Barium titanate ha se feela sehlahisoa sa bohlokoa sa lik'hemik'hale se setle, empa hape e fetohile e 'ngoe ea lisebelisoa tsa mantlha tsa bohlokoa indastering ea elektroniki.Ho tsamaiso ea BaO-TiO2, ho phaella ho BaTiO3, ho na le metsoako e mengata e kang Ba2TiO4, BaTi2O5, BaTi3O7 le BaTi4O9 e nang le likarolo tse fapaneng tsa barium-titanium.Har'a tsona, BaTiO3 e na le boleng bo boholo ka ho fetisisa bo sebetsang, 'me lebitso la eona la lik'hemik'hale ke barium metatitanate, e tsejoang hape e le barium titanate.

1. Physicochemical properties ofnano barium titanate(nano BaTiO₃)

1.1.Barium titanate ke phofo e tšoeu e nang le ntlha e qhibilihang e ka bang 1625 ° C le matla a khoheli a itseng a 6.0.E qhibiliha ka sulfuric acid e concentrated, hydrochloric acid le hydrofluoric acid, empa ha e qhibilihe ka har'a acid e chesang ea nitric, metsi le alkali.Ho na le mefuta e mehlano ea phetoho ea kristale: sebopeho sa kristale ea hexagonal, foromo ea kristale ea cubic, foromo ea kristale ea tetragonal, foromo ea kristale ea trigonal le foromo ea kristale ea orthorhombic.E tloaelehileng haholo ke kristale ea karolo ea tetragonal.Ha BaTiO2 e le tlas'a sebaka sa motlakase oa hona joale o phahameng, phello e tsoelang pele ea polarization e tla etsahala ka tlase ho ntlha ea Curie ea 120°C.Polarized barium titanate e na le lintho tse peli tsa bohlokoa: ferroelectricity le piezoelectricity.

1.2.Motsoako oa dielectric o phahame haholo, o etsang hore nano barium titanate e be le thepa e khethehileng ea dielectric, 'me e fetohile thepa ea bohlokoa bohareng ba likarolo tse phahameng tsa potoloho.Ka nako e ts'oanang, motlakase o matla o boetse o sebelisoa ho holisa mecha ea litaba, ho feto-fetoha ha maqhubu le lisebelisoa tsa polokelo.

1.3.E na le piezoelectricity e ntle.Barium titanate ke ea mofuta oa perovskite mme e na le piezoelectricity e ntle.E ka sebelisoa phetolong e fapaneng ea matla, phetolo ea molumo, phetolo ea lets'oao le oscillation, microwave le lisensara tse thehiloeng ho li-circuits tse lekanang tsa piezoelectric.likotoana.

1.4.Ferroelectricity ke boemo bo hlokahalang bakeng sa ho ba teng ha litlamorao tse ling.Tšimoloho ea ferroelectricity e tsoa ho polarization e ikemetseng.Bakeng sa li-ceramics, liphello tsa piezoelectric, pyroelectric, le photoelectric kaofela li tsoa ho polarization e bakoang ke polarization e ikemetseng, mocheso kapa lebala la motlakase.

1.5.Phello e ntle ea mocheso oa coefficient.Phello ea PTC e ka baka phetoho ea karolo ea ferroelectric-paraelectric ka har'a mefuta e mengata ea likhato tse mashome ho feta mocheso oa Curie, 'me mocheso oa mocheso oa kamore o eketseha haholo ka litaelo tse' maloa tsa boholo.Ho nka monyetla oa ts'ebetso ena, likarolo tsa ceramic tse sa utloeng mocheso tse lokiselitsoeng ka BaTiO3 nano phofo li 'nile tsa sebelisoa haholo lisebelisoa tsa ts'ireletso tsa mehala tse laoloang ke lenaneo, lisebelisoa tsa enjene ea likoloi, li-degauss tsa othomathike bakeng sa li-TV tsa mebala, lisebelisoa tsa li-compressor tsa sehatsetsi, li-sensor tsa mocheso le li sireletsang mocheso o feteletseng. etc..

2. Kopo ea barium titanate nano

Barium titanate ke 'mele oa boraro o sa tsoa sibolloa o matla oa motlakase ka mor'a tsamaiso ea letsoai e habeli ea potassium sodium tartrate le' mele o matla oa motlakase oa calcium phosphate system.Hobane ke mofuta o mocha oa 'mele o matla oa motlakase o ke keng oa qhibiliha ka metsing 'me o na le mocheso o motle o hanyetsanang le mocheso, o na le boleng bo botle bo sebetsang, haholo-holo theknoloji ea semiconductor le theknoloji ea ho pata.

Ka mohlala, likristale tsa eona li na le li-parameter tse fapaneng tsa dielectric kamehla le mocheso, 'me li sebelisoa haholo e le li-microcapacitor tse nyenyane, tse nang le matla a maholo le likarolo tsa matšeliso a mocheso.

E na le thepa ea motlakase e tsitsitseng.E ka sebelisoa ho etsa likarolo tse se nang moeli, li-amplifiers tsa dielectric le likarolo tsa memori ea k'homphieutha ea elektronike (memori), joalo-joalo E boetse e na le litšobotsi tsa piezoelectric tsa phetoho ea electromechanical, 'me e ka sebelisoa e le karolo ea lisebelisoa bakeng sa lisebelisoa tse kang li-cartridges tsa rekoto, lisebelisoa tsa ho lemoha metsi a ka tlas'a lefatše. , le lijenereithara tsa ultrasonic.

Ntle le moo, e ka boela ea sebelisoa ho etsa li-electrostatic transformers, inverters, thermistors, photoresistors le likarolo tsa theknoloji ea elektroniki e tšesaane.

Nano barium titanateke thepa ea mantlha ea thepa ea elektroniki ea ceramic, e tsejoang ka hore ke tšiea ea indasteri ea ceramic ea elektroniki, hape e le e 'ngoe ea lisebelisoa tse sebelisoang haholo le tsa bohlokoahali ho lirafshoa tsa elektroniki.Hajoale, e se e sebelisitsoe ka katleho ho PTC thermistors, multilayer ceramic capacitors (MLCC), pyroelectric elements, piezoelectric ceramics, sonar, infrared radiation sensor elements, crystal ceramic capacitors, electro-optic display panels, memory materials, semiconductor materials, electrostatic transformers. , li-amplifiers tsa dielectric, li-converter tsa maqhubu, mehopolo, li-composites tsa polymer matrix le likoatipa, joalo-joalo.

Ka nts'etsopele ea indasteri ea elektronike, tšebeliso ea titanate ea barium e tla ba e pharaletseng haholoanyane.

3. Nano barium titanate moetsi-Hongwu Nano

Guangzhou Hongwu Material Technology Co., Ltd. e na le phepelo ea nako e telele le e tsitsitseng ea phofo ea boleng bo holimo ea nano barium titanate ka lihlopha tse nang le litheko tsa tlholisano.Mekhahlelo ka bobeli ea li-cubic le tetragonal lia fumaneha, ka boholo ba likaroloana 50-500nm.