Xie, Rong-Jun ; Zuo, Ruzhong ; Aulbach, Emil ; Mackens, Uwe ; Hirosaki, Naoto ; Rödel, Jürgen (2005)
Uniaxial viscosity of low-temperature cofired ceramic (LTCC) powder compacts determined by loading dilatometry.
In: Journal of the European Ceramic Society, 25 (4)
doi: 10.1016/j.jeurceramsoc.2004.01.022
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
This paper reports on the experimental determination of the uniaxial viscosity of two commercially available low-temperature cofired ceramic (LTCC) powder compacts, Ceramtape GC (glass-ceramic) and Ferro A6M (glass), by loading dilatometry. Isothermal sintering of cylindrical green compacts was carried out at temperatures ranging from 720 to 840 °C and under varying uniaxial compressive loads of 0–50 N (corresponding to 0–0.5 MPa). Both instantaneous radial and axial strains were measured during sintering. These data were analyzed by using constitutive laws for a porous sintering body and the uniaxial viscosity was calculated as a function of relative density. The activation energy for viscosity was independent of relative density and showed an average value of 668±76 kJ/mol for the Ceramtape material but was not accessible for the Ferro material. The viscosity data were compared with several theoretical models.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2005 |
| Autor(en): | Xie, Rong-Jun ; Zuo, Ruzhong ; Aulbach, Emil ; Mackens, Uwe ; Hirosaki, Naoto ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Uniaxial viscosity of low-temperature cofired ceramic (LTCC) powder compacts determined by loading dilatometry |
| Sprache: | Englisch |
| Publikationsjahr: | April 2005 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 25 |
| (Heft-)Nummer: | 4 |
| DOI: | 10.1016/j.jeurceramsoc.2004.01.022 |
| Kurzbeschreibung (Abstract): | This paper reports on the experimental determination of the uniaxial viscosity of two commercially available low-temperature cofired ceramic (LTCC) powder compacts, Ceramtape GC (glass-ceramic) and Ferro A6M (glass), by loading dilatometry. Isothermal sintering of cylindrical green compacts was carried out at temperatures ranging from 720 to 840 °C and under varying uniaxial compressive loads of 0–50 N (corresponding to 0–0.5 MPa). Both instantaneous radial and axial strains were measured during sintering. These data were analyzed by using constitutive laws for a porous sintering body and the uniaxial viscosity was calculated as a function of relative density. The activation energy for viscosity was independent of relative density and showed an average value of 668±76 kJ/mol for the Ceramtape material but was not accessible for the Ferro material. The viscosity data were compared with several theoretical models. |
| Freie Schlagworte: | Dilatometry; Sintering; Porosity; Glass; Glass ceramics; LTCC |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 18 Mai 2011 15:19 |
| Letzte Änderung: | 05 Mär 2013 09:47 |
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