采用红外光谱(FT-IR)技术分析了以Sm2O3和ZrO2为原料,固相反应制备Sm2Zr2O7的形成机制.结果表明：Sm2O3中的Sm3+逐渐向ZrO2晶格中扩散并取代Zr4+的位置形成萤石结构的ZrO2-Sm2O3固溶体,由于二者化合价的差别为保持晶格结构局部的电中性而引入了氧空位,氧空位的引入加快了ZrO2与Sm2O3固溶过程;随着温度的升高,已形成ZrO2-Sm2O3固溶体转变为焦绿石结构的Sm2Zr2O7,并在1 500℃以后形成Sm2Zr2O7晶体,整个过程没有其它中间相出现.
所属栏目
收稿日期
2007/4/272007/6/12
作者单位
胡仁喜:北京理工大学机械与车辆工程学院, 北京 100081
张红松:河南纺织高等专科学校 机电工程系, 河南 郑州 450007
陈晓鸽:河南纺织高等专科学校 机电工程系, 河南 郑州 450007
魏媛:河南纺织高等专科学校 化学工程系, 河南 郑州 450007
备注
胡仁喜(1976-),男,湖北黄石人,讲师,博士.
引用该论文:
HU Ren-xi,ZHANG Hong-song,CHEN Xiao-ge,WEI Yuan.Analysis of Sm2Zr2O7 Forming Mechanism with Infrared Spectra[J].Materials for mechancial engineering,2008,32(3):35～37
胡仁喜,张红松,陈晓鸽,魏媛.用红外光谱技术分析Sm2Zr2O7的形成机制[J].机械工程材料,2008,32(3):35～37
参考文献
【1】
Nitin P,Padture,Maurice Gell,et al.Thermal barrier boatings for gas-turbine engine applications[J].Materials Science,2002,4(12):280-284.
【2】
Beele W,Marijnissen G,Van A.The evolution of therml barrier coatings-status and upcom ingsolutions for todays key issues[J].Surface and Coatings Technology,1999,120:61-67.
【3】
Cao X Q,Vasseh R,Stoever D.Ceramic materials for thermal barrier coatings[J].Journal of European Ceramic Society,2000,24:1-10.
【4】
Bast U,Schumann E.Development of novel-oxi de materials for TBCs[J].Ceramic-Engineering and Science Proceeding,2002,23:525-532.
【5】
Garlos G L.Emerging materials and processes for thermal barrier systems[J].Current Opinons in Solid State and Materials Science,2004,8:77-91.
【6】
Girijia Suresh,Seenivasan G,Krishnaiah M V,et al.Investigation of the thermal conductivity of s elected compounds of gadolinium and lanthanum[J].Journal of Nuclear Materials,1997,249:259-261.
【7】
杨南如,岳文海.无机非金属材料图谱手册[M].武汉:武汉工业大学出版社,2000.
【8】
陈首钢.氧化锆基纳米复合材料的掺杂稳定机制及生长动力学研究[D].济南:山东大学,2004.
【9】
Richard Nyguist,Ronald O K.Infrared Spectra of Inorgnatic Compounds[M].New York and London:Academic Press,1971.
【10】
Subramanian M A,Aravamudan G,Subba Rao.Oxides pyrochlores-a review[J].Progress of Solid State Chemistry,1983,15:55-143.
【11】
McCauley R A.Infrared-absorption characterials of the pyrochlore structure[J].Journal of the Optical Society of America,1973,63(6):721-725.
【12】
McCaffrey J F,McDevitt N T,Phillippi C M.Infrared lattice spectra of rare-earth stannate and titanate pyrochlores[J].Journal of the Optical Society of America,1971,61(2):209-212.
【13】
Yshima M,Ishizwa N,Yoshimura M.Application of an ion-packing model based on defect clusters to zirconia solid solutions.ⅡApplicability of Vegard’s Law[J].Journal of the American Ceramic Society,1992,75:1550-1557.
【14】
Michel D,Faudot F,Gaffet E,et al.Stabilized zirconias prepared by mechanical alloying[J].Journal of American Ceramic Society,1993,76:2884-2888.
【15】
Vandenborre N T,Husson F,Brusset H,et al.Normal coordinate analysis of AⅢ2BⅣ2O7 compounds(ALa,Nd;B=Zr,Hf) with pyrochlore structure[J].Spe Trochimca Acta Part A(molecular Spectroscopy),1981,27A(2):113-118.
【16】
Fuertes M C,Salgueriro W,Somoza A,et al.Thermal evolution of La3+/ZrO2 solid solutions obtained by mechanochemical activation[J].Scripta Materialia,2004,50:301-305.
【17】
Fuertes,Porto Lopez M C.Mechanochemical synthesis and thermal evolution of La3+-ZrO2 cubic solid solutions[J].Ceramic International,2004,30(8):2137-2142.
【18】
樊先平,洪樟连,翁闻剑,等.无机非金属材料科学基础[M].杭州:浙江大学出版社,2003.
