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Glass-free Li2ZnTi3O8 low temperature cofired ceramics by pretreating raw materials

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Abstract

In this work, a method (abbreviated as LZT2) to obtain glass-free Li2ZnTi3O8 low temperature cofired ceramics was reported. For the LZT2, the raw materials of Li2CO3, ZnO and TiO2 were ball milled before mixing, while those for the traditional ceramic technique (abbreviated as LZT1) were directly used without further processing. The powders from LZT2 tended to be smaller and uniform, which lowered the optimized sintering temperature of ceramics from 1050 °C (LZT1) to 950 °C (LZT2). After sintering at 950 °C, LZT2 ceramics exhibit good microwave dielectric performance with ε r  = 25.8, Q × f = 74,200 GHz (at ~5.9 GHz), τ f  = −13 ppm/°C. Moreover, LZT2 ceramic was found to be chemically compatible with Ag when sintered at 950 °C for 2 h. These results indicate that the pretreatment of raw materials is a relatively simple and effective method to optimize the sinterability and microwave dielectric properties of LZT ceramics.

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Acknowledgments

This work was supported by Natural Science Foundation of China (Nos. 11464009 and 11364012), Natural Science Foundation of Guangxi (Nos. 2015GXNSFDA139033, 2014GXNSFAA118312, 2013GXNSFAA019291 and 2014GXNSFAA118326), Research Start-up Funds Doctor of Guilin University of Technology (Nos. 002401003281 and 002401003282) and Project of Outstanding Young Teachers’ Training in Higher Education Institutions of Guangxi.

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Authors and Affiliations

  1. Guangxi Ministry-Province Jointly-Constructed Cultivation Base for State Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi Key Laboratory in Universities of Clean Metallurgy and Comprehensive Utilization for Non-ferrous Metals Resources, Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi, School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, China

    Huanfu Zhou, Nan Wang, Xianghu Tan, Jin Huang & Xiuli Chen

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  1. Huanfu Zhou
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  2. Nan Wang
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  3. Xianghu Tan
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  4. Jin Huang
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  5. Xiuli Chen
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Correspondence to Huanfu Zhou.

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Zhou, H., Wang, N., Tan, X. et al. Glass-free Li2ZnTi3O8 low temperature cofired ceramics by pretreating raw materials. J Mater Sci: Mater Electron 27, 11850–11855 (2016). https://doi.org/10.1007/s10854-016-5327-2

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  • DOI: https://doi.org/10.1007/s10854-016-5327-2

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