{"title":"用于 LTCC 应用的温度稳定 (1-x)BaAl2Si2O8-xBa3V2O8 (0.2 ≤ x ≤ 0.5) 微波介质复合陶瓷","authors":"","doi":"10.1016/j.jeurceramsoc.2024.117042","DOIUrl":null,"url":null,"abstract":"<div><div>BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> microwave dielectric ceramics possess dielectric properties of low permittivity (<em>ε</em><sub>r</sub>) and low loss, coupled with low synthesis cost, making them promising for commercialization. However, the hexagonal structure undergoes high-temperature phase transitions that deteriorate thermal shock resistance and durability, hindering its practical use. In this work, we report temperature-stable BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub>-Ba<sub>3</sub>V<sub>2</sub>O<sub>8</sub> low temperature co-fired ceramics (LTCC). The combination of Ba<sub>3</sub>V<sub>2</sub>O<sub>8</sub> and G9 glass achieved a near-zero <em>τ</em><sub><em>f</em></sub> and a thermal expansion coefficient of ∼ 8.5 ppm/℃, significantly enhancing the temperature stability of BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> ceramics. By employing ion substitution and enhancing lattice disorder, the components of G9 glass were strategically designed to successfully induce hexagonal-to-monoclinic transformation of BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> phase. The dielectric properties of 0.5BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub>-0.5Ba<sub>3</sub>V<sub>2</sub>O<sub>8</sub>-9 wt% G9 sintered at 900 ℃ were <em>ε</em><sub>r</sub> ∼9, <em>Q</em>×<em>f</em> ∼22,000 GHz and <em>τ</em><sub><em>f</em></sub> ∼ +1.9 ppm/℃. Good chemical compatibility with silver powders was confirmed by further investigation of the co-firing behavior. This work provides attractive candidate for BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub>-based LTCCs and an available approach for modifying BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> ceramics.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":null,"pages":null},"PeriodicalIF":5.8000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Temperature stable (1-x)BaAl2Si2O8-xBa3V2O8 (0.2 ≤ x ≤ 0.5) microwave dielectric composite ceramics for LTCC applications\",\"authors\":\"\",\"doi\":\"10.1016/j.jeurceramsoc.2024.117042\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> microwave dielectric ceramics possess dielectric properties of low permittivity (<em>ε</em><sub>r</sub>) and low loss, coupled with low synthesis cost, making them promising for commercialization. However, the hexagonal structure undergoes high-temperature phase transitions that deteriorate thermal shock resistance and durability, hindering its practical use. In this work, we report temperature-stable BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub>-Ba<sub>3</sub>V<sub>2</sub>O<sub>8</sub> low temperature co-fired ceramics (LTCC). The combination of Ba<sub>3</sub>V<sub>2</sub>O<sub>8</sub> and G9 glass achieved a near-zero <em>τ</em><sub><em>f</em></sub> and a thermal expansion coefficient of ∼ 8.5 ppm/℃, significantly enhancing the temperature stability of BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> ceramics. By employing ion substitution and enhancing lattice disorder, the components of G9 glass were strategically designed to successfully induce hexagonal-to-monoclinic transformation of BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> phase. The dielectric properties of 0.5BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub>-0.5Ba<sub>3</sub>V<sub>2</sub>O<sub>8</sub>-9 wt% G9 sintered at 900 ℃ were <em>ε</em><sub>r</sub> ∼9, <em>Q</em>×<em>f</em> ∼22,000 GHz and <em>τ</em><sub><em>f</em></sub> ∼ +1.9 ppm/℃. Good chemical compatibility with silver powders was confirmed by further investigation of the co-firing behavior. This work provides attractive candidate for BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub>-based LTCCs and an available approach for modifying BaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> ceramics.</div></div>\",\"PeriodicalId\":17408,\"journal\":{\"name\":\"Journal of The European Ceramic Society\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2024-10-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of The European Ceramic Society\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0955221924009154\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of The European Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0955221924009154","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Temperature stable (1-x)BaAl2Si2O8-xBa3V2O8 (0.2 ≤ x ≤ 0.5) microwave dielectric composite ceramics for LTCC applications
BaAl2Si2O8 microwave dielectric ceramics possess dielectric properties of low permittivity (εr) and low loss, coupled with low synthesis cost, making them promising for commercialization. However, the hexagonal structure undergoes high-temperature phase transitions that deteriorate thermal shock resistance and durability, hindering its practical use. In this work, we report temperature-stable BaAl2Si2O8-Ba3V2O8 low temperature co-fired ceramics (LTCC). The combination of Ba3V2O8 and G9 glass achieved a near-zero τf and a thermal expansion coefficient of ∼ 8.5 ppm/℃, significantly enhancing the temperature stability of BaAl2Si2O8 ceramics. By employing ion substitution and enhancing lattice disorder, the components of G9 glass were strategically designed to successfully induce hexagonal-to-monoclinic transformation of BaAl2Si2O8 phase. The dielectric properties of 0.5BaAl2Si2O8-0.5Ba3V2O8-9 wt% G9 sintered at 900 ℃ were εr ∼9, Q×f ∼22,000 GHz and τf ∼ +1.9 ppm/℃. Good chemical compatibility with silver powders was confirmed by further investigation of the co-firing behavior. This work provides attractive candidate for BaAl2Si2O8-based LTCCs and an available approach for modifying BaAl2Si2O8 ceramics.
期刊介绍:
The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.