Nitinol yog ib qho tshwj xeeb zoo ntawm lub cim xeeb alloy, uas yog tus yam ntxwv los ntawm nws lub peev xwm tuaj yeem rov qab kho nws cov duab qub tom qab ua cov yas deformation ntawm qhov kub thiab txias. Nws muaj cov khoom zoo tshaj plaws xws li yas zoo heev, hnav tsis kam, corrosion kuj, siab damping, thiab superelasticity.
(1) Kev hloov pauv theem thiab cov yam ntxwv ntawm Alloys ntawm Nickel thiab Titanium:
Nitinol, raws li nws lub npe qhia, yog binary alloy uas muaj cov nickel thiab titanium. Nws nthuav tawm ob qhov sib txawv ntawm cov qauv siv lead ua lub npe hu ua austenite thiab martensite, uas tau dhau los ntawm kev hloov pauv theem raws li qhov kub thiab txias thiab lub zog siv tshuab. Cov txheej txheem txias ntawm NiTi alloy cuam tshuam nrog theem niam txiv, R theem, thiab theem martensite. Theem austenite, cubic thiab ruaj khov ntawm qhov kub siab dua lossis thaum tsis thauj khoom, sib piv nrog lub rhombohedral R theem, thaum lub sij hawm martensite, hexagonal thiab ductile, yog tam sim no nyob rau hauv qis kub los yog nyob rau hauv load.
(2) Cov khoom tshwj xeeb ntawm Nickel-Titanium Alloys:
Cov yam ntxwv ntawm lub cim xeeb: Nitinol qhia txog kev nco tus cwj pwm, qhov twg cov khoom rov qab los rau nws cov duab qub thaum rhuab saum toj no qhov kub ntawm Af tom qab deformed nyob rau hauv martensitic theem qis dua qhov kub Mf.
Superelasticity: Nitinol nthuav tawm superelasticity, uas tso cai rau nws tiv taus cov kab mob dhau nws qhov kev txwv tsis pub dhau thaum raug rau sab nraud quab yuam. Nws tuaj yeem rov qab zoo li qub thaum tshem tawm.
rhiab heev rau intraoral kub hloov: Nyob rau hauv lub tshav pob ntawm orthodontics, stainless hlau thiab CoCr alloy xov hlau yog tsawg heev cuam tshuam los ntawm kub hloov nyob rau hauv lub qhov ncauj. Txawm li cas los xij, cov xov hlau nickel-titanium muaj qhov cuam tshuam ntau dua rau cov kev hloov pauv kub no.
Corrosion resistance: Kev tshawb fawb qhia tias qhov corrosion kuj ntawm nickel-titanium hlau yog piv rau cov hlau tsis muaj hlau.
Non-toxicity: Vim nws cov atomic muaj pes tsawg leeg, suav nrog npib tsib xee thiab titanium, Nitinol zoo nco alloy yog suav tias yog tsis muaj tshuaj lom. Txawm hais tias nickel paub tias muaj cov teebmeem carcinogenic, nws cov concentration hauv Nitinol qis dua.
Lub zog ntawm lub cev muaj zog: Ntau yam khoom siv hlau, xws li austenitic stainless hlau, cobalt-chromium-nickel alloy, npib tsib xee-chromium alloy, Australian alloy, kub alloy, thiab titanium alloy hlau, yog muag. Txhua hom hlau siv ntau theem ntawm kev quab yuam rau kev kho hniav orthodontic.
Cov yam ntxwv ntawm kev poob siab zoo heev: Cov archwire vibrations uas tshwm sim los ntawm kev zom los yog kev sib tsoo nocturnal tuaj yeem ua rau muaj kev puas tsuaj rau cov hauv paus hniav thiab cov ntaub so ntswg.
tshuaj nitrinol
titanium alloy hlau
nickel-titanium hlau los ntawm TopTiTech
(3) Kev faib tawm ntawm Nickel-Titanium Alloy Hlau (Evans thiab Durning Classification Method):
Cov kev faib tawm thaum ntxov suav nrog kub archwire, cobalt-chromium alloy hlau, thiab stainless hlau round hlau (1940s).
Martensitic stabilized alloys, feem ntau martensitic nickel-titanium alloys, tau tsim nyob rau xyoo 1960. Cov archwires no muaj qhov qis qis thiab tsim kom muaj zog kho kom haum.
Austenite-activated alloys, xws li Suav thiab Nyij Pooj nickel-titanium alloys qhia hauv xyoo 1980s, nthuav tawm tus cwj pwm austenitic tsis hais lawv qhov chaw nyob hauv lossis sab nraud ntawm qhov ncauj.
Martensite-activated nickel-titanium alloys tau tshwm sim hauv xyoo 1990. Cov alloys muaj ntau lub xeev nyob rau hauv chav tsev kub, yooj yim undergo deformation, thiab muaj ib tug transformation kub ntau yam (TTR) qis dua qhov ncauj kub los yog ze rau nws.
Qib thermodynamic npib tsib xee-titanium alloys, nrog TTR siab tshaj qhov ncauj qhov ntswg (ze li 40 degree), nyob twj ywm nyob rau hauv ntau lub xeev thaum muab tso rau hauv lub qhov ncauj kab noj hniav, uas ua rau ib tug kuj mos archwire.
(4) Clinical Applications ntawm Nickel-Titanium Alloy Hlau:
Kev sib xyaw ua ke thiab qib: Nickel-titanium alloy archwires, nrog rau lawv cov superelastic thiab zoo li lub cim xeeb, feem ntau siv nyob rau hauv thawj theem ntawm kev kho hniav vim lawv qhov qis qis-strain nkhaus.
Nickel-titanium springs: Siv nyob rau hauv orthodontics, cov springs siv lub superelasticity ntawm npib tsib xee-titanium los tsim nro los yog compression, pab nyob rau hauv cov hniav txav thiab qhib qhov sib txawv.
LH archwire: Tsim los ntawm Dr. Soma hauv Nyij Pooj, "LH" archwire, muaj npe tom qab "Low Hysteresis," nthuav tawm qhov sib txawv ntawm kev ntxhov siab tsawg kawg nkaus ntawm kev ua kom muaj zog thiab cov hniav txav, tso cai rau nws rov qab mus rau nws txoj haujlwm qub maj mam.
