ʻAʻole ʻo Barium titanate wale nō kahi huahana kemika maikaʻi, akā ua lilo pū kekahi o nā mea waiwai nui i ka ʻoihana uila.Ma ka ʻōnaehana BaO-TiO2, ma waho aʻe o BaTiO3, aia kekahi mau pūhui e like me Ba2TiO4, BaTi2O5, BaTi3O7 a me BaTi4O9 me nā lākiō barium-titanium like ʻole.Ma waena o lākou, ʻo BaTiO3 ka waiwai kūpono loa, a ʻo kona inoa kemika ʻo ka barium metatitanate, ʻo ia hoʻi ka barium titanate.

1. Na waiwai kino kemika onano barium titanate(nano BaTiO₃)

1.1.ʻO ka Barium titanate he pauka keʻokeʻo me kahi helu heheʻe ma kahi o 1625 ° C a me kahi gravity kikoʻī o 6.0.Hiki ke hoʻoheheʻe ʻia i loko o ka sulfuric acid concentrated, hydrochloric acid a me hydrofluoric acid, akā ʻaʻole hiki ke hoʻoheheʻe ʻia i ka wai nitric dilute wela, ka wai a me ka alkali.ʻElima ʻano hoʻololi aniani: ʻano aniani hexagonal, ʻano aniani cubic, ʻano aniani tetragonal, ʻano aniani trigonal a me ke ʻano aniani orthorhombic.ʻO ka mea maʻamau ʻo ia ka tetragonal phase crystal.Ke hoʻokau ʻia ʻo BaTiO2 i kahi māla uila kiʻekiʻe, e loaʻa kahi hopena polarization mau ma lalo o ke kiko Curie o 120°C.ʻElua mau waiwai koʻikoʻi ka polarized barium titanate: ferroelectricity a me piezoelectricity.

1.2.He kiʻekiʻe loa ka paʻa o ka dielectric, kahi i loaʻa ai ka nano barium titanate i nā waiwai dielectric kūikawā, a ua lilo i mea waiwai nui i waena o nā ʻāpana kaapuni kiʻekiʻe.I ka manawa like, hoʻohana ʻia ka uila ikaika i ka hoʻonui ʻana i ka media, ka hoʻololi pinepine ʻana a me nā mea mālama.

1.3.Loaʻa iā ia ka piezoelectricity maikaʻi.No ke ʻano perovskite ʻo Barium titanate a loaʻa iā ia ka piezoelectricity maikaʻi.Hiki ke hoʻohana ʻia i ka hoʻololi ʻana o ka ikehu, ka hoʻololi ʻana i ke kani, ka hoʻololi ʻana o ka hōʻailona a me ka oscillation, microwave a me nā mea ʻike e pili ana i nā kaʻa like piezoelectric.ʻāpana.

1.4.ʻO ka Ferroelectricity kahi kūlana kūpono no ke ola ʻana o nā hopena ʻē aʻe.ʻO ke kumu o ka ferroelectricity mai ka polarization kuʻuna.No nā seramika, nā hopena piezoelectric, pyroelectric, a me photoelectric nā mea a pau mai ka polarization i hoʻokumu ʻia e ka polarization spontaneous, ka wela a i ʻole ke kahua uila.

1.5.ʻO ka hopena coefficient wela maikaʻi.Hiki i ka hopena PTC ke hoʻololi i ka pae ferroelectric-paraelectric i loko o ka laulā o nā ʻumi degere kiʻekiʻe aʻe ma mua o ka mahana Curie, a piʻi nui ka resistivity wela o ka lumi e kekahi mau kauoha o ka nui.ʻO ka hoʻohana ʻana i kēia hana, ua hoʻohana nui ʻia nā ʻāpana seramika wela i hoʻomākaukau ʻia me ka pauka BaTiO3 nano i nā polokalamu palekana kelepona i hoʻokele ʻia e ka polokalamu, nā mea hoʻomaka kaʻa kaʻa, nā degaussers aunoa no nā TV kala, nā mea hoʻomaka no nā mea hoʻoheheʻe pahu hau, nā ʻike wela, a me nā mea pale wela, etc..

2. Hoʻohana i ka barium titanate nano

ʻO Barium titanate ke kolu o ke kino uila ikaika hou i ʻike ʻia ma hope o ka ʻōnaehana paʻakai pālua o ka potassium sodium tartrate a me ke kino uila ikaika o ka ʻōnaehana calcium phosphate.No ka mea, he ʻano hou ia o ke kino uila ikaika ʻaʻole hiki ke hoʻoheheʻe ʻia i ka wai a maikaʻi ke kūpaʻa wela, he waiwai kūpono loa ia, ʻoi aku ka ʻenehana semiconductor a me ka ʻenehana insulation.

No ka laʻana, ʻo kona mau kristal he kiʻekiʻe dielectric mau a me nā ʻāpana hoʻololi wela, a hoʻohana nui ʻia e like me ka liʻiliʻi liʻiliʻi, nā microcapacitors nui a me nā ʻāpana uku.

Loaʻa iā ia nā waiwai uila paʻa.Hiki ke ho'ohana 'ia no ka hana 'ana i nā 'āpana nonlinear, nā mea ho'onui dielectric a me nā mea ho'omana'o kamepiula uila (memory), a me nā mea'ē a'e. , a me nā mea hana ultrasonic.

Eia kekahi, hiki ke hoʻohana ʻia no ka hana ʻana i nā mea hoʻololi electrostatic, inverters, thermistors, photoresistors a me nā mea ʻenehana uila kiʻiʻoniʻoni lahilahi.

Nano barium titanateʻO ia ke kumu kumu o nā mea uila uila, i ʻike ʻia ʻo ke kia o ka ʻoihana seramika uila, a ʻo kekahi o nā mea i hoʻohana nui ʻia a koʻikoʻi loa i nā seramika uila.I kēia manawa, ua hoʻohana maikaʻi ʻia i nā thermistors PTC, multilayer ceramic capacitors (MLCC), pyroelectric element, piezoelectric ceramics, sonar, infrared radiation detection elements, crystal ceramic capacitors, electro-optic display panels, memory material, semiconductor material, electrostatic transformers. , nā mea hoʻonui dielectric, nā mea hoʻololi pinepine, nā hoʻomanaʻo, nā mea hoʻohui polymer matrix a me nā uhi, etc.

Me ka hoʻomohala ʻana o ka ʻoihana uila, e ʻoi aku ka nui o ka hoʻohana ʻana i ka barium titanate.

3. Nano barium titanate mea hana-Hongwu Nano

ʻO Guangzhou Hongwu Material Technology Co., Ltd. he lako no ka manawa lōʻihi a paʻa o nā pauka nano barium titanate kiʻekiʻe i nā pūʻulu me nā kumukūʻai hoʻokūkū.Loaʻa nā ʻāpana cubic a me nā tetragonal, me ka nui o ka nui o ka 50-500nm.