Kev ua haujlwm ntawm Piezoelectric Ceramics
Thaum ib tug voltage yog siv rau ib tug piezoelectric ceramic, mechanical deformation tshwm sim raws li ib tug muaj nuj nqi ntawm voltage thiab zaus. Ntawm qhov tod tes, thaum lub piezoelectric ceramic yog vibrated, ib qho hluav taws xob raug tsim tawm. Siv lub hauv paus ntsiab lus no, thaum lub teeb liab hluav taws xob siv rau lub vibrator uas muaj ob lub piezoelectric ceramics los yog piezoelectric ceramics thiab cov ntawv hlau, lub npe hu ua bimorph element, ultrasonic tsis yuav emissions vim dabtsi yog khoov kev co. Xwb, thaum ultrasonic vibrations yog siv rau lub bimorph keeb, ib tug hluav taws xob teeb liab yog generated. Raws li cov teebmeem saum toj no, piezoelectric ceramics tuaj yeem siv ua ultrasonic sensors.
Cov txheej txheem ndlwg yog raws li nram no: batching - sib tov thiab sib tsoo - pre-firing - thib ob sib tsoo - granulation - molding - yas tshem tawm - sintering rau hauv plooj (porcelain) - zoo li cov txheej txheem - electrode - high voltage polarization - aging test.
1. Cov khoom xyaw: nqa tawm cov khoom ua ntej ua ntej, tshem tawm cov impurities thiab noo noo, thiab tom qab ntawd ntsuas ntau yam khoom siv raw raws li qhov kev faib ua feem ntawm cov mis. Nco ntsoov tias me me ntawm additives yuav tsum muab tso rau hauv nruab nrab ntawm aniseed.
2. Kev sib xyaw thiab kev sib tsoo: Lub hom phiaj yog sib tov thiab sib tsoo ntau yam ntaub ntawv raw los npaj cov kev mob rau kev ua tiav cov tshuaj tiv thaiv-theem rau pre-sintering. Kev sib tsoo qhuav lossis ntub sib tsoo feem ntau yog siv. Kev sib tsoo qhuav tuaj yeem siv rau cov khoom me me, thiab nplawm pob milling lossis dav hlau pulverization tuaj yeem siv rau cov khoom loj, uas ua haujlwm zoo dua.
3. Kev kub hnyiab ua ntej: Lub hom phiaj yog los ua cov tshuaj tiv thaiv-theem ntawm txhua cov khoom siv raw ntawm qhov kub thiab txias los ua ke piezoelectric ceramics. Cov txheej txheem no tseem ceeb heev. Nws yuav cuam tshuam ncaj qha rau sintering tej yam kev mob thiab cov khoom ntawm cov khoom kawg.
4. Thib ob zoo sib tsoo: Lub hom phiaj yog ua kom zoo vibrate thiab sib xyaw ua ntej raug rho tawm haujlwm piezoelectric ceramic hmoov, thiaj li ua rau lub hauv paus ruaj khov rau kev ua haujlwm zoo ntawm cov ceramic.
5. Granulation: Lub hom phiaj yog ua cov hmoov ua cov granules high-density granules nrog zoo fluidity.
6. Kev tsim: Lub hom phiaj yog nias cov khoom pelletized rau hauv qhov xav tau prefabricated loj dawb paug.
7. Kev tshem tawm yas: Lub hom phiaj yog tshem tawm cov binder ntxiv thaum lub sij hawm granulation ntawm qhov khoob.
8. Sintering rau hauv cov plooj (porcelain): Cov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob Qhov no tseem ceeb heev.
9. Puab ua: Sib tsoo cov khoom raug rho tawm haujlwm kom tiav cov khoom tiav.
10. Electrode: Teem cov hluav taws xob hluav taws xob rau ntawm qhov yuav tsum tau ua ntawm ceramic nto. Txoj kev dav dav yog infiltration ntawm nyiaj txheej, tshuaj deposition thiab nqus txheej.
11. High-voltage polarization: taw qhia thiab teeb tsa cov hluav taws xob sab hauv ntawm cov ceramics, kom cov ceramics muaj piezoelectric zog.
12. Kev kuaj kev laus: Tom qab qhov kev ua tau zoo ntawm cov ceramic yog qhov ruaj khov, sim ntau yam ntsuas kom pom tias nws ua tau raws li qhov yuav tsum tau ua.
