technische Universität Hamburg
,
Sonstige Körperschaft: Technische Universität Hamburg, Institut für Keramische Hochleistungswerkstoffe
,
Sonstige Körperschaft: Technische Universität Hamburg, Betriebseinheit Elektronenmikroskopie BEEM
,
Sonstige Körperschaft: Technische Universität Hamburg, Institut für Optische und Elektronische Materialien
,
Sonstige Körperschaft: Technische Universität Hamburg, SFB 986 Maßgeschneiderte Multiskalige Materialsysteme M3
In:
European Ceramic Society, Journal of the European Ceramic Society, Amsterdam [u.a.] : Elsevier Science, 1989, 41(2021), 7, Seite 4302-4312, 1873-619X
In:
volume:41
In:
year:2021
In:
number:7
In:
pages:4302-4312
Language:
English
DOI:
10.1016/j.jeurceramsoc.2021.02.007
URN:
urn:nbn:de:gbv:830-882.0133127
URL:
https://doi.org/10.1016/j.jeurceramsoc.2021.02.007
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