| 微波LTCC环行器用热压烧结SrFe12O19铁氧体的低温烧结特性 |
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| 引用本文： | 彭龙,李乐中,王瑞,涂小强,胡云.微波LTCC环行器用热压烧结SrFe12O19铁氧体的低温烧结特性[J].稀有金属材料与工程,2017,46(4):951-954. |
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| 作者姓名： | 彭龙 李乐中 王瑞 涂小强 胡云 |
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| 作者单位： | 成都信息工程学院,成都信息工程学院,成都信息工程学院,成都信息工程学院,成都信息工程学院 |
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| 摘 要： | 为了与低温共烧陶瓷（LTCC）技术兼容，本文采用热压烧结工艺在870 °C制备了添加不同Bi2O3含量的SrFe12O19铁氧体材料，着重研究了材料的晶相组成、烧结密度、气孔率和磁性能等低温烧结特性。研究结果表明，材料在870 °C烧结时，Bi2O3的添加促进了SrFe12O19晶相结构的形成，提高了材料的烧结致密度和磁性能。当Bi2O3的添加量为2～4 wt %，材料可以获得致密的结构，烧结密度达到4.65 g?cm-3以上，气孔率低于10%，材料的饱和磁化强度Ms和内禀矫顽力Hci较高，分别达到252.4 kA?m-1和312.9 kA?m-1以上。此外，基于SrFe12O19材料的低温烧结特性讨论了该材料在微波LTCC环行器当中的应用。
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| 关 键 词： | SrFe12O19铁氧体 LTCC 热压烧结 环行器 |
| 收稿时间： | 2014/12/21 0:00:00 |
| 修稿时间： | 2015/1/31 0:00:00 |
Low Temperature Sintering Characteristics of Hot Press Sintered SrFe12O19 Ferrites for Use in Microwave LTCC Circulators |
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| Peng Long,Li Lezhong,Wang Rui,Tu Xiaoqiang and Hu Yun.Low Temperature Sintering Characteristics of Hot Press Sintered SrFe12O19 Ferrites for Use in Microwave LTCC Circulators[J].Rare Metal Materials and Engineering,2017,46(4):951-954. |
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| Authors: | Peng Long Li Lezhong Wang Rui Tu Xiaoqiang and Hu Yun |
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| Affiliation: | Sichuan Province Key Laboratory of Information Materials and Devices Application,Chengdu University of Information Technology,Sichuan Province Key Laboratory of Information Materials and Devices Application,Chengdu University of Information Technology,Sichuan Province Key Laboratory of Information Materials and Devices Application,Chengdu University of Information Technology,Sichuan Province Key Laboratory of Information Materials and Devices Application,Chengdu University of Information Technology,Sichuan Province Key Laboratory of Information Materials and Devices Application,Chengdu University of Information Technology |
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| Abstract: | The SrFe12O19 ferrites with different amount of Bi2O3 additive were prepared by hot press sintering process at a low fired temperature of 870 °C compatible to the LTCC (low temperature co-fired ceramics) technology, and their low temperature sintering characteristics were investigated, including the crystal phase composition, sintering density, porosity, and magnetic properties. The results show that the addition of Bi2O3 promotes the formation of SrFe12O19 phase structure and increases the sintering compactness and magnetic properties for the ferrites fabricated at 870 °C. The ferrites with Bi2O3 content from 2 to 4 wt % exhibit a compact microstructure with sintering density higher than 4.65 g?cm-3 and porosity lower than 10%, which contributes to the enhanced saturation magnetization Ms and intrinsic coercivity Hci above 252.4 kA?m-1 and 312.9 kA?m-1, respectively. Moreover, the potentiality of the SrFe12O19 ferrites for use in microwave LTCC circulators is also discussed based on their low temperature sintering characteristics. |
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| Keywords: | SrFe12O19 ferrites LTCC hot press sintering circulators |
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