Niobium Carbide phofo, NbC

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Niobium Carbide phofo, NbC

Lisebelisoa tsa mekhahlelo e mengata ke e 'ngoe ea thepa ea lihlahisoa tse ngata tsa ceramic. Lisebelisoa tse nang le mekhahlelo e mengata ea letsopa tse hlahisoang hangata ke tsa ho thatafala, ntlha e phahameng ea ho qhibilihisa, botsitso bo botle ba lik'hemik'hale le ho khanna e sebelisoa likarolong tse sa keneleng liaparo, lisebelisoa tsa ho itšeha le li-electrode.


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Carbide ea Niobium
Tekanyo ea lik'hemik'hale: Nbcnt: 3500. C
Ntlha ea ho belisoa: 4300. C
Boikarabello: 7. 6g / ml ka 25 "C (eona)
Sebopeho sa thepa ea likarolo tse ngata (1) li-ceramics tsa mekhahlelo e mengata ke e 'ngoe ea thepa ea molaleng ea lisebelisoa tse ngata tsa letsopa. Lisebelisoa tsa ceramic tse nang le mekhahlelo e mengata li hlahisoa hangata e le sebaka se thata sa ho qhibiliha, botsitso bo botle ba lik'hemik'hale le ho khanna se sebelisoa likarolong tse sa keneleng liaparo, lisebelisoa tsa ho itšeha le li-electrode (2) carbide e tiisitsoeng e ke ke ea sebelisoa feela ho thibela kholo ea lijo-thollo tse samente, empa hape e ka theha karolo ea boraro le WC le Co hammoho le li-carbide tse ling, tse ntlafatsang ka mokhoa o ikhethileng ho thatafala ha mocheso le ho hanyetsa mocheso oa cementedcarbide Impact, mocheso le khatello ea khatello. Kaha niobium carbide e na le menyetla ea ho ntlafatsa thatafalo ea motsoako le ho ntlafatsa ho robeha ha motsoako, e ka sebelisoa ho lokisa lisebelisoa tsa lisebelisoa tsa carbide tse nang le ts'ebetso e ntle ea ho itšeha. 3) Karolo e thata ea niobium carbidehard ea eleketrode e kenang kahare e kena mohahong oa sebapali sa marang-rang, e le hore lera la ho tjheseletsa le be le masapo a sa roaleng a betere, mme khanyetso ea liaparo e ntlafetse haholo. Motsoako oa khanyetso oa ho tsofala oa motlakase ona o phahametse makhetlo a 1.2-1.8 ho feta tšepe e koetsoeng ea 45 (HRC50) le makhetlo a 2.43.6 ho feta motsoako oa Fe-cr-cb o sa keneng. Ka nako e ts'oanang, lera le kenang manganga le koahelang ha le hloke ho futhumala ha le tjheseletsa .and e ka hlaha holim'a bokaholimo ba mosebetsi. Metsoako e menyenyane e hlahisitsoeng kaholimo e ka lokolla khatello ea leqhubu le kaholimo mme e ke ke ea hasana ka har'a thepa ea motheo. Karolo ea matlafatso ea tšepe Ho eketsa palo e nyane ea niobium carbide molemong oa ho etsa tšepe ho ka fihlela katleho ea ho matlafatsa pula le ho matlafatsa kristale e ntle, ka ho etsa joalo ho ntlafatsa litšobotsi tse akaretsang tsa tšepe. (4) Lisebelisoa tsa Aerospace li sebelisoa e le lisebelisoa tsa Chemicalbook bakeng sa ho hlophisa lisebelisoa tsa manyaerospace

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Carbide ea Niobium
CAS (12069-94-2
LIEKETSENG EINEC. 235-117-8
thepa ea physico-chemical
Niobium carbide ke botala ba kristale ea khubiki e benyang ka tšepe ebile ke ea tsamaiso ea sodium chloride cubic crystal.
A lekanyelitsoeng segokanyipalo 8.47, lekhoakhoa kamehla A = 0.447nm,
Qhibiliha ntlha ke 3500 ℃. Microhardness> 23.5 Gpa (> 2400 kg / mm2), e thata ho feta corundum. 338000 N / e ne e le elastic modulus, coefficient ea mocheso oa mocheso oa 6.65 * 10 ^ (6) / K, mocheso o futhumatsang oa 14 w / (m K), o hlahisa mocheso - 140.7 kJ / mol, mocheso o itseng oa 36.8 J / (mol · K), resistivity ea 35 mu Ω · cm.
Ha e kene metsi a chesang le a batang a hydrochloric acid, sulfuric acid, nitric acid, e qhibilihang ka har'a acid e chesang ea hydrofluoric le nitric acid e tsoakiloeng. Tsitsitseng ka 1000 ~ 1100 ℃ le ka potlako oxidized ho niobium pentoxide e ka holimo 1100 ℃. Niobium carbide e bonolo ho kenngwa ka har'a titanium carbide, zirconium carbide, tungsten carbide le metsoako e meng, 'me hammoho ho etsa motsoako o tšoanang o tiileng oa tharollo. Qhibiliha ntlha: 3500 ℃, segokanyipalo: 7.6g / cm, (25 ℃) tšebeliso
E le tlatsetso ea carbide alloy e thata, ke karolo ea tharollo ea ternary le quaternary carbide e tiileng, joalo ka sistimi ea WC-NBC-C. Hape e ka etsa lehakoe la maiketsetso le pherese.
Polycarbides e ipapisitse le eona, joalo ka lits'ebetso tsa nako e telele tsa NBC-WC-C, e ka sebelisoa e le lisebelisoa tsa nozzle leining bakeng sa lits'ebetso tsa Aerospace.
Niobium carbide (NbC) ke "green" ea "cubic" e nang le "metallic luster" 'me ke ea tsamaiso ea sodium chloride cubic crystal. Ke mofuta oa ntlha e phahameng e qhibilihisang, lintho tse thata tsa ho thatafala, tse sebelisoang haholo linthong tse chesang tse phahameng tsa mocheso le motsoako o thata oa motsoako.
E le tlatsetso ea carbide, ke karolo ea tharollo ea ternary le quaternary carbide e tiileng, joalo ka sistimi ea WC-NBC-C ternary. Hape e ka etsa lehakoe la maiketsetso le pherese.
Niobium carbide e na le botsitso bo botle ba lik'hemik'hale le ts'ebetso e phahameng ea mocheso. Ha e kenelle ka asiti e chesang le e batang ea hydrochloric acid, sulfuric acid, nitric acid, e qhibilihang ka har'a asiti e chesang ea hydrofluoric le nitric acid e tsoakiloeng; Motsoako o ne o kopantsoe le titanium carbide, zirconium carbide, tungsten carbide le metsoako e meng, 'me motsoako o ile oa hlahisoa hammoho. Tsitsitseng ka 1000-1100 ℃ le ka potlako oxidized ho niobium pentoxide e ka holimo 1100 ℃. Ka kakaretso, e tletse ka libotlolo tsa polasetiki kapa mekotla ea aluminium foil ka har'a lebokose.

(2) Ts'ebeliso ea sehlahisoa: Ts'ebeliso ea lisebelisoa tse kopaneng: - cup duplex: e le e 'ngoe ea lisebelisoa tsa duplex ceramic, e entsoeng ka thepa ea ceramic ea niobium carbide e nang le thatafalo e phahameng, ntlha e qhibilihisang, botsitso bo botle ba lik'hemik'hale le motlakase oa motlakase, hangata sebelisoa ka likarolo qhoaele manganga, cemented carbide itšeha lisebelisoa le libakeng eleketrode: eseng feela ka sebelisoa e le samente carbide lijo-thollo kgolo sesitisa, empa hape le carbides tse ling thehoa ka ntle ho WC le Co boraro dispersoid, haholo ntlafatsa carbide chesang thatafala le mogote Nobiobium carbide le ho ntlafatsa ho thatafala ha motsoako le ho ntlafatsa fracture toughness ea motsoako, joalo-joalo, kahoo, ho ka sebelisoa bakeng sa ho lokisetsa tsa ho itšeha tshebetso ya samente carbide itšeha thepa sesebelisoa le niobium carbide ka etswa ka pherese lehakoe la maiketsetso - le koahela eleketrode, tiileng niobium carbide mohato o thata mokhatlong o thata oa lera, etsa weldin g lera le na le masapo a matle a sa roaleng, ho senyeha ho ntlafatsa haholo ts'epe e koahelang ea eleketrode e kenang ka manganga, ts'ireletso ea eona ea ho roala ho feta ea tšepe e koetsoeng ea 45 # (HRC50) 1.2 makhetlo a 1,8 ho feta ho Fe - Cr - C - B e sebetsang -e feta makhetlo a 2,4 ho isa ho a 3.6 a ho hanyetsaLi-welds ka nako e le 'ngoe, lera le kenang le koahelang le sa koaheleng ntle le ho futhumatsa pele, le fumaneha ka ho tjheseletsa bokaholimo ba sefahleho, mapetso a manyane a ka hlahisa khatello ea lera le ho se hasane kahare ho karolo ea motsoali ea tšepe le tšepe. ts'ebetsong ea tšepe ea tšepe e entsoeng ka tšepe, e ka fihlella phello ea ho matlafatsa pula le ho matlafatsa lijo-thollo, e le ho ntlafatsa likarolo tsa mochini oa tšepe, likarolo tsa Aerospace: tse sebelisetsoang turbine rotor blade engine nozzle jet vane lining and nuclear reactor structure and lisebelisoa tse ling tse ngata tsa ho fofa li lokisa likarolo ts'ebelisong ea lisebelisoa tsa ho roala: - shoa tšepe barbotage: niobi um carbide joalo ka li-carbide tsa tšepe, e na le matla a phahameng haholo a mocheso le ho hanyetsa abrasion ka hona e sebelisitsoeng ho lipontšo tsa tšepe tse ka ntlafatsang ts'ireletso ea die die wear - tšepe barbotage ea tšepe: ka tšepe ea matrix e nang le likarolo tse ngata tsa niobium carbide ea workpiece. holim thatafala e eketseha haholo, ka fihlela HV2800 ka holimo, ka nako e tšoanang, ho ntlafatsa mocheso sebetsa ea segokanyipalo workpiece le mokhatlo o hlophisitsoeng, e le ho lelefatsa bophelo ba eona ba tšebeletso ka lik'hemik'hale mokelikeli mohato thulaganyou e deposition ka hlokomela barbotage niobium carbide holim lahleloa masale a tšepe a piston, ho roala le thepa ea motheo hammoho le tse matla; Lesale lena la piston le koahelang le na le sebopeho se setle sa polokelo, le melemo ea ho thatafala ka bobeli, e ka fokotsoa haholo ntle le setlolo sa ho tlotsa le sekhahla sa khohlano ha disele enjene oli setlolo, ho ntlafatsa haholo ho tsofala ho hanyetsa, ho ka fokotsa khohlano tahlehelo ea enjene ea disele ka nako e ts'oanang, ntlafatsa ts'ebetso ea enjene ea disele - tse ling tsa niobium carbide barbotage: sepakapaka sa likarolo tse phahameng tsa mocheso o sebelisang niobium carbide barbotage, se ka etsa hore bophelo ba sona ba ts'ebeletso bo ntlafale haholo indastering ea elektroniki, methapo ea elektroniki e kenellang e sebelisa crafalt ea crafalt e nang le carbide ea niobium, ho ntlafatsa sekhahla sa radiation ho Ho theola mocheso oa marang-rang le ho fokotsa mocheso o futhumetseng o na le tšusumetso e kholo, e le ho lelefatsa bophelo ba methapo ea elektroniki ts'ebelisong ea tlhahiso ea tšepe ea niobium: mokhoa o ka sehloohong oa phokotso o sa sebelisoeng o sebelisoa ho hlahisa tšepe niobium, tlhahiso ea niobium carbide e sebelisitsoeng pele ho fokotsa, 'me niobium pentoxide e hlahisitse tšepe e teteaneng ea niobium, e etselitsoeng ho hloekisa tšepe e phahameng ea niobium, Niobium carbide e ka tsamaisa phokotso ho hlahisa tšepe e hloekileng ea niobium niobium pentoxide.

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