硅酸鹽學(xué)報中文論文模板.doc

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1、第41卷第1期·7·盧都友等：輕燒氧化鎂對地質(zhì)聚合物變形行為的影響及機理第41卷第1期2013年1月硅酸鹽學(xué)報JOURNALOFTHECHINESECERAMICSOCIETYVol.41，No.1January，2013MgSn0.05Ti0.95O3–SrTiO3復(fù)相陶瓷的顯微結(jié)構(gòu)與微波介電性能龔志杰1，王哲飛1，王麗熙1，韓巍2，付振曉2，張其土1(1.南京工業(yè)大學(xué)材料科學(xué)與工程學(xué)院，南京210009；2.廣東風華高新科技股份有限公司，廣東肇慶526000)摘要：采用傳統(tǒng)固相法制備了不同摩爾配比的(1–x

2、)MgSn0.05Ti0.95O3–xSrTiO3微波介質(zhì)復(fù)相陶瓷材料，研究了復(fù)相陶瓷的燒結(jié)特性、顯微結(jié)構(gòu)和微波介電性能。結(jié)果表明：MgSn0.05Ti0.95O3和SrTiO3兩相共存，無固溶現(xiàn)象。隨著SrTiO3含量的增多，(1–x)MgSn0.05Ti0.95O3–xSrTiO3的相對介電常數(shù)(εr)線性增大，品質(zhì)因數(shù)(Q×f)下降，諧振頻率溫度系數(shù)(τf)從負值變?yōu)檎?。通過調(diào)節(jié)x值，可以獲得近零的τf值。陶瓷的τf變化符合Lichtenecker混合法則。0.98MgSn0.05Ti0.95O3–0.02

3、SrTiO3復(fù)相陶瓷在1330℃燒結(jié)4h，獲得最佳的微波介電性能：εr=19.32，Q×f=193.527THz，τf=?2×10–6/℃。關(guān)鍵詞：微波介質(zhì)陶瓷；復(fù)相陶瓷；介電性能；品質(zhì)因數(shù)中圖分類號：TQ174.75文獻標志碼：A文章編號：0454–5648(2013)01–網(wǎng)絡(luò)出版時間：網(wǎng)絡(luò)出版地址：MicrowaveDielectricPropertiesofMgSn0.05Ti0.95O3–SrTiO3MultiphaseCeramicsGONGZhijie，WANGZhefei，WANGLixi，HANW

4、ei，F(xiàn)UZhenxiao，ZHANGQitu(1.CollegeofMaterialsScienceandEngineering,NanjingUniversityofTechnology,Nanjing210009,China;2.GuangdongFenghuaAdvancedTechnologyCompanyLimited,Guangdong526020,China)Abstract:Themicrowavedielectricmultiphaseceramicsof(1–x)MgSn0.05Ti0.95O

5、3–xSrTiO3werepreparedbyaconventionalsolid-stateroute.Thesinterability,microstructuresandmicrowavedielectricpropertiesofthemultiphaseceramicswereinvestigated.TheresultsshowthatMgSn0.05Ti0.95O3andSrTiO3canco-existastwophaseswithoutanysolidsolution.Therelativedie

6、lectriccon-stant(εr)linearlyincreased,thequalityfactor(Q×f)decreasedandthevalueofthetemperaturecoefficientofresonancefrequency(τf)variedfromnegativetopositivewiththeincreaseofSrTiO3content.Inaddition,anear-zeroτfvaluewasobtainedbytheadjustmentofthevalueofx.The

7、variationinthethevalueofτfof(1–x)MgSn0.05Ti0.95O3–xSrTiO3multiphaseceramicsfollowedtheLichteneckermixturerules.Themultiphaseceramic0.98MgSn0.05Ti0.95O3–0.02SrTiO3sinteredat1330℃for4hhadexcellentmicrowavedielec-tricproperties(i.e.,εr=19.32,Q×f=193.527THz,τf=?2×

8、10–6/℃).Keywords:microwavedielectricceramic;multiphaseceramics;dielectricproperties;qualityfactor近年來，微波介質(zhì)陶瓷材料在手機通信、無線局域網(wǎng)絡(luò)、衛(wèi)星直播、全球定位系統(tǒng)等通訊領(lǐng)域得到了廣泛應(yīng)用[1]。為了提高通訊質(zhì)量，具有高品質(zhì)因數(shù)的微波介質(zhì)陶瓷材料日益受到人們