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Al摻雜對Ti3SiC2陶瓷制備和性能的影響
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西安電子科技大學(xué)先進材料與納米科技學(xué)院,西安電子科技大學(xué)先進材料與納米科技學(xué)院,西安電子科技大學(xué)先進材料與納米科技學(xué)院,西安電子科技大學(xué)先進材料與納米科技學(xué)院,西北工業(yè)大學(xué),中國振華集團云科電子有限公司

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TB34

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陜西省自然科學(xué)基礎(chǔ)研究計劃（2015JQ6252），高等學(xué)校博士學(xué)科點專項科研基金 (20130203120016) ，寧波市自然科學(xué)基金(2015A610037, 2015A610109, 2016A610029)


Influence of Al doping on the preparation and properties of Ti3SiC2 ceramics
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School of Advanced Materials and Nanotechnology,Xidian University,Xi’an,School of Advanced Materials and Nanotechnology,Xidian University,Xi’an,School of Advanced Materials and Nanotechnology,Xidian University,Xi’an,School of Advanced Materials and Nanotechnology,Xidian University,Xi’an,,

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    摘要:

    采用熱壓燒結(jié)法制備了Al摻雜的Ti3SiC2陶瓷,通過X射線衍射儀、掃描電子顯微鏡、能譜儀、矢量網(wǎng)絡(luò)分析儀等,分別對所制備的樣品進行了表征和抗氧化性能、微波介電性能測試。結(jié)果表明：所制備的Al摻雜陶瓷具有相當高的Ti3SiC2質(zhì)量分數(shù),陶瓷晶粒呈現(xiàn)明顯的層狀特征。相比于未摻雜樣品, 通過Al摻雜途徑,可顯著提高Ti3SiC2陶瓷1200℃高溫下的抗氧化性能,并使Ti3SiC2陶瓷的介電常數(shù)實部ε′和虛部ε″值大幅度增加,其在8.2-12.4GHz頻率范圍的均值分別為60.8和6.28。

    Abstract:

    Al-doped Ti3SiC2 ceramics were prepared by hot-pressing sintering, which were characterized and measured for oxidation resistance and microwave dielectric property by X-ray diffractometer, scanning electron microscope, energy dispersive spectroscopy and vector network analyzer, respectively. Results showed that the prepared ceramic with Al doping had higher mass fraction of Ti3SiC2, and that the as-prepared ceramic grains had the typical laminated appearance. Through the Al doping approach, the oxidation resistance of Ti3SiC2 ceramic at 1200℃ was efficiently improved, and its real component ε′ and imaginary component ε″ of permittivity were greatly increased, compared to undoped sample, which were 60.8 and 6.28 in average in the frequency range of 8.2-12.4GHz, respectively.

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李智敏,張茂林,閆養(yǎng)希,黃云霞,羅發(fā),龐錦標. Al摻雜對Ti3SiC2陶瓷制備和性能的影響[J].稀有金屬材料與工程,2017,46(2):468~472.[Li Zhimin, Zhang Maolin, Yan Yangxi, Huang Yunxia, Luo Fa, Pang Jinbiao. Influence of Al doping on the preparation and properties of Ti3SiC2 ceramics[J]. Rare Metal Materials and Engineering,2017,46(2):468~472.]
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  • 收稿日期:2016-03-02
  • 最后修改日期:2016-05-26
  • 錄用日期:2016-06-12
  • 在線發(fā)布日期: 2017-04-10
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