Piezoelectric ceramics yog ib hom ntaub ntawv siv cov khoom siv ceramic uas tuaj yeem hloov kho lub zog thiab hluav taws xob rau ib leeg.Nws yog cov nyhuv piezoelectric.Ntxiv rau piezoelectricity, piezoelectric ceramics kuj muaj dielectricity, elasticity, thiab lwm yam, uas tau siv dav hauv kev kho mob duab, Acoustic sensors, acoustic transducers, ultrasonic motors, thiab lwm yam.

Piezoelectric ceramics yog siv los tsim cov ultrasonic transducers, underwater acoustic transducers, electroacoustic transducers, ceramic lim, ceramic transformers, ceramic discriminators, high voltage generators, infrared detectors, nto acoustic yoj li, electro-optic Devices, igniting thiab detonating li, piezoelectric gyros, thiab lwm yam, yog siv tsis tau tsuas yog nyob rau hauv high-tech teb, tab sis kuj nyob rau hauv lub neej txhua hnub los pab tib neeg thiab tsim ib tug zoo lub neej rau tib neeg.

Nyob rau hauv Ntiaj Teb Tsov Rog II, BaTiO3 ceramics tau pom, thiab cov ntaub ntawv piezoelectric thiab lawv cov ntawv thov ua rau muaj kev vam meej.Thiabnano BaTiO3 hmoovua kom nws muaj peev xwm tsim BaTiO3 Ceramic nrog cov khoom siab dua.

Thaum kawg ntawm lub xyoo pua 20th, cov kws tshawb fawb cov ntaub ntawv los ntawm thoob plaws lub ntiaj teb pib tshawb nrhiav cov ntaub ntawv ferroelectric tshiab.Thawj thawj zaug, lub tswv yim ntawm nano cov ntaub ntawv tau nkag mus rau hauv kev tshawb fawb ntawm piezoelectric cov ntaub ntawv, uas ua rau kev tshawb fawb thiab kev loj hlob ntawm piezoelectric cov ntaub ntawv, ib tug haumxeeb khoom, fim ib tug loj breakthrough, manifested nyob rau hauv cov ntaub ntawv.Kev hloov pauv hauv kev ua tau zoo yog tias cov khoom siv kho tshuab, piezoelectric zog, thiab dielectric zog tau raug txhim kho zoo.Qhov no yuav luag tsis muaj qhov cuam tshuam zoo rau kev ua haujlwm ntawm lub transducer.

Tam sim no, txoj hauv kev tseem ceeb ntawm kev siv nano meter lub tswv yim hauv kev ua haujlwm piezoelectric cov ntaub ntawv yog txhawm rau txhim kho qee yam khoom ntawm piezoelectric cov ntaub ntawv (ntxiv cov nanoparticles sib txawv los tsim cov nano complexes hauv cov ntaub ntawv piezoelectric) thiab (siv piezoelectric nanopowders lossis Nanocrystals thiab polymers yog tsim rau hauv cov ntaub ntawv sib xyaw los ntawm tshwj xeeb txhais tau tias) 2 txoj kev.Piv txwv li, nyob rau hauv cov ntaub ntawv department ntawm Thanh Ho University, txhawm rau txhim kho lub saturation polarization thiab seem polarization ntawm ferroelectric ceramic cov ntaub ntawv, Ag nanoparticles tau ntxiv los npaj "nano-multiphase ferroelectric ceramics raws li hlau nanoparticles / ferroelectric ceramics";Xws li nano alumina (AL2O3) / PZT,nano zirconium dioxide (ZrO2)/PZT thiab lwm yam nano composite ferroelectric ceramics kom txo tau cov khoom qub ferroelectric k31 thiab ua rau kom tawg toughness;nano piezoelectric cov ntaub ntawv thiab polymers ua ke kom tau nano piezoelectric composite khoom.Lub sijhawm no peb yuav kawm txog kev npaj piezoelectric ceramics los ntawm kev sib xyaw nano piezoelectric hmoov nrog nano organic additives, thiab tom qab ntawd kawm txog kev hloov pauv ntawm piezoelectric zog thiab dielectric zog.

Peb cia siab tias yuav siv ntau thiab ntau dua ntawm cov khoom siv nanoparticles hauv piezoelectric ceramics!