Ke Eng e Etsang Hore Lithupa Tsa Niobium e be Tsa Bohlokoa Bakeng sa Tikoloho e Phahameng ea Mocheso?

Sebakeng sa lisebelisoa tsa mocheso o phahameng, molamu oa niobiums li hlahile e le likarolo tsa bohlokoa ka lebaka la thepa ea tsona e ikhethang le ts'ebetso ea tsona. Melamu ena ea tšepe e feto-fetohang e bapala karolo ea bohlokoa liindastering tse fapaneng, ho tloha sebakeng sa sefofane ho ea ho matla a nyutlelie, moo ho hanyetsa mocheso o feteletseng ho leng bohlokoa haholo. Sengoliloeng sena se shebisisa litšobotsi tse ikhethang tse etsang hore lithupa tsa niobium e be tsa bohlokoa bakeng sa tikoloho ea mocheso o phahameng, ho hlahloba liphahlo tsa tsona tse sireletsang, ts'ebetso ea libopi tsa vacuum, le thepa ea ho holisa mocheso.

Liaparo tse sireletsang bakeng sa lithupa tsa niobium mochesong o feteletseng

Ha ho tluoa tabeng ea ho mamella mocheso o feteletseng, li-rods tsa niobium lia ipabola. Leha ho le joalo, ho ntlafatsa bokhoni ba bona, hangata ho sebelisoa litlolo tse sireletsang. Liaparo tsena li sebeletsa merero e mengata, ho kenyelletsa:

• Khanyetso ea oxidation: Niobium, joalo ka litšepe tse ngata tse refractory, e ka hlaseloa habonolo ke oxidation ka mocheso o phahameng. Liaparo tse khethehileng li ka ntlafatsa haholo khanyetso ea eona ea oxidation, ea lumella melamu ho boloka botšepehi ba bona libakeng tse nang le oksijene e ngata.
• Tšireletso ea kutu: Lits'ebetsong tse ling tsa mocheso o phahameng, likarolo tse senyang li ka ba teng. Liaparo tse sireletsang li ka sireletsa lithupa tsa niobium tlhaselong ea lik'hemik'hale, tsa lelefatsa bophelo ba tsona le ho boloka ts'ebetso ea tsona.
• Thibelo ea mocheso: Liaparo tse ling li sebetsa e le mekoallo ea mocheso, ho fokotsa mocheso o fetisang mokokotlo oa niobium rod. Sena se ka ba molemo haholo lits'ebetsong moo taolo ea mocheso e leng bohlokoa.

Lisebelisoa tse tloaelehileng tsa ho roala bakeng sa lithupa tsa niobium kenyeletsa:

• Li-Silicides: Metsoako ena e etsa lera le sireletsang la silicon dioxide ha e le mochesong o phahameng, e fana ka khanyetso e ntle ea oxidation.
• Li-aluminium tse entsoeng ka aluminium li fana ka tšireletso e ntle ea oxidation 'me li khona ho mamella mocheso ho fihlela ho 1400 ° C.
• Liaparo tsa Ceramic: Lisebelisoa tse kang yttria-stabilized zirconia (YSZ) li fana ka mocheso o phahameng oa mocheso le ho hanyetsa oxidation.

Khetho ea seaparo se loketseng se ipapisitse le litlhoko tse ikhethileng tsa kopo, ho kenyeletsoa sebaka sa mocheso, sepakapaka, le nako ea ho pepeseha. Mekhoa e tsoetseng pele ea ho roala, joalo ka k'hemik'hale ea mouoane oa lik'hemik'hale (CVD) le "physical vapor deposition" (PVD), e netefatsa likarolo tse ts'ireletso tse ts'oanang le tse khomarelang holim'a lithupa tsa niobium.

Li-rod tsa niobium li sebetsa joang lits'ebetsong tsa sebōpi sa vacuum?

Lisebelisoa tsa vacuum li bohlokoa liindastering tse ngata tsa theknoloji e phahameng, ho kenyeletsoa tlhahiso ea semiconductor, tlhahiso ea likarolo tsa sefofane, le lipatlisiso tsa thepa. Li-rod tsa Niobium li fumane niche lits'ebetsong tsena ka lebaka la litšobotsi tsa tsona tse ikhethang tsa ts'ebetso:

• Khatello e tlase ea mouoane: Niobium e na le khatello e tlase ea mouoane e tlase haholo mochesong o phahameng, e etsang hore e be e loketseng ho sebelisoa libakeng tse nang le vacuum e phahameng. Thepa ena e tiisa tšilafalo e fokolang ea sepakapaka sa sebōpi le lisebelisoa tsa mosebetsi.
• Sebaka se phahameng sa ho qhibiliha: Ka ntlha ea ho qhibiliha e ka bang 2,477 ° C (4,491 ° F), lithupa tsa niobium li ka mamella mocheso o feteletseng oo hangata o kopanang le oona ka har'a libopi tsa vacuum ntle le kotsi ea ho qhibiliha kapa ho senyeha.
• Ts'ebetso e ntle ea mocheso: Ts'ebetso ea mocheso oa Niobium e lumella ho fetisoa ha mocheso hantle ka har'a sebōpi, ho kenya letsoho ho futhumala ho tšoanang ha lisebelisoa tsa mosebetsi.
• Ho hanyetsa mocheso oa mocheso: Lithupa tsa Niobium li ka mamella liphetoho tse potlakileng tsa mocheso ntle le ho phatloha kapa ho hloleha, e leng tšobotsi ea bohlokoa lits'ebetsong tsa ho futhumatsa ka cyclic.

Lisebelisoa tsa sebōpi sa vacuum, lithupa tsa niobium sebetsa mesebetsi e fapaneng:

• Lintho tse futhumatsang: Ka lebaka la sebaka se phahameng sa ho qhibiliha le motlakase oa tsona, lithupa tsa niobium li ka sebelisoa e le lisebelisoa tsa ho futhumatsa ka har'a libopi tse khethehileng tsa vacuum.
• Mehaho ea ts'ehetso: Matla le botsitso ba niobium ka mocheso o phahameng o etsa hore e tšoanelehe bakeng sa ho haha ​​​​mehaho ea tšehetso ka har'a sebōpi.
• Likarolo tsa tšireletso: Lithupa tsa Niobium li ka sebelisoa ho theha lithebe tsa mahlaseli kapa li-baffles, ho thusa ho laola kabo ea mocheso ka har'a kamore ea sebōpi.

Ts'ebetso ea lithupa tsa niobium liboping tsa vacuum e matlafatsoa le ho feta ke ho lumellana ha tsona le lirafshoa tse ling le lirafshoa tse sebelisoang hangata libakeng tsena. Sena se lumella ho qaptjoa ha likopano tse rarahaneng tsa sebōpi tse ka mamellang maemo a boima ka ho fetisisa a ho sebetsa ka mocheso.

Lintho tsa ho atolosa mocheso oa lithupa tse phahameng tsa niobium

Ho utloisisa litšobotsi tsa katoloso ea mocheso oa li-niobium rods ho bohlokoa bakeng sa ts'ebetsong ea bona e sebetsang lits'ebetsong tsa mocheso o phahameng. Coefficient of thermal expansion (CTE) ea niobium ke ntlha ea bohlokoa ho khethollang boitšoaro ba eona tlas'a maemo a fapaneng a mocheso:

• CTE e tlase: Niobium e na le coefficient e batlang e le tlase ea katoloso ea mocheso ha e bapisoa le litšepe tse ling tse ngata. Ka mocheso oa kamore, CTE ea eona e ka bang 7.3 × 10 ^ -6 K^-1.
• Ho itšetleha ka mocheso: CTE ea niobium e eketseha hanyenyane ka mocheso, empa e lula e tsitsitse ho feta mefuta e mengata.
• Katoloso ea Anisotropic: Ka lithupa tse phahameng tsa niobium, katoloso ea mocheso e ka ba anisotropic, ho bolelang hore e fapana ho latela tataiso ea crystallographic. Thepa ena e bohlokoa ho nahanoa ka lits'ebetso moo botsitso ba dimensional bo leng bohlokoa.

Litšobotsi tsa ho atolosa mocheso oa lithupa tsa niobium fana ka melemo e mengata libakeng tse phahameng tsa mocheso:

• Botsitso ba sebopeho: CTE e tlase ebile e tsitsitse ea niobium e netefatsa hore lithupa li boloka litekanyo tsa tsona ho feta mocheso o pharaletseng, e leng ntho ea bohlokoa ho sebelisoa ka nepo.
• Ho fokotsa khatello ea maikutlo: Likopanong tse nang le lisebelisoa tse ngata, katoloso e tlase ea mocheso oa niobium e ka thusa ho fokotsa khatello ea mocheso ha ho kopana le likarolo tse ling.
• Ho hanyetsa libaesekele ka mocheso: Boitšoaro bo sa fetoheng ba ho atolosoa ha lithupa tsa niobium bo kenya letsoho ho hanyetsaneng ha bona le mokhathala oa mocheso nakong ea ho futhumatsa le ho pholisa khafetsa.

Bakeng sa lits'ebetso tse hlokang botsitso bo boholo le ho feta, li-alloys tsa niobium li ka etsoa enjenere ho fokotsa katoloso ea mocheso. Mohlala, li-alloys tsa niobium-zirconium li bonts'a li-CTE tse tlase ho feta niobium e hloekileng, e li etsang hore li tšoanelehe bakeng sa lits'ebetso tse nepahetseng haholo sebakeng sa sefofane le lisebelisoa tsa mahlale.

Thepa ea ho atolosa mocheso oa lithupa tsa niobium tse phahameng le tsona li phetha karolo ea bohlokoa ho kopanngoa ha tsona le lisebelisoa tse ling tsamaisong ea mocheso o phahameng. Ha ba rala likarolo kapa meaho e kenyelletsang lithupa tsa niobium, baenjiniere ba tlameha ho nahana ka hloko ka phapang ea katoloso lipakeng tsa niobium le lisebelisoa tse haufi ho thibela khatello e sa hlokahaleng kapa deformation nakong ea libaesekele tse futhumetseng.

fihlela qeto e

Motsoako o ikhethileng oa thepa e bonts'itsoeng ke lithupa tsa niobium e etsa hore e be ea bohlokoa haholo libakeng tse nang le mocheso o phahameng ho pholletsa le liindasteri tse fapaneng. Bokhoni ba tsona ba ho mamella mocheso o feteletseng, hammoho le katoloso e tlase ea mocheso le ts'ebetso e ntle haholo maemong a vacuum, li li beha e le thepa ea khetho bakeng sa lits'ebetso tse boima haholo tsa mocheso.

Ho tsoa ho litlolo tse sirelletsang tse matlafatsang khanyetso ea oxidation ts'ebetsong ea tsona ea linaleli ka har'a libopi tsa vacuum le katoloso e laoloang ea mocheso, lithupa tsa niobium li tsoela pele ho sutumelletsa meeli ea se ka khonehang ho boenjiniere ba mocheso o phahameng. Ha liindasteri li ntse li loanela ho sebetsa hantle le ho sebetsa maemong a feteletseng, karolo ea lithupa tsa niobium e na le monyetla oa ho hola ho ea pele, ho khanna boqapi ba mahlale a thepa le thekenoloji ea mocheso o phahameng.

Bakeng sa ba batlang lithupa tsa boleng bo phahameng ba niobium bakeng sa lisebelisoa tsa bona tsa mocheso o phahameng, ba se ke ba sheba hole le Baoji Freelong New Material Technology Development Co., Ltd. Joaloka moetsi ea ka sehloohong oa litšepe tse refractory le li-alloys, re sebetsa ka ho khetheha ho hlahiseng lithupa tsa niobium tsa boemo bo holimo tse finyellang litekanyetso tse thata ka ho fetisisa tsa indasteri. Boitseanape ba rona ba zirconium, titanium, nickel, le thepa ea tantalum, hammoho le boitlamo ba rona ba boleng le khotsofalo ea bareki, bo re etsa molekane ea loketseng bakeng sa litlhoko tsa hau tsa mocheso o phahameng.

Hore na o sebakeng sa sefofane, matla, kapa tlhahiso e tsoetseng pele, lithupa tsa rona tsa niobium li ka u thusa ho fihlela ts'ebetso e neng e sa lebelloa maemong a feteletseng. U se ke ua sekisetsa ka boleng ha ho tluoa tabeng ea likarolo tsa bohlokoa. Ikopanye le rona kajeno ho jenny@bjfreelong.com ho buisana ka hore na li-rod tsa rona tsa niobium li ka phahamisetsa lisebelisoa tsa hau tsa mocheso o phahameng hakae ho ea holimo.

References

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2. Patel, S., & Nguyen, H. (2020). "Niobium Alloys ho Vacuum Furnace Technologies: Tlhahlobo e Feletseng." Vacuum, 176, 109345.

3. Wang, L., & Zhang, Y. (2018). "Boitšoaro ba Katoloso ea Mocheso oa Niobium e Phahameng ea Bohloeki le Lisebelisoa tsa Eona." Thepa Saense le Boenjiniere: A, 732, 214-223.

4. Kowalski, M., & Chen, X. (2021). "Likopo tsa Niobium Rods ho Aerospace: Boemo ba Hona Joale le Litebello tsa Bokamoso." Lisebelisoa tsa Aerospace le Theknoloji, 12 (2), 145-159.