I-Barium titanate ayiwona nje kuphela umkhiqizo wamakhemikhali obalulekile obalulekile, kodwa futhi isibe enye yezinto ezibalulekile ezibalulekile embonini ye-electronics. Kuhlelo lwe-BaO-TiO2, ngaphezu kwe-BaTiO3, kunezinhlanganisela eziningana ezifana ne-Ba2TiO4, i-BaTi2O5, i-BaTi3O7 ne-BaTi4O9 enezilinganiso ezihlukene ze-barium-titanium. Phakathi kwazo, i-BaTiO3 inenani elikhulu kakhulu elisebenzayo, futhi igama layo lamakhemikhali yi-barium metatitanate, eyaziwa nangokuthi i-barium titanate.

1. Izakhiwo ze-Physicochemical ofI-nano barium titanate(nano BaTiO₃)

1.1. I-Barium titanate iyimpushana emhlophe enephuzu lokuncibilika elingaba ngu-1625°C kanye namandla adonsela phansi angu-6.0. Iyancibilika ku-concentrated sulfuric acid, hydrochloric acid kanye ne-hydrofluoric acid, kodwa ayincibiliki ku-hot dilute nitric acid, amanzi kanye ne-alkali. Kunezinhlobo ezinhlanu zokuguqulwa kwekristalu: ifomu lekristalu eliyi-hexagonal, ifomu le-cubic crystal, ifomu lekristalu le-tetragonal, ifomu lekristalu elingunxantathu kanye nefomu lekristalu le-orthorhombic. Okuvame kakhulu yi-tetragonal phase crystal. Uma i-BaTiO2 ingaphansi kwenkambu kagesi yamanje, umthelela we-polarization oqhubekayo uzokwenzeka ngaphansi kwephoyinti le-Curie elingu-120°C. I-polarized barium titanate inezici ezimbili ezibalulekile: i-ferroelectricity kanye ne-piezoelectricity.

1.2. I-dielectric constant iphakeme kakhulu, okwenza i-nano barium titanate ibe nezindawo ezikhethekile ze-dielectric, futhi isiphenduke into ebaluleke kakhulu phakathi kwezingxenye zesekethe ephezulu. Ngesikhathi esifanayo, ugesi onamandla usetshenziswa futhi ekukhuliseni imidiya, ekuguquleni imvamisa kanye namadivayisi okugcina.

1.3. Inogesi omuhle we-piezoelectricity. I-Barium titanate ingeyohlobo lwe-perovskite futhi ine-piezoelectricity enhle. Ingasetshenziswa ekuguquleni amandla okuhlukahlukene, ukuguqulwa komsindo, ukuguqulwa kwesignali kanye ne-oscillation, i-microwave kanye nezinzwa ezisekelwe kumasekhethi alinganayo e-piezoelectric. izingcezu.

1.4. I-Ferroelectricity yisimo esidingekayo ukuze kube khona eminye imiphumela. Umsuka wogesi we-ferroelectricity uvela ekuhlukaniseni okuzenzakalelayo. Ezitshalweni zobumba, imiphumela ye-piezoelectric, pyroelectric, kanye ne-photoelectric yonke isuka ekuhlukanisekeni okubangelwa ukuhlukaniswa okuzenzakalelayo, izinga lokushisa noma inkambu kagesi.

1.5. Umphumela omuhle we-coefficient wokushisa. Umthelela we-PTC ungabangela ukuguquka kwesigaba se-ferroelectric-paraelectric kundaba ngaphakathi kwebanga lamashumi amadigri aphezulu kunethempelesha ye-Curie, futhi ukumelana nezinga lokushisa kwegumbi kukhuphuka kakhulu ngama-oda ambalwa obukhulu. Ngokusebenzisa lokhu kusebenza, izingxenye ze-ceramic ezingezwani nokushisa ezilungiswe nge-BaTiO3 nano powder zisetshenziswe kabanzi kumadivayisi okuphepha ocingo alawulwa uhlelo, iziqalisi zenjini yezimoto, izishicileli ezizenzakalelayo zama-TV anemibala, iziqalisi zama-compressor asefrijini, izinzwa zokushisa, nezivikeli ezishisa kakhulu, njll..

2. Ukusetshenziswa kwe-barium titanate nano

I-Barium titanate ingumzimba kagesi wesithathu osanda kutholakala oqinile ngemuva kwesistimu kasawoti ephindwe kabili ye-potassium sodium tartrate kanye nomzimba oqinile kagesi wesistimu ye-calcium phosphate. Ngenxa yokuthi iwuhlobo olusha lomzimba kagesi oqinile ongancibiliki emanzini futhi unokumelana nokushisa okuhle, unenani elikhulu elisebenzayo, ikakhulukazi kubuchwepheshe be-semiconductor kanye nobuchwepheshe bokufakelwa.

Isibonelo, amakristalu ayo anemingcele ephezulu ye-dielectric engaguquki kanye ne-thermal variable, futhi asetshenziswa kabanzi njengamavolumu amancane, ama-microcapacitor amakhulu kanye nezingxenye zesinxephezelo sokushisa.

Inezici zikagesi ezizinzile. Ingasetshenziselwa ukukhiqiza izingxenye ezingezona umugqa, ama-amplifiers e-dielectric kanye nezingxenye zenkumbulo yekhompiyutha ye-elekthronikhi (inkumbulo), njll. Ibuye ibe nezakhiwo ze-piezoelectric zokuguqulwa kwe-electromechanical, futhi ingasetshenziswa njengengxenye yezinto zamadivayisi afana ne-cartridge player player, amadivaysi okubona amanzi angaphansi komhlaba. , kanye namajeneretha e-ultrasonic.

Ngaphezu kwalokho, ingasetshenziswa futhi ukwenza ama-electrostatic transformers, ama-inverters, ama-thermistors, ama-photoresistors kanye nezingxenye zobuchwepheshe be-elekthronikhi ezincane zefilimu.

I-Nano barium titanateiyimpahla eyisisekelo yezinto zobumba ze-elekthronikhi, eyaziwa ngokuthi insika yemboni ye-ceramic ye-elekthronikhi, futhi ingenye yezinto ezisetshenziswa kakhulu nezibaluleke kakhulu ezitshalweni zobumba zikagesi. Njengamanje, isetshenziswe ngempumelelo kuma-thermistors e-PTC, ama-multilayer ceramic capacitors (MLCC), izakhi ze-pyroelectric, izitsha zobumba ze-piezoelectric, i-sonar, izakhi zokuthola imisebe ye-infrared, ama-crystal ceramic capacitor, amaphaneli wokubonisa i-electro-optic, izinto zokukhumbula, izinto zokwakha ze-semiconductor, ama-electrostatic transformers. , ama-amplifiers e-dielectric, iziguquli zemvamisa, izinkumbulo, izinhlanganisela ze-polymer matrix kanye nama-coatings, njll.

Ngokuthuthuka kwemboni ye-elekthronikhi, ukusetshenziswa kwe-barium titanate kuzoba kubanzi.

3. Umkhiqizi we-Nano barium titanate-Hongwu Nano

I-Guangzhou Hongwu Material Technology Co., Ltd. inokunikezwa kwesikhathi eside nezinzile kwezimpushana zekhwalithi ephezulu ze-nano barium titanate ngamaqoqo anamanani ancintisanayo. Zombili izigaba ze-cubic kanye ne-tetragonal ziyatholakala, ezinobubanzi bezinhlayiyana ezingama-50-500nm.