基于Swartz and Shrout的二次合成法,采用改进的两步法,将部分原料预合成,一次烧结合成具有100%钙钛矿结构的75Pb(Zn1/3Nb2/3)O3-10PbTiO3-15BaTiO3固溶体陶瓷.首先一次性称量PbO,然后和ZnNb2O6混合,在660～800℃预合成,将预合成产物粉碎后再与TiO2和BaCO3按化学计量称量,充分混合后,在1060～1140℃保温1～2h烧结成陶瓷试样.实验结果表明:改进的两步法工艺能够将预合成温度降为660℃,烧结温度能被拓宽到80℃获得100%钙钛矿结构的固溶体陶瓷.不同于传统的预合成和烧结,改进的两步法工艺简单、有效,在预合成阶段没有形成钙钛矿相,烧结阶段陶瓷的成瓷和致密化同时进行,完成了中间相向钙钛矿相的转变,获得了介电性能优良的陶瓷试样.
参考文献
| [1] | Wakiya N;Ishizawa N;Hinazaki K S et al.Thermal stability of Pb(Zn1/3Nb2/3)O3 (PZN) and consideration of stabilization conditions of perovskite type compounds[J].Materials Research Bulletin,1995,30(09):1121-1131. |
| [2] | Swartz S L;Shrout T R .Fabrication of perovskite lead magnesium niobate[J].Materials Research Bulletin,1982,17:1245-1250. |
| [3] | Halliyal A;Kumar U;Newnham R E et al.Stabilization of the perovskite phase and dielectric properties of ceramics in the Pb (Zn1/3Nb2/3) O3 - BaTiO3 system[J].American Ceramic Society Bulletin,1987,66(04):671-676. |
| [4] | Wang Xiaoli;Yao Xi .Formation of perovskite phasein PZN based ceramics[J].FERROELECTRICS,1997,196:195-198. |
| [5] | Belsick J R;Halliyal A;Kumar U et al.Phase relations and dielectric properties of ceramics in the system Pb(ZN1/3Nb2/3)O3-SrTiO3-BaTiO3[J].American Ceramic Society Bulletin,1987,66(04):664-667. |
| [6] | Xia F.;Wang XL.;Yao X. .Effects of thermal annealing on the dielectric and piezoelectric properties of PZN-PT-BT ceramics[J].Journal of Materials Science Letters,1998(10):861-863. |
| [7] | Wang Xiaoli .Effect of micro- region heterogeneity on phase structure and dielectric properties in Pb(Zn1/3Nb2/3) O3- PbTiO3 - BaTiO3 ceramics[J].Journal of Materials Science,1999,34:6027-6033. |
| [8] | Wang Xiaoli;Chen H .Dielectric behaviors under high electric field for Pb(Zn1/3Nb2/3)O3- PbTiO3- BaTiO3 relaxor ferroelectric ceramics[J].Journal of Applied Physics,2002,91(09):5979-5984. |
| [9] | Inada M .Analysis of the formation process of the piezoelectric PCM ceramics[J].Japanese National Technical Report,1997,23(01):95-102. |
| [10] | Lejeune M;Boilot J P .Formation mechanism and ceramic process of the ferroelectric perovskites:Pb (Mg1/3Nb2/3) O3 and Pb(Fe1/2Nb1/2)O3[J].Ceramics International,1982,8(03):99-103. |
| [11] | Bouquin O;Lejeune M .Formation of the perovskite phase in the PMN-PT system[J].Journal of the American Ceramic Society,1991,74(05):1152-1157. |
| [12] | Dambekalne M;Brante I;Stornberg A .The formation process of complex lead-containing niobate[J].Ferroelectrics,1989,90:1-14. |
| [13] | Matsuo Y;Sasaki H;Hayakawa S .High -pressure synthesis of perovskite - type Pb(Zn1/3Nb2/3)O3[J].Journal of the American Ceramic Society,1969,52(09):516-517. |
| [14] | Gururaja T R;Safari A;Hallijal A .Preparation of perovskite PZN- PT ceramic power near the morphotropic phase boundary[J].American Ceramic Society Bulletin,1986,65(12):1601-1603. |
| [15] | Hyun M. Jang;Kyu-Mann Lee .Dielectric and piezoelectric properties of the thermally annealed Pb(Zn, Mg)_(1/3)Nb-(2/3)O_3-PbTiO_3 system across the rhombohedral/tetragonal morphotropic phase boundary[J].Journal of Materials Research,1995(12):3185-3193. |
| [16] | 裴志斌,车俊,薛建波,屈绍波,田长生.铅欠缺对PZN基陶瓷相组成和介电性能的影响[J].空军工程大学学报(自然科学版),2003(01):77-81. |
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