Barium titanate ma aha oo kaliya badeeco kiimiko ah oo wanaagsan, laakiin sidoo kale waxay noqotay mid ka mid ah alaabta ceeriin ee muhiimka ah ee lagama maarmaanka u ah warshadaha elektiroonigga ah.Nidaamka BaO-TiO2, marka lagu daro BaTiO3, waxaa jira dhowr xeryood sida Ba2TiO4, BaTi2O5, BaTi3O7 iyo BaTi4O9 oo leh saamiyo barium-titanium oo kala duwan.Waxaa ka mid ah, BaTiO3 waxay leedahay qiimaha wax ku oolka ah ee ugu weyn, magaceeda kiimikaadna waa barium metatitanate, oo sidoo kale loo yaqaan barium titanate.

1. sifooyinka physicochemical eenano barium titanate(nano BaTiO₃)

1.1.Barium titanate waa budo cad oo leh meel dhalaalaysa oo ku saabsan 1625 ° C iyo cuf-jiid gaar ah oo ah 6.0.Waxay ku milmi kartaa sulfuric acid, hydrochloric acid iyo hydrofluoric acid, laakiin aan lagu milmi karin nitric acid, biyo iyo alkali.Waxa jira shan nooc oo wax-ka-beddelid crystal ah: qaabka crystal-ka laba geesoodka ah, qaabka crystal cubic, qaabka crystal tetragonal, qaabka crystal trigonal iyo qaabka crystal orthorhombic.Kuwa ugu caansan waa wajiga tetragonal crystal.Marka BaTiO2 lagu sammeeyo garoon koronto oo hadda aad u sarreeya, saamaynta polarization joogto ah ayaa ka dhici doonta meel ka hooseysa barta Curie ee 120°C.Barium titanate polarized waxay leedahay laba sifo oo muhiim ah: ferroelectricity iyo piezoelectricity.

1.2.Joogtada dielectric waa mid aad u sarreeya, taas oo ka dhigaysa nano barium titanate in ay leeyihiin sifooyin dielectric gaar ah, oo waxay noqotay wax lagama maarmaan ah oo dhexda qaybaha wareegga-soo noqnoqda sare.Isla mar ahaantaana, koronto xooggan ayaa sidoo kale loo isticmaalaa xoojinta warbaahinta, habeynta soo noqnoqda iyo qalabka kaydinta.

1.3.Waxay leedahay piezoelectricity wanaagsan.Barium titanate waxay ka tirsan tahay nooca perovskite waxayna leedahay piezoelectricity wanaagsan.Waxaa loo isticmaali karaa beddelaad tamar kala duwan, beddelidda dhawaaqa, beddelka calaamadaha iyo oscillation, microwave iyo dareemayaal ku salaysan wareegyada u dhigma piezoelectric.gabal

1.4.Ferroelectricity waa xaalad lagama maarmaan u ah jiritaanka saameynaha kale.Asalka ferroelectricity waxay ka timaadaa polarization keligiis ah.Wixii dhoobada ah, piezoelectric, pyroelectric, iyo photoelectric saamaynta kulligood waxay ka soo jeedaan polarization-ka ay keento polarization kediska ah, heerkulka ama goobta korantada.

1.5.Saamaynta isku xidhka heerkulka wanaagsan.Saamaynta PTC waxay sababi kartaa kala-guurka wejiga ferroelectric-paraelectric ee walxaha gudaha tobanaan darajo oo ka sarreeya heerkulka Curie, iyo iska caabbinta heerkulka qolka ayaa si aad ah u kordheysa dhowr amar oo waaweyn.Ka faa'iidaysiga waxqabadkan, qaybaha dhoobada xasaasiga ah ee loo diyaariyey budada BaTiO3 nano ayaa si weyn loogu isticmaalay aaladaha amniga taleefanka ee barnaamijka lagu xakameeyo, bilowga mishiinnada baabuurta, degeusers-ka tooska ah ee TV-yada midabka, bilawga qaboojiyaha qaboojiyaha, dareemayaasha heerkulka, iyo ilaalinta kulaylka. iwm.

2. Codsiga barium titanate nano

Barium titanate waa kii saddexaad ee cusub ee la helay jidh koronto oo xooggan ka dib nidaamka milixda labanlaabka ah ee potassium sodium tartrate iyo jidhka xoogga leh ee habka fosfatka calcium.Sababtoo ah waa nooc cusub oo koronto xoog leh oo labadaba aan lagu milmi karin biyaha oo leh kulayl wanaagsan, waxay leedahay qiimo weyn oo wax ku ool ah, gaar ahaan tignoolajiyada semiconductor iyo tignoolajiyada dahaarka.

Tusaale ahaan, kiristaalo ay leeyihiin heerar dielectric joogto ah iyo kulaylka caadiga ah, oo waxaa si ballaaran loo isticmaalaa sida mugga yar, microcapacitors awood weyn iyo qaybaha magdhow heerkulka.

Waxay leedahay sifooyin koronto oo deggan.Waxaa loo isticmaali karaa in lagu soo saaro qaybo aan toos ahayn, amplifiers dielectric iyo qaybaha xusuusta kombuyuutarka elektaroonigga ah (xusuusta), iwm. Waxa kale oo ay leedahay sifooyinka piezoelectric ee beddelka elektiroonigga ah, waxaana loo isticmaali karaa walxaha qayb ka ah qalabka sida qalabka rikoodhka rikoodhka, qalabka lagu ogaanayo biyaha dhulka hoostiisa. , iyo koronto-dhaliyeyaasha ultrasonic.

Intaa waxaa dheer, waxaa sidoo kale loo isticmaali karaa in lagu soo saaro transformers electrostatic, inverters, thermistors, photoresistors iyo qaybaha tignoolajiyada elektiroonigga ah ee khafiifka ah.

Nano barium titanatewaa alaabta aasaasiga ah ee alaabta dhoobada elektiroonigga ah, oo loo yaqaan tiirka warshadaha dhoobada elektiroonigga ah, iyo sidoo kale mid ka mid ah kuwa ugu badan ee loo isticmaalo uguna muhiimsan alaabta ceeriin ee elektarooniga ah.Waqtigan xaadirka ah, waxaa si guul leh loogu isticmaalay PTC thermistors, capacitors ceramic multilayer (MLCC), walxaha pyroelectric, ceramics piezoelectric, sonar, walxaha ogaanshaha shucaaca infrared, capacitors dhoobada crystal, muraayadaha bandhiga electro-optic, alaabta xusuusta, qalabka semiconductor, transformers electrostatic , amplifiers dielectric, beddelayaasha soo noqnoqda, xusuusta, isku-dhafka polymer matrix iyo dahaarka, iwm.

Iyadoo horumarinta warshadaha elektiroonigga ah, isticmaalka barium titanate wuxuu noqon doonaa mid aad u ballaaran.

3. Nano barium titanate saaraha-Hongwu Nano

Guangzhou Hongwu Material Technology Co., Ltd. waxay leedahay sahayda muddada dheer oo xasilloon ee budada nano barium titanate oo tayo sare leh oo qiimo jaban leh.Labada weji ee cubic iyo tetragonal waa la heli karaa, iyadoo cabbirka walxaha uu u dhexeeyo 50-500nm.