期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 6, 期 5, 页码 6849-6855出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b00656
关键词
ULTCC; Tape casting; Dielectric properties; Thermal conductivity; Thermal expansion
资金
- brain pool programme by KOFST [171S-2-1-1853]
- ceramic strategic technology development programme by KICET [KPP17004-1]
- National Research Foundation of Korea [171S-2-1-1853] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ultra-low-temperature co-fireable Li2WO4 substrate has been developed using an environmental friendly tape-casting technique. The nonaqueous tape-casting slurry comprised of an eco-friendly binder-solvent system consisting of polypropylene carbonate as binder and dimethyl carbonate as solvent. The structural, thermal, morphological, rheological, and electrical properties of the sintered substrate is investigated. The bulk ceramics sintered at 650 degrees C possess a relatively high thermal expansion coefficient of about 16 ppm/degrees C. The thermal conductivity of sintered tape measured at room temperature was about 2.6 W/m.K. The sintered substrate exhibits excellent microwave dielectric properties with a relative permittivity of 5.4 and a very low dielectric loss of 9.21 x 10(-5) at 5 GHz and is co-fireable with Ag electrode.
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