Compilation and evaluation of the pressure-assisted master sintering surface for low-temperature cofired ceramics
- Pressure-assisted sintering (PAS) is an established procedure for the production of low-temperature cofired ceramics (LTCC) without lateral shrinkage and minimal shrinkage tolerances for automotive and high-frequency applications. To develop a feasible model for the prediction of densification during that process, master sintering curves (MSCs) for the commercial LTCC DP951 were generated from thermomechanical analysis (TMA) data in the pressure regime from 2 to 500 kPa. Strain mainly related to creep deformation of the LTCC was identified by evaluation of the strain rate and was discarded for the determination of MSC parameters. It was found that no creep occurred at any pressure up to a relative density of 0.9. Different pressure levels can be modeled with the same activation energy of 400 kJ/mol. Densification curves predicted by the model were in good agreement with experimental data. Based on MSCs, the pressure-assisted master sintering surface was compiled to illustrate thePressure-assisted sintering (PAS) is an established procedure for the production of low-temperature cofired ceramics (LTCC) without lateral shrinkage and minimal shrinkage tolerances for automotive and high-frequency applications. To develop a feasible model for the prediction of densification during that process, master sintering curves (MSCs) for the commercial LTCC DP951 were generated from thermomechanical analysis (TMA) data in the pressure regime from 2 to 500 kPa. Strain mainly related to creep deformation of the LTCC was identified by evaluation of the strain rate and was discarded for the determination of MSC parameters. It was found that no creep occurred at any pressure up to a relative density of 0.9. Different pressure levels can be modeled with the same activation energy of 400 kJ/mol. Densification curves predicted by the model were in good agreement with experimental data. Based on MSCs, the pressure-assisted master sintering surface was compiled to illustrate the influence of pressure on densification. The results show that the MSC approach is a suitable method to feasibly predict the densification of LTCC during PAS.…
Autor*innen: | Björn MiellerORCiD, Torsten Rabe |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Journal of the American ceramic society |
Jahr der Erstveröffentlichung: | 2015 |
Herausgeber (Institution): | American Ceramic Society |
Verlag: | Blackwell Publishing |
Verlagsort: | Malden |
Jahrgang/Band: | 98 |
Ausgabe/Heft: | 11 |
Erste Seite: | 3503 |
Letzte Seite: | 3508 |
Freie Schlagwörter: | Activation energy; DP951; LTCC; Low temperature co-fired ceramics; Master sintering curve |
DOI: | 10.1111/jace.13732 |
ISSN: | 0002-7820 |
ISSN: | 1551-2916 |
Bemerkung: | Geburtsname von Mieller, Björn: Brandt, B. - Birth name of Mieller, Björn: Brandt, B. |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 12.11.2015 |