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用二步合成法制备了（１－ｘ）Ｐｂ（Ｍｇ１／３Ｎｂ２／３）Ｏ３－ｘＰｂＴｉＯ３原料，并制成了纯钙钛矿结构压电陶瓷．研究了三方－四方相界附近组份（ｘ＝０．２５～０．４０）及工艺与性能的关系．结果表明，在ｘ＝０．３２～０．３５间材料具有较大的介电常数，压电常数，耦合系数以及较低的品质因数．材料以１２００℃附近保温１５０ｍｉｎ为佳．材料性能表明，有希望成为新型压电陶瓷．
A (1-x) Pb (Mg1 / 3Nb2 / 3) O3-xPbTiO3 material was prepared by a two-step synthesis method and a pure perovskite piezoelectric ceramic was fabricated. The relationship between the composition of the tripartite-tetragonal phase boundary (x = 0.25 ~ 0.40) and the process and properties was studied. The results show that the material has larger dielectric constant, piezoelectric constant, coupling coefficient and lower quality factor at x = 0.32 ~ 0.35. Materials to 1200 ℃ near the insulation 150min better. Material properties show that there is hope for a new type of piezoelectric ceramic.