Effect of B2O3 Additives on the Sintering and Dielectric Behaviors of CaMgSi2O6 Ceramics

材料科学技术（英）, 2010, 26(4): 351-354.

^1, , ^2, , ^3, , ^4, , ^5,

1.College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

2.College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

3.College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

4.College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

5.College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

基金项目: the Nature Science Foundation of Zhejiang Province(R406007) the Science Technology of Zhejiang Province(2008C21054) the Program for New Century Excellent Talents in University(NCET-07-0786)

Effect of B2O3 Additives on the Sintering and Dielectric Behaviors of CaMgSi2O6 Ceramics

Huanping Wang ^1, , Shiqing Xu ^2, , Suya Zhai ^3, , Degang Deng ^4, , Haidong Ju ^5,

1.College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

2.College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

3.College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

4.College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

5.College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

Keywords： Dielectric properties

The effects of B2O3 addition, as a sintering agent, on the sintering behavior, microstructure and dielectric properties of CaMgSi2O6 ceramic have been investigated. The CaO-MgO-B2O3-SiO2 glassy phase came forth by adding B2O3 into CaO-MgO-SiO2 ceramic powders, and it was advantageous to lower the synthesis temperature of CaMgSi2O6 crystalline phase. Moreover, the emergence of CaO-MgO-B2O3-SiO2 glass phase could effectively lower the sintering temperature of CaMgSi2O6 ceramic and promote the CaMgSi2O6 grains growing. With 6 wt pct B2O3 addition, the densification temperature of CaMgSi2O6 ceramic could be effectively reduced from 1300 to 1100℃, and the dielectric constant (εr) and dielectric loss (tanδ) were: εr=7.61 and tanδ=7.4×10-4 (1 MHz).

参考文献

[1]	P.V. Bijumon;M.T. Sebastian .Influence of glass additives on the microwave dielectric properties of Ca_5Nb_2TiO_(12) ceramics[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2005(1):31-40.
[2]	N. Santha;M.T. Sebastian .Low temperature sintering and microwave dielectric properties of Ba_4Sm_(9.33)Ti_(18)O_(54) ceramics[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2008(8/9):2278-2284.

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Effect of B2O3 Additives on the Sintering and Dielectric Behaviors of CaMgSi2O6 Ceramics

参考文献