X Ye, W Lei, W-Z Lu. Microwave dielectric characteristics of Nb2O5-added 0.9Al2O3–0.1TiO2 ceramics. Ceram Int 2009, 35: 2131–2134.
A Stiegelschmitt, A Roosen, C Ziegler, et al. Dielectric data of ceramic substrates at high frequencies. J Eur Ceram Soc 2004, 24: 1463–1466.
JM Heintz, P Letullier, JL Miane, et al. Dielectric properties of alumina lamellar ceramics. Mat Sci Eng B 1998, 52: 84–88.
C-L Huang, J-J Wang, C-Y Huang. Sintering behavior and microwave dielectric properties of nano alpha-alumina. Mater Lett 2005, 59: 3746–3749.
NM Alford, SJ Penn. Sintered alumina with low dielectric loss. J Appl Phys 1996, 80: 5895–5898.
KP Surendran, MT Sebastian, MV Manjusha, et al. A low loss, dielectric substrate in ZnAl2O4–TiO2 system for microelectronic applications. J Appl Phys 2005, 98: 044101.
Y Ohishi, Y Miyauchi, H Ohsato, et al. Controlled temperature coefficient of resonant frequency of Al2O3–TiO2 ceramics by annealing treatment. Jpn J Appl Phys 2004, 43: L749.
Y Miyauchi, Y Ohishi, S Miyake, et al. Improvement of the dielectric properties of rutile-doped Al2O3 ceramics by annealing treatment. J Eur Ceram Soc 2006, 26: 2093–2096.
J-M Wu, W-Z Lu, W Lei, et al. Effects of aqueous gelcasting and dry pressing on the sinterability and microwave dielectric properties of ZnAl2O4-based ceramics. Ceram Int 2011, 37: 481–486.
J-M Wu, W Lei, X-H Wang, et al. Ba0.6Sr0.4TiO3–MgO ceramic powders with uniform microstructures prepared by aqueous gelcasting-assisted solid-state method. J Am Ceram Soc 2012, 95: 1960–1964.
X Mao, S Shimai, M Dong, et al. Gelcasting and pressureless sintering of translucent alumina ceramics. J Am Ceram Soc 2008, 91: 1700–1702.
J-M Wu, X-H Wang, Y-N Fan, et al. Microstructures and dielectric properties of Ba0.6Sr0.4TiO3–MgO ceramics prepared by non-aqueous gelcasting and dry pressing. Mater Res Bull 2011, 46: 2217–2221.
J-M Wu, W-Z Lu, J Liang, et al. Microwave dielectric properties of 0.9Al2O3–0.1TiO2 ceramics prepared by aqueous gelcasting. J Inorgc Mater 2010, 26: 102–106.
J Yang, J Yu, Y Huang. Recent developments in gelcasting of ceramics. J Am Ceram Soc 2011, 31: 2569–2591.
W Wan, J Yang, J Zeng, et al. Effect of solid loading on gelcasting of silica ceramics using DMAA. Ceram Int 2014, 40: 1735–1740.
K Prabhakaran, A Melkeri, NM Gokhale, et al. Direct coagulation casting of YSZ powder suspensions using MgO as coagulating agent. Ceram Int 2009, 35: 1487–1492.
TJ Graule, LJ Gauckler, FH Baader. Direct coagulation casting—A new green shaping technique. Part. 1. Processing principles. Industrial Ceramics 1996, 16: 31–34.
LJ Gauckler, Th Graule, F Baader. Ceramic forming using enzyme catalyzed reactions. Mater Chem Phys 1999, 61: 78–102.
B Balzer, MKM Hruschka, LJ Gauckler. In situ rheological investigation of the coagulation in aqueous alumina suspensions. J Am Ceram Soc 2001, 84: 1733–1739.
J Yang, Y Huang, LP Meier, et al. Direct coagulation casting via increasing ionic strength. Key Eng Mater 2002, 224–226: 631–636.
J Xu, M Yang, K Gan, et al. Enhanced piezoelectric properties of PZT ceramics prepared by direct coagulation casting via high valence counterions (DCC–HVCI). Ceram Int 2016, 42: 2821–2828.
SB Hall, JR Duffield, DR Williams. A reassessment of the applicability of the DLVO theory as an explanation for the Schulze–Hardy rule for colloid aggregation. J Colloid Interface Sci 1991, 143: 411–415.
KE Verrall, P Warwick, AJ Fairhurst. Application of the Schulze–Hardy rule to haematite and haematite/humate colloid stability. Colloid Surf A 1999, 150: 261–273.
A-N Chen, J-M Wu, M-Y Liu, et al. Rapid in-situ solidification of SiO2 suspension by direct coagulation casting via controlled release of high valence counter ions from calcium iodate and pH shift. Ceram Int 2017, 43: 1930–1936.
A-N Chen, J-M Wu, H Xiao, et al. Rapid and uniform in-situ solidification of alumina suspension via a non-contamination DCC–HVCI method using MgO sintering additive as coagulating agent. Ceram Int 2017, 43: 9926–9933.
J Xu, K Gan, M-H Yang, et al. Direct coagulation casting of yttria-stabilized zirconia using magnesium citrate and glycerol diacetate. Ceram Int 2015, 41: 5772–5778.
J Xu, Y Zhang, Y Qu, et al. Direct coagulation casting of alumina suspension from calcium citrate assisted by pH shift. J Am Ceram Soc 2014, 97: 1048–1053.
J Xu, N Wen, H Li, et al. Direct coagulation casting of alumina suspension by high valence counter ions using Ca(IO3)2 as coagulating agent. J Am Ceram Soc 2012, 95: 2525–2530.
J Xu, N Wen, F Qi, et al. Direct coagulation casting of positively charged alumina suspension by controlled release of high valence counter ions from calcium phosphate. J Am Ceram Soc 2012, 95: 2155–2160.
BW Hakki, PD Coleman. A dielectric resonator method of measuring inductive capacities in the millimeter range. IRE Trans MTT 1960, 8: 402–410.
PC Hidber, TJ Graule, LJ Gauckler. Citric acid—A dispersant for aqueous alumina suspensions. J Am Ceram Soc 1996, 79: 1857–1867.
H Xiao, J-M Wu, A-N Chen, et al. Alumina fiber-reinforced silica matrix composites with improved mechanical properties prepared by a novel DCC–HVCI method. Ceram Int 2017, 43: 16436–16442.
ML Li. Concise Handbook of Chemical Data. Beijing: Chem. Ind. Press, 2003.