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Pressureless sintering of ZrO2-ZrSiO4/NiCr functionally graded materials with a shrinkage matching process

Titelangaben

Wu, Kangjian ; Scheler, Sven ; Park, Ho-Seon ; Willert-Porada, Monika:
Pressureless sintering of ZrO2-ZrSiO4/NiCr functionally graded materials with a shrinkage matching process.
In: Journal of the European Ceramic Society. Bd. 33 (Juni 2013) Heft 6 . - S. 1111-1121.
ISSN 0955-2219
DOI: https://doi.org/10.1016/j.jeurceramsoc.2012.11.026

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

Shrinkage matching was applied as the basic concept for the processing of five-layered ZrO<sub>2</sub>-ZrSiO<sub>4</sub>/NiCr functionally graded materials (FGMs) by pressureless sintering. Shrinkage behavior of the constituent layers of FGM was matched based on the strategy of reducing the mismatches of shrinkage rate between the adjacent layers by a systematic adjustment of the ZrSiO4 inclusion content and the particle size of ZrO2 matrix. Before shrinkage matching, sintering defects such as warping towards the ceramic-rich side of FGM and cracking in the 100 vol% ceramic layer were generated, due to the relatively high mismatches of shrinkage rate between the ceramic- and the metal-rich sides and at the interface of 100 and 75 vol% ceramic layers, respectively. After shrinkage matching, FGMs without any sintering defects were obtained, whereas the green bodies warped towards the metal-rich side already before sintering, due to the relatively higher shrinkage of the metal-rich side during isostatic pressing.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Functionally graded materials; Pressureless sintering; Shrinkage behavior; Sintering defects
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Keramische Werkstoffe
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Werkstoffverarbeitung
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Forschungseinrichtungen > Forschungszentren > Bayreuther Materialzentrum - BayMAT
Profilfelder > Advanced Fields > Neue Materialien
Profilfelder
Profilfelder > Advanced Fields
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 13 Feb 2015 16:07
Letzte Änderung: 26 Nov 2015 10:13
URI: https://eref.uni-bayreuth.de/id/eprint/6729