Phofo ea Wollastonite e fetohile tlatsetso ea bohlokoa ho li-ceramic tsa ho thibela motlakase, e fanang ka ntlafatso ea bohlokoa ea ts'ebetso bakeng sa likarolo tse nang le motlakase o phahameng joalo ka li-transformer, li-circuit breaker, le li-insulator bushings. Motsoako oa eona o ikhethang oa bohloeki bo phahameng, tahlehelo e tlase ea dielectric, le botsitso ba mocheso o etsa hore e be e loketseng lits'ebetso tse hlokang ho thibela motlakase ho tšepahalang le ho qhalana ha mocheso.
Matla a dielektrike – sebaka se seholo sa motlakase seo thepa e ka se mamellang ntle le ho senyeha se ntlafala haholo ka diseramike tse nang le phofo ya wollastonite. Ka maemo a bohloeki a atisang ho feta 95% CaSiO3 le mahloriso a tlase a ditshila tse tsamaisang motlakase (jwalo ka tshepe le sodium), wollastonite e thusa ho boloka kganyetso e phahameng ya ho thibela ho kenngwa ha motlakase esita le ka di-voltage tse fetang 10kV. Ha e qhalantswe ka ho lekana ka di-matrices tsa ceramic (hangata e kopantswe le alumina kapa magnesia), dikarolwana tsa yona tsa acicular di etsa tsela e kgutlang bakeng sa motlakase wa motlakase, e thibela ho kgutla le ho netefatsa tshebetso e tsitsitseng dibakeng tse nang le motlakase o phahameng. Sena se etsa hore diseramike tse ntlafaditsweng ke wollastonite di lokele ditshebediso tsa bohlokwa moo ho hloleha ha ho thibela ho kenngwa ha motlakase ho ka lebisang tshenyong ya disebediswa kapa dikotsing tsa polokeho.
Phokotso ea masoba a motlakase ke molemo o mong oa bohlokoa oa phofo ea wollastonite ka har'a li-ceramic tsa motlakase. Nakong ea ho sinter, boholo ba likaroloana tsa eona tse nyane (li-micron tse 5-20) li tlatsa likheo lipakeng tsa likaroloana tse kholo tsa ceramic, li khothaletsa ho tiea le ho fokotsa masoba. Sebopeho sena se teteaneng ha se ntlafatse matla a mechini feela (ho fokotsa ho robeha nakong ea ho sebetsana le ts'ebetso) empa hape se thibela mongobo le ho kenella ha khase - lintlha tse ka senyang thepa ea ho thibela ho ruruha ha nako e ntse e ea. Bakeng sa li-insulator tsa kantle tse pepesehetseng pula, mongobo le tšilafalo, masoba ana a tlase a bohlokoa bakeng sa ho boloka ts'ebetso ea dielectric ea nako e telele.
Ho tsamaisa mocheso ho ntlafatswa ka hara di-ceramic tse nang le wollastonite, ho rarolla phephetso e kgolo dikarolong tse nang le motlakase o phahameng tse hlahisang mocheso o moholo nakong ya tshebetso. Ka ho tsamaisa mocheso ho ka bang 3 W/m·K (ho feta di-filler tse ngata tsa setso tsa ceramic), wollastonite e ntlafatsa phetiso ya mocheso hole le di-element tse tsamaisang motlakase, e thusa ho boloka mocheso o tsitsitseng wa tshebetso. Bokgoni bona ba taolo ya mocheso bo atolosa nako ya bophelo ba dikarolo ka ho thibela ho senyeha ha insulation ho bakwang ke mocheso, haholoholo ho bohlokwa ho di-transformer le disebediswa tsa kabo ya motlakase moo ho chesa haholo ho ka bakang ho hloleha ho hoholo.
Ho tsitsa ha mocheso o phahameng ho netefatsa hore li-ceramic tse ntlafalitsoeng ke wollastonite li sebetsa ka mokhoa o tšepahalang tlas'a potoloho ea mocheso. Diminerale e boloka sebopeho le thepa ea eona mochesong o fihlang ho 1500°C, e mamella mocheso o phahameng o kopanang le oona nakong ea tlhahiso (ho sintering) le ts'ebetsong. Ho tsitsa hona ho thibela liphetoho tsa mekhahlelo kapa ho se lumellane ha katoloso ea mocheso tse ka bakang khatello ea ka hare kapa mapetso, ho netefatsa botšepehi ba litekanyo le ts'ebetso e tsitsitseng ho pholletsa le liphetoho tsa mocheso.
Melemo ea ho sebetsana le eona e etsa hore phofo ea wollastonite e be bonolo ho e kenyelletsa mefuteng ea ceramic. E ntlafatsa matla a matala (matla a li-ceramic tse sa chesoang), e fokotsa ho robeha nakong ea ho bopa le ho sebetsana le eona. Ho monya ha eona mongobo o fokolang ho nolofatsa lits'ebetso tsa ho omisa, ha ho lumellana ha eona le li-binder tse tloaelehileng tsa ceramic ho netefatsa ho kopanya ho ts'oanang le ho theha. Bakeng sa libopeho tse rarahaneng joalo ka li-disc tsa insulator kapa li-block tsa terminal, thepa ea phallo ea wollastonite nakong ea ho bopa e thusa ho boloka ho nepahala ha litekanyo, e fokotsa litlhoko tsa kamora ts'ebetso.
Taolo ea boleng ke ea bohlokoa bakeng sa phofo ea wollastonite ea boemo ba motlakase. Bafepedi ba e beha tekong e matla bakeng sa matla a dielectric, kabo ea boholo ba likaroloana, le maemo a litšila, ho netefatsa hore e latela litekanyetso tsa indasteri tse kang litlhaloso tsa IEC (International Electrotechnical Commission). Kalafo ea bokaholimo ka li-coupling agents e ka sebelisoa ho ntlafatsa ho kopana le matrices ea ceramic, ho ntlafatsa thepa ea mechine le ea motlakase haholoanyane.
Nako ea poso: Phato-13-2025