本文關(guān)鍵詞：W、Zr共同摻雜對(duì)鈮酸鉀鈉基無(wú)鉛壓電陶瓷的影響　出處：《硅酸鹽學(xué)報(bào)》2016年09期 　論文類(lèi)型：期刊論文

  更多相關(guān)文章： 鈮酸鉀鈉 無(wú)鉛壓電陶瓷 鎢鋯共同摻雜 晶體結(jié)構(gòu) 熱穩(wěn)定性

【摘要】：采用傳統(tǒng)固相燒結(jié)法制備了0.94(Na0.535K0.48)Nb1 x(W0.5Zr0.5)xO3 0.06Li Sb O3(x=0,0.01,0.02,0.03,0.04)無(wú)鉛壓電陶瓷,其中,鎢和鋯以摩爾比為0.5:0.5組成摻雜共同體取代Nb,改變(W0.5Zr0.5)摻雜量x,觀(guān)察鈣鈦礦結(jié)構(gòu)B位異價(jià)元素的摻雜對(duì)鈮酸鉀鈉基無(wú)鉛壓電陶瓷的影響。結(jié)果表明:陶瓷的晶體結(jié)構(gòu)隨著x的增加由四方相轉(zhuǎn)變?yōu)檎幌?晶格間距減小。摻雜量x=1%時(shí),陶瓷的綜合性能良好,壓電常數(shù)為203 p C/N,機(jī)電耦合系數(shù)為0.309,相對(duì)介電常數(shù)為813,Curie溫度為350℃,燒結(jié)性能也得到了提高。
[Abstract]:A conventional solid-state sintering method was used to prepare 0.94L Na0.535K0.48HNb1, W0.5Zr0.5OxO3, 0.06Li SB O _ 3O _ 3H _ 2O _ 0. The lead free piezoelectric ceramics were prepared by 0.01 / 0.02 / 0.03 / 0.04), in which tungsten and zirconium were substituted for NB by doping community with molar ratio of 0.5: 0.5. Change the doping amount of W _ (0.5) Zr _ (0.5) x. The effect of heterovalent elements in perovskite structure on lead-free piezoelectric ceramics based on potassium and sodium niobate was observed. The results showed that the crystal structure of the ceramics changed from tetragonal phase to orthotropic phase with the increase of x. The lattice spacing decreases. When x = 1, the ceramic has good comprehensive properties, piezoelectric constant is 203p C / N, electromechanical coupling coefficient is 0.309, and the relative dielectric constant is 813. The Curie temperature is 350 鈩，

本文編號(hào)：1418027