Piezoelectric ceramics tseem hu ua ultrasonic transducers thiab piezoelectric transducers. Piezoelectric ceramics yog ceramics nrog cov nyhuv piezoelectric, hu ua piezoelectric ceramics. Nws yog qhov tseem ceeb thiab tsis tseem ceeb ntawm cov khoom siv hluav taws xob niaj hnub no. Piezoelectric ceramics tau siv dav hauv kev sib txuas lus niaj hnub, radar, sonar, kev ntsuas tsis siv neeg thiab kev tswj hwm, kev hloov hluav taws xob ultrasonic, kev pib, ultrasonic sterilization, ultrasonic zog, thiab lwm yam. tuaj yeem hloov cov tshuab hluav taws xob rau hauv hluav taws xob lub zog, thiab thaum AC voltage siv, nws tuaj yeem hloov hluav taws xob hluav taws xob rau hauv kev siv hluav taws xob.
PZT piezoelectric ceramics (hmoov txhuas zirconium titanate titanate): qhov twg P yog qhov luv ntawm cov hlau lead Pb, Z yog cov tsiaj ntawv luv ntawm zirconium keeb Zr, T yog qhov luv ntawm titanium keeb Ti, PZT piezoelectric ceramics yog lead dioxide, lead zirconate, Lead titanate yog polycrystalline sintered ntawm qhov kub ntawm 1200 degrees. Nws muaj cov nyhuv piezoelectric zoo thiab tsis zoo piezoelectric siv.
PZT piezoelectric ceramics yog cov kev daws teeb meem ntawm PbZrO3 thiab PbTiO3 nrog tus qauv perovskite. PbTiO3 thiab PbZrO3 yog cov neeg sawv cev li qub ntawm ferroelectrics thiab antiferroelectrics. Txij li Zr thiab Ti muaj cov pab pawg sib xws, PbTiO3 thiab PbZrO3 muaj cov ntawv sib thooj zoo ib yam, tab sis lawv cov macroscopic thaj yog qhov sib txawv heev. Lead titanate yog ferroelectric nrog Curie qhov kub thiab txias ntawm 492 ° C, hos cov zirconate yog cov tshuaj tua hluav taws xob nrog lub Cev Curie ntawm 232 ° C. Xws li qhov sib txawv loj heev tau ua rau muaj kev txhawj xeeb dav.
Los ntawm kev kawm txog cov khoom haum ntawm PbTiO3 thiab PbZrO3, nws pom tias PZT muaj cov khoom zoo dua piezoelectric thiab dielectric ntau dua li lwm cov kev siv ferroelectrics. PZT thiab doped PZT series ferroelectric ceramics tau dhau los ua cov kev tshawb fawb tseem ceeb nyob rau xyoo tas los no.
Hloov lub voj hluav taws xob piezoelectric transducer, lub caij muaj cov tsis muaj zog hauv lub tshav pob poob, qhov siab ntawm lub tshuab hluav taws xob zoo, lub zog loj, siv rau qhov siab thiab qhov siab tsav lub zog; siab zog kis thiab muaj zog ultrasonic transducer; ultrasonic xws li kev ntxuav tu Cov cuab yeej hluav taws xob xws li ultrasonic vuam siv dav. Corson' s emitting ncig piezoelectric ceramic Cheebtsam yog siv dav hauv ultrasonic tu, fusion vuam, fais fab ultrasonic thiab hydroacoustic emission.
