Barium titanate haingori chinhu chakakosha chemakemikari chigadzirwa, asi zvakare chave chimwe chezvinhu zvinonyanya kukosha zvekushandisa muindasitiri yemagetsi. Muchirongwa cheBaO-TiO2, pamusoro peBaTiO3, pane zvinhu zvakati wandei zvakaita seBa2TiO4, BaTi2O5, BaTi3O7 neBaTi4O9 zvine mareshiyo akasiyana e-barium-titanium. Pakati pavo, BaTiO3 ine kukosha kukuru kunoshanda, uye zita rayo remakemikari inonzi barium metatitanate, inozivikanwawo sebarium titanate.

1. Physicochemical properties yenano barium titanate(nano BaTiO₃)

1.1. Barium titanate ihupfu chena ine nzvimbo yekunyunguduka inosvika 1625 ° C uye kukwezva kwe6.0. Iyo inonyungudika muyakaomeswa sulfuric acid, hydrochloric acid uye hydrofluoric acid, asi isinganyunguke mukupisa kunopisa nitric acid, mvura uye alkali. Kune marudzi mashanu ecrystal modification: hexagonal crystal form, cubic crystal form, tetragonal crystal form, trigonal crystal form uye orthorhombic crystal form. Iyo inonyanya kuzivikanwa ndeye tetragonal phase crystal. Kana BaTiO2 ichiiswa pasi pesimba remagetsi repamusoro-soro, kuenderera mberi kwepolarization kuchaitika pazasi peCurie point ye120°C. Polarized barium titanate ine zvinhu zviviri zvakakosha: ferroelectricity uye piezoelectricity.

1.2. Iyo dielectric inogara yakakwira zvakanyanya, izvo zvinoita kuti nano barium titanate ive yakakosha dielectric zvivakwa, uye yave chinhu chakakosha mukati meyakakwira-frequency circuit components. Panguva imwecheteyo, magetsi akasimba anoshandiswawo mukusimudzira midhiya, frequency modulation uye midziyo yekuchengetedza.

1.3. Iine piezoelectricity yakanaka. Barium titanate ndeyemhando ye perovskite uye ine piezoelectricity yakanaka. Inogona kushandiswa mukuchinja kwakasiyana-siyana kwesimba, kutendeuka kwezwi, kutendeuka kwechiratidzo uye oscillation, microwave uye ma sensors anobva pane piezoelectric yakaenzana masekete. zvidimbu.

1.4. Ferroelectricity ndiyo inodiwa mamiriro ekuvepo kwemamwe mhedzisiro. Kwakatangira ferroelectricity kunobva pakuita polarization. Zveceramics, iyo piezoelectric, pyroelectric, uye photoelectric mhedzisiro zvese zvinobva mukupolarization kunokonzerwa nekuzvimiririra polarization, tembiricha kana munda wemagetsi.

1.5. Positive tembiricha coefficient effect. Iyo PTC mhedzisiro inogona kukonzera ferroelectric-paraelectric chikamu shanduko muzvinhu mukati memakumi emakumi emadhigirii akakwira kupfuura tembiricha yeCurie, uye tembiricha yekamuri rekudzivirira inowedzera zvakanyanya nemirairo yakati wandei yehukuru. Tichitora mukana wekuita uku, kupisa-sensitive ceramic zvikamu zvakagadzirirwa neBaTiO3 nano poda zvakashandiswa zvakanyanya muchirongwa-chinodzorwa nhare dzekuchengetedza midziyo, mota dzinotanga injini, otomatiki degaussers yeruvara TV, matangi efiriji compressors, tembiricha sensors, uye overheat dziviriro. nezvimwewo..

2. Kushandiswa kwebarium titanate nano

Barium titanate ndiyo yechitatu ichangobva kuwanikwa yakasimba yemagetsi muviri mushure meiyo kaviri munyu system ye potassium sodium tartrate uye yakasimba yemagetsi muviri we calcium phosphate system. Nekuti irudzi rutsva rwemuviri wakasimba wemagetsi izvo zvese zvisinganyunguriki mumvura uye zvine kunaka kwekupisa kupisa, ine hukuru hunoshanda kukosha, kunyanya mune semiconductor tekinoroji uye tekinoroji yekuisa.

Semuenzaniso, makristasi ayo ane yakakwira dielectric isingachinji uye inodziya inoshanduka paramita, uye inoshandiswa zvakanyanya sediki-vhoriyamu, yakakura-inokwana microcapacitors uye tembiricha muripo wezvikamu.

Iine zvinhu zvakagadzikana zvemagetsi. Inogona kushandiswa kugadzira zvisizvo zvisingaenzaniswi, dielectric amplifiers uye electronic computer memory components (memory), etc. Iyo inewo piezoelectric properties ye electromechanical conversion, uye inogona kushandiswa sechinhu chechikamu chemidziyo yakadai serekodhi player cartridges, pasi pemvura yekuona michina. , uye ultrasonic jenareta.

Uye zvakare, inogona zvakare kushandiswa kugadzira electrostatic transformers, inverters, thermistors, photoresistors uye dzakatetepa-firimu zvemagetsi tekinoroji zvikamu.

Nano barium titanatendiyo yakakosha zvinhu zvemagetsi ceramic zvinhu, inozivikanwa sembiru yemagetsi ceramic indasitiri, uye zvakare imwe yeanonyanya kushandiswa uye akanyanya kukosha zviwanikwa mumagetsi ceramics. Parizvino, yakashandiswa zvinobudirira muPTC thermistors, multilayer ceramic capacitors (MLCC), pyroelectric elements, piezoelectric ceramics, sonar, infrared radiation monitoring elements, crystal ceramic capacitors, electro-optic display panels, memory materials, semiconductor materials, electrostatic transformers. , dielectric amplifiers, frequency converters, ndangariro, polymer matrix macomposites uye machira, nezvimwe.

Nekuvandudzwa kweindasitiri yemagetsi, kushandiswa kwe barium titanate kuchave kwakanyanya.

3. Nano barium titanate mugadziri-Hongu Nano

Guangzhou Hongwu Material Technology Co., Ltd. ine yenguva refu uye yakagadzikana yekupihwa yemhando yepamusoro nano barium titanate poda mumabhechi ane mitengo yemakwikwi. Ese ari maviri cubic uye tetragonal nhanho anowanikwa, ane particle size range 50-500nm.