ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract A new method for the synthesis of a solid solution of PbTiO3-PbZrO3-Pb (Mg1/3Nb2/3)O3 system (PZTMN) has been developed. An aqueous solution of Ti4+, Zr4+, Mg2+ and Nb5+ was dropped into a solution of 8-quinolinol in aqueous ammonia. The precipitate formed was washed, dried and fired, then an oxide (ZTMN) was obtained. The best firing temperature for the precipitate was 700 °C. The ZTMN powder was then mixed with PbO powder: when this mixture was fired, PZTMN was formed directly. By a conventional solid-state reaction among PbO, ZrO2, TiO2, MgO and Nb2O5 ([P + Z + T + M + N] method), PbTiO3 and Pb(Mg1/3Nb2/3)O3 were formed as intermediate products during the reaction. The single phase of PZTMN was obtained at 1200 °C for the [P + Z + T + M + N] method and at 800 °C for the new [P + ZTMN] method. The compositional fluctuation of PZTMN prepared by the [P + ZTMN] method was very small, and its dielectric constant was much higher than that of PZTMN prepared by the [P + Z + T + M + N] method. The density of PZTMN prepared by the [P + ZTMN] method practically attained the theoretical density under conditions of calcining at 800 °C and sintering at 1100 °C for 1 h.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01142040
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