Barium titanate sikuti ndi chinthu chofunikira kwambiri chamankhwala, komanso chakhala chimodzi mwazinthu zofunikira kwambiri pamakampani opanga zamagetsi.Mu dongosolo la BaO-TiO2, kuwonjezera pa BaTiO3, pali mankhwala angapo monga Ba2TiO4, BaTi2O5, BaTi3O7 ndi BaTi4O9 okhala ndi ma barium-titanium ratios.Pakati pawo, BaTiO3 ili ndi phindu lalikulu kwambiri, ndipo dzina lake lamankhwala ndi barium metatitanate, lomwe limatchedwanso barium titanate.

1. Physicochemical katundu wanano barium titanate(nano BaTiO₃)

1.1.Barium titanate ndi ufa woyera wokhala ndi malo osungunuka pafupifupi 1625 ° C ndi mphamvu yokoka ya 6.0.Imasungunuka mu sulfuric acid, hydrochloric acid ndi hydrofluoric acid, koma osasungunuka m'madzi otentha a nitric acid, madzi ndi alkali.Pali mitundu isanu ya kristalo kusinthidwa: hexagonal crystal mawonekedwe, kiyubiki crystal mawonekedwe, tetragonal crystal mawonekedwe, trigonal crystal mawonekedwe ndi orthorhombic crystal mawonekedwe.Chodziwika kwambiri ndi tetragonal phase crystal.BaTiO2 ikayatsidwa ndi mphamvu yamagetsi yapanthawiyi, kusintha kopitilira muyeso kudzachitika pansi pa Curie point ya 120°C.Polarized barium titanate ili ndi zinthu ziwiri zofunika: ferroelectricity ndi piezoelectricity.

1.2.Kukhazikika kwa dielectric ndikokwera kwambiri, komwe kumapangitsa kuti nano barium titanate ikhale ndi zida zapadera za dielectric, ndipo yakhala chinthu chofunikira kwambiri pakati pazigawo zozungulira kwambiri.Panthawi imodzimodziyo, magetsi amphamvu amagwiritsidwanso ntchito pakukweza ma media, ma frequency modulation ndi zida zosungira.

1.3.Ili ndi piezoelectricity yabwino.Titanate ya Barium ndi ya mtundu wa perovskite ndipo ili ndi piezoelectricity yabwino.Itha kugwiritsidwa ntchito pakusintha mphamvu zosiyanasiyana, kutembenuka kwa mawu, kutembenuka kwa ma siginecha ndi kugwedezeka, ma microwave ndi masensa kutengera mabwalo ofanana ndi piezoelectric.zidutswa.

1.4.Ferroelectricity ndi chinthu chofunikira kuti pakhale zotsatira zina.Chiyambi cha ferroelectricity chimachokera ku polarization modzidzimutsa.Pazida zadothi, mphamvu ya piezoelectric, pyroelectric, ndi photoelectric zonse zimachokera ku polarization yomwe imabwera chifukwa cha polarization, kutentha kapena malo amagetsi.

1.5.Zabwino kutentha coefficient zotsatira.Mphamvu ya PTC ingayambitse kusintha kwa gawo la ferroelectric-paraelectric muzinthu zomwe zili mkati mwa madigiri makumi ambiri kuposa kutentha kwa Curie, ndipo kutentha kwa chipinda kumawonjezeka kwambiri ndi maulamuliro angapo a ukulu.Pogwiritsa ntchito ntchitoyi, zida za ceramic zomwe sizimatenthedwa ndi kutentha zomwe zakonzedwa ndi BaTiO3 nano ufa zakhala zikugwiritsidwa ntchito kwambiri pazida zoyang'anira mafoni zoyendetsedwa ndi pulogalamu, zoyambira zama injini zamagalimoto, zopangira ma TV amtundu wamtundu, zoyambira zamafiriji compressor, masensa kutentha, ndi zoteteza kutenthedwa, ndi zina..

2. Kugwiritsa ntchito barium titanate nano

Barium titanate ndi gulu lachitatu lamphamvu lamagetsi lomwe lapezeka kumene pambuyo pa mchere wapawiri wa potaziyamu sodium tartrate ndi thupi lamphamvu lamagetsi la calcium phosphate system.Chifukwa ndi mtundu watsopano wa thupi lamphamvu lamagetsi lomwe silisungunuka m'madzi ndipo limakhala ndi kutentha kwabwino, limakhala ndi phindu lalikulu, makamaka mu teknoloji ya semiconductor ndi teknoloji yotsekemera.

Mwachitsanzo, makhiristo ake ali ndi magawo apamwamba a dielectric osasinthasintha komanso matenthedwe, ndipo amagwiritsidwa ntchito kwambiri ngati ma microcapacitors ang'onoang'ono, okhala ndi mphamvu zazikulu komanso zigawo zolipirira kutentha.

Ili ndi mphamvu zamagetsi zokhazikika.Itha kugwiritsidwa ntchito popanga zida zopanda malire, ma amplifiers a dielectric ndi zida zamagetsi zamagetsi zamakompyuta (chikumbutso), etc. Ilinso ndi piezoelectric properties of electromechanical conversion, ndipo ingagwiritsidwe ntchito ngati chigawo cha zipangizo monga makatiriji osewerera, zipangizo zowunikira madzi apansi. , ndi ma generator akupanga.

Kuphatikiza apo, itha kugwiritsidwanso ntchito kupanga zosinthira zamagetsi zamagetsi, ma inverters, ma thermistors, ma photoresistors ndi zida zamagetsi zamagetsi zamagetsi zamagetsi.

Nano barium titanatendi zida zopangira zida zamagetsi za ceramic, zomwe zimadziwika kuti mzati wamakampani a ceramic ceramic, komanso imodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri komanso zofunika kwambiri pamagetsi amagetsi.Pakali pano, wakhala bwino ntchito PTC thermistors, multilayer ceramic capacitors (MLCC), pyroelectric zinthu, piezoelectric ceramics, sonar, infuraredi radiation kudziwika zinthu, crystal ceramic capacitors, electro-optic kusonyeza mapanelo, zipangizo kukumbukira, zipangizo semiconductor, electrostatic thiransifoma. , ma dielectric amplifiers, ma frequency converters, kukumbukira, ma polima matrix composites ndi zokutira, etc.

Ndi chitukuko cha mafakitale a zamagetsi, kugwiritsa ntchito titanate ya barium kudzakhala kwakukulu.

3. Nano barium titanate wopanga-Hongwu Nano

Guangzhou Hongwu Material Technology Co., Ltd. ili ndi nthawi yayitali komanso yokhazikika ya ufa wapamwamba wa nano barium titanate m'magulu okhala ndi mitengo yampikisano.Magawo onse a cubic ndi tetragonal akupezeka, okhala ndi kukula kwa tinthu 50-500nm.