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研究生:許晉銘
研究生(外文):Shee, Jeffrey
論文名稱:PZN-PZ-PT三元系壓電陶瓷特性改良之研究
論文名稱(外文):Additive Effects on Electric Properties of PZN-PZ-PT Piezoelectric Ceramics
指導教授:駱榮富
指導教授(外文):Luo, Rong-Fu
學位類別:碩士
校院名稱:逢甲大學
系所名稱:材料工程研究所
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:1997
畢業學年度:85
語文別:中文
論文頁數:128
中文關鍵詞:壓電陶瓷材料二氧化錳二氧化錫機械品質因子介電損失因子徑向機電耦合因子材料科學工程
外文關鍵詞:Piezoelectric ceramic materialMnO2SnO2Mechanical quality factorDielectric loss factorRadial electromechanical coupling factorMATERIALS-SCIENCEENGINEERING
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Since Pb(ZrxTi1-x)O3 (PZT) piezoelectric ceramics was
synthesis by solidstate reaction of PbZrO3 and PbTiO3
precursors, vast amount of work was carriedout of study and to
develop the related piezoelectric properties and application .
Used as mechanical vibration type of transducer, piezoelectric
ceramic required hgih mechanical quality factor (Qm) in order to
minimize the self-heating problem during operation and to assure
better component life. In this study, the influence of doping
amount and dopant species among the sintering profile on the
piezoelectric properties of Pb(Zn1/3Nb2/3)O3-PbZrO3-PbTiO3 (PZN-
PZ-PT(37.5/28/34.5)), which was obtained via the mixed oxide
synthesis route, was systematicallly evaluated. The aim of this
study is to improve better electrical properties by achieving
higher mechanical quality factor (Qm) and radial
electromechanical coupling factor (kp) and lower dissipation
factor (tand) to meet the requirements of piezoelectric
transducers. Results indicate that the opitmal sintering
condition was 1200oC/1~3hr forPZN-PZ-PT-based piezoelectric
ceramics, of which radial electromechanical coupling factor (kp=
0.58~0.62) and piezoelectric strain constant (d33 = 398~428 pC/
N) were achieved with addition of 1~3 mol% SnO2. Such electric
propertiesare appropriate for piezoelectric actuator
application. With addong MnO2, thesintered PZN-PZ-PT showed
enhanced electrical properties including Qm=1200~1500, kp=0.53
~0.56, e33=1700, tand=0.5%, d33=280~320pC/N, with gives rise to
Curietemperature (Tc) ranged in the neighborhood of 280~320oC
and was demonstrated tobe suitable for vibration type of
transducer application. Addition of Ca2Fe2O5 in PZN-PZ-PT
suggests no essential improvement of electrical properties and
resulted in profounfly lowering Tc point then the species with
adding MnO2 orSnO2 did, which turnd out to be inexpdeient to
current transducer design, theaddition of Ca2Fe2O5 in PZN-PZ-PT
should be deliberately controlled.

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