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1、第32卷第10期硅酸鹽通報(bào)Vo1.32No.102013年10月BULLETINOFTHECHINESECERAMICS0CIETYOctober.2013葉臘石干法研磨過程中偏葉臘石相的HRTEM研究嚴(yán)俊,張儉,嚴(yán)雪俊,方飚,徐利強(qiáng),盛嘉偉(1.浙江省質(zhì)量檢測科學(xué)研究院,杭州310013;2.浙江工業(yè)大學(xué)化學(xué)212程與材料學(xué)院,杭州310014)摘要:采用高分辨透射電鏡(HRTEM)對(duì)葉臘石研磨的中間產(chǎn)物偏葉臘石相進(jìn)行晶體結(jié)構(gòu)的研究,并就研磨與熱處理對(duì)葉臘石晶體結(jié)構(gòu)的影響首次進(jìn)行了傅里葉變換紅外(FTIR)光譜的對(duì)比。結(jié)果
2、表明:(1)干法研磨過程中,葉臘石研磨的中間相為偏葉臘石,且研磨使得葉臘石的晶體結(jié)構(gòu)出現(xiàn)明顯的晶格膨脹,其中研磨作用對(duì)葉臘石沿其C軸方向的晶體結(jié)構(gòu)的影響較大。(2)研磨或者熱處理?xiàng)l件下,葉臘石的FTIR光譜中3673am處峰形尖銳的羥基伸縮振動(dòng)峰的強(qiáng)度隨著研磨時(shí)間或煅燒溫度的增大而逐漸降低,并最終消失。該結(jié)論表明熱與機(jī)械力研磨處理對(duì)葉臘石晶體結(jié)構(gòu)的破壞具有相似性。關(guān)鍵詞:葉臘石;干法研磨;偏葉臘石;高分辨透射電鏡;傅里葉紅外光譜中圖分類號(hào):P575文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1001.1625(2013)10。1993-05In
3、vestigationontheAnhydridePhaseofPyrophylliteduringDryGrindingbyHigh—resolutionTransmissionElectronMicroscopyYANJun,ZHANGJian,YANXue-jun,F(xiàn)ANGBiao,XULi.qiang,SHENGJia.wei(1.ZhejiangInstituteofQualityInspectionScience,Hangzbon310013,China;2.CollegeofChemicalEngineerin
4、gandMaterialsScience,ZhejiangUniversityofTechnology,Hangzhou310014,China)Abstract:Thelatticestructureofpyrophylliteanhydrideproducedbydrygrindingwasinvestigatedbyusinghigh—resolutiontransmissionelectronmicroscopy(HRTEM).Furthermore,theeffectsofthermaltreatmentanddr
5、ygrindingonthelatticestructureofpyrophyllitewerealsocomparativestudiedbyFouriertransformationinfraredspectroscopy(FTrIR).Thefollowingresultsareobtained:(1)Drygrindingofpyrophylliteleadstotransformationintotheanhydridephaseofpyrophyllite.Meanwhile,drygrindingcancaus
6、ethelatticedilatation.Thealterationbygrindingisgreaterinthedirectionthec-axisofpyrophyllitecrystalstructure.(2)Withtheincreaseofgrindingtimeorannealingtemperature,theintenseandsharpsinglebanddetectedat3673am一intheFrIRspectraofheatedorgroundpyrophyllitepowderdecreas
7、edinintensity,whichisassignedtoOH-stretchingvibration,anddisappearedinfinally.Itindicatedthesimilareffectsonthelatticestructurewerecoexistedduringthethermalandmechanicaltreatmentsofpyrophyllite.Keywords:pyrophyllite;drygrinding;pyrophylliteanhydride;HRTEM;FTIRspect
8、rum引言葉臘石是一種含水鋁硅酸鹽層狀粘土礦物,其理論化學(xué)成分為A1:O,28.3%,SiO:66.7%,HO5.O%,基金項(xiàng)目:浙江省科技廳公益技術(shù)研究社會(huì)發(fā)展項(xiàng)目(2011C33SAB8001);浙江省科技廳重大主題專項(xiàng)(2007C111042);浙江省質(zhì)檢院預(yù)研項(xiàng)目(2013bm09