本文選題：溶膠-凝膠法 + 鈮酸鈉鉀壓電陶瓷　； 參考：《濟南大學》2016年碩士論文

【摘要】：采用溶膠-凝膠法研究了鈮酸鈉鉀基壓電陶瓷體的制備工藝條件,制備了純(K_(0.5)Na_(0.5))NbO_3(簡寫為KNN)壓電陶瓷,以及改性元素鉍、鐵(簡寫為BF)摻雜的(K_(0.5)Na_(0.5))_(1-x)Nb_(1-x)O_(3-x)BF(簡寫為KNN-x BF)壓電陶瓷。燒結(jié)溫度為1100℃,保溫時間為2h時,制備的KNN-0.008BF陶瓷的壓電常數(shù)d33為136p C/N,為正交鈣鈦礦結(jié)構(gòu),結(jié)構(gòu)較為致密,晶粒尺寸較為均勻,結(jié)晶程度較為完善。鈮酸鈉鉀基壓電陶瓷在燒結(jié)過程中堿金屬元素鈉、鉀極易揮發(fā),導致陶瓷的化學計量發(fā)生偏移,影響陶瓷的結(jié)構(gòu)性能。摻加過量堿金屬元素Na和K,制備(K_(0.496)Na_(0.496))Nb_(0.992)O_3-0.008BF-xNa(簡寫為KNN-BF-x Na)、和(K_(0.496)Na_(0.496))Nb_(0.992)O_3-0.008BF-yK(簡寫為KNN-BF-y K)壓電陶瓷。堿金屬元素鈉的過量摻量為0.03時,陶瓷獲得較為優(yōu)異的結(jié)構(gòu)性能,其壓電常數(shù)d33為149p C/N,機電耦合系數(shù)Kp為0.41,介電常數(shù)ε_r為641,介質(zhì)損耗tanδ為0.06。同時陶瓷為單一的正交鈣鈦礦結(jié)構(gòu),結(jié)晶較為完善,晶體顆粒較為均勻,致密度較好。在堿金屬元素鈉的過量摻量為0.03的基礎(chǔ)上摻加燒結(jié)助劑Cu O,制備不同燒結(jié)助劑摻量下的(K_(0.496)Na_(0.496))Nb_(0.992)O_3-0.008BF-0.03Na(簡稱KNN-BF-Na)壓電陶瓷。在摻量為0.010時,晶粒發(fā)育比較完善,顆粒的均勻性、致密度均較好,為單一的正交鈣鈦礦結(jié)構(gòu),其壓電常數(shù)電常數(shù)d33為128p C/N,機電耦合系數(shù)Kp為0.37,介電常數(shù)ε_r為625,介質(zhì)損耗tanδ為0.08,具有較好的電學性能。設(shè)計了三因素三水平的正交實驗,觀察燒結(jié)溫度、Li摻量、燒結(jié)助劑Cu O摻量的影響規(guī)律。制備了九組不同堿金屬元素Li和燒結(jié)助劑Cu O摻量下的(K_(0.5)Na_(0.5))_(0.992-x)Nb_(0.992)O_3-0.008BF(簡稱KNN-BF)壓電陶瓷,并對陶瓷材料的結(jié)構(gòu)、密度和壓電性能進行了分析。試樣晶粒尺寸較為均勻,致密度相對較好,為單一的正交鈣鈦礦結(jié)構(gòu)或四方鈣鈦礦結(jié)構(gòu)。通過正交實驗分析及驗證知,燒結(jié)溫度為1000℃,Li摻量為0.04,Cu O摻量為0.005時,陶瓷材料具有較優(yōu)異的壓電性能,其壓電常數(shù)達到99p C/N,密度達到4.13g/cm~3。
[Abstract]:The preparation conditions of potassium sodium niobate potassium based piezoelectric ceramics were studied by sol-gel method. The pure (K_ (0.5) Na_ (0.5)) NbO_3 (KNN) piezoelectric ceramics, and the modified element bismuth, (K_ (0.5) Na_ (0.5)) doped (1-x) Nb_ (1-x) O_ (1-x) O_ (3-x) piezoelectric ceramics were prepared. The sintering temperature was 1100, and the holding time was 1100. The piezoelectric constant d33 of KNN-0.008BF ceramics prepared for 2h is 136p C/N, which is an orthogonal perovskite structure with more compact structure, more uniform grain size and more perfect crystallization. The sodium niobate potassium based piezoelectric ceramic is very volatile in the process of sintering, which leads to the shift of the chemical metrology of ceramics and the effect of ceramic junction. Structure properties. Adding excess alkali metal elements Na and K to prepare (K_ (0.496) Na_ (0.496)) Nb_ (0.992) O_3-0.008BF-xNa (short of KNN-BF-x Na), and (K_ (0.496) Na_ (0.496)) Nb_ (0.992) O_3-0.008BF-yK (abbreviated as) piezoelectric ceramics. When the excess amount of sodium alkali metal is 0.03, the ceramics have excellent structural properties, and their piezoelectricity is constant The number of d33 is 149p C/N, the electromechanical coupling coefficient Kp is 0.41, the dielectric constant epsilon _r is 641, the dielectric loss tan delta is 0.06. at the same time as the single orthogonal perovskite structure, the crystal is more perfect, the crystal particles are more uniform and the density is better. The sintering aids Cu O is added to the alkali metal element sodium over 0.03, and the sintering aid is prepared for different sintering aid. Under the dosage of (K_ (0.496) Na_ (0.496)) Nb_ (0.992) O_3-0.008BF-0.03Na (abbreviated as KNN-BF-Na) piezoelectric ceramics, the grain development is perfect, the grain uniformity and the density are better when the amount is 0.010, which is a single orthogonal perovskite structure. The piezoelectric constant d33 is 128p C/N, the electromechanical coupling coefficient Kp is 0.37, the dielectric constant is 6 and the dielectric constant is 6 25, the dielectric loss tan delta is 0.08 and has good electrical properties. An orthogonal experiment with three factors and three levels is designed to observe the influence of sintering temperature, Li content, and sintering aids Cu O doping. Nine groups of alkali metal elements Li and Cu O doping (K_ (0.5) Na_ (0.5)) (0.992-x) Nb_ (0.992) O_3-0.008BF (0.992-x) O_3-0.008BF (0.992) O_3-0.008BF (0.992-x) O_3-0.008BF (0.992-x) O_3-0.008BF (0.992-x) O_3-0.008BF (0.992) O_3-0.008BF (0.992-x) O_3-0.008BF (0.992-x) O_3-0.008BF (0.992-x) O_3-0.008BF (0.992) O_3-0.008BF The structure, density and piezoelectric properties of ceramic materials are analyzed. The grain size of the specimen is more uniform and the density is relatively good. It is a single orthogonal perovskite structure or tetragonal perovskite structure. Through orthogonal experimental analysis and verification, the ceramic material has a sintering temperature of 1000, 0.04 Li and 0.005 Cu O. It has excellent piezoelectric properties, and its piezoelectric constant reaches 99p C/N, and its density is 4.13g/cm~3..
【學位授予單位】：濟南大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TQ174.1

【參考文獻】

相關(guān)期刊論文 前10條

1 劉超;李方旭;肖定全;朱建國;;KNN基無鉛壓電陶瓷組分設(shè)計與相界構(gòu)建研究進展[J];功能材料;2014年01期

2 郝航飛;談國強;耶維;晏霞;任慧君;;0.992K_(0.5)Na_(0.5)NbO_3-0.008BiFeO_3無鉛壓電陶瓷制備及壓電性能研究[J];陜西科技大學學報(自然科學版);2013年06期

3 李曉娟;惠增哲;龍偉;方頻陽;;ZnO摻雜KNN陶瓷燒結(jié)行為與性能研究[J];人工晶體學報;2012年05期

4 翟霞;王華;崔業(yè)讓;袁昌來;許積文;張小文;周昌榮;江民紅;劉心宇;;CuO摻雜對KNN-LS-BF無鉛壓電陶瓷性能的影響[J];人工晶體學報;2012年04期

5 呂會芹;武麗明;王淑婷;遲慶斌;劉泳;初瑞清;徐志軍;;KNN基無鉛壓電陶瓷的研究進展[J];聊城大學學報(自然科學版);2012年02期

6 寧海霞;;傳統(tǒng)工藝制備鈮酸鉀鈉基無鉛壓電陶瓷的性能控制[J];鑄造技術(shù);2011年01期

7 張燕杰;初瑞清;徐志軍;劉泳;陳倩;臧國忠;;BNT基無鉛壓電陶瓷研究進展[J];聊城大學學報(自然科學版);2010年04期

8 肖定全;吳文娟;梁文峰;朱建國;;鈣鈦礦型鈮酸鹽系無鉛壓電陶瓷材料與器件的研究進展[J];材料導報;2010年15期

9 裴先茹;高海榮;;壓電材料的研究和應(yīng)用現(xiàn)狀[J];安徽化工;2010年03期

10 趙亞;李全祿;王勝利;秦梅寶;張引紅;;無鉛壓電陶瓷的研究與應(yīng)用進展[J];硅酸鹽通報;2010年03期

相關(guān)博士學位論文 前1條

1 江民紅;KNN基無鉛壓電陶瓷的改性與機理研究[D];中南大學;2010年

，

本文編號：2066983