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Low temperature sintering of Al<subscript>2</subscript>O<subscript>3</subscript> microwave dielectric ceramics co-doped with 1.5wt%CuO-3wt%Nb<subscript>2</subscript>O<subscript>5</subscript>-0.5wt%ZrO<subscript>2</subscript>.
In: Journal of Materials Science: Materials in Electronics, Jg. 33 (2022-07-01), Heft 19, S. 15773-15778
Online
academicJournal
Zugriff:
In this paper, the sintering behavior, microstructure and microwave dielectric properties of Al 2 O 3 ceramics co-doped with 1.5wt%CuO-3wt%Nb 2 O 5 (CN) and 1.5wt%CuO-3wt%Nb 2 O 5 -0.5wt%ZrO 2 (CNZ) were systematically studied. The results show that the sintering temperature of Al 2 O 3 ceramics could be effectively decreased by adding 5 wt% CNZ. After sintered at 1000 °C for 5 h, Al 2 O 3 ceramics with high density (3.91 g/cm 3 ), uniform microstructure and good microwave dielectric properties (ε r = 9.79, Q × f = 15,541.5 GHz) could be obtained by adding 5 wt% CNZ. Higher temperature can further increase the density of the sample, but it will also lead to abnormal grain growth and decrease of Q × f value. Besides, the effect of CNZ on the low temperature densification, the changing of microstructure and dielectric properties of ceramics samples were also discussed. [ABSTRACT FROM AUTHOR]
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Titel: |
Low temperature sintering of Al<subscript>2</subscript>O<subscript>3</subscript> microwave dielectric ceramics co-doped with 1.5wt%CuO-3wt%Nb<subscript>2</subscript>O<subscript>5</subscript>-0.5wt%ZrO<subscript>2</subscript>.
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Autor/in / Beteiligte Person: | Zhang, Peng ; Tao, Honglei ; Li, Wei |
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Zeitschrift: | Journal of Materials Science: Materials in Electronics, Jg. 33 (2022-07-01), Heft 19, S. 15773-15778 |
Veröffentlichung: | 2022 |
Medientyp: | academicJournal |
ISSN: | 0957-4522 (print) |
DOI: | 10.1007/s10854-022-08479-0 |
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