Nitinol waa daawaha xusuusta qaabka. Daawaha xusuusta qaabku waa alloy gaar ah oo si toos ah dib ugu soo celin kara qallafsanaantiisa balaastiigga ah ee qaabkeedii hore ee heerkul gaar ah, lehna caag wanaagsan.
Heerka balaadhinta ayaa ka sarreeya 20%, nolosha daalku waa ilaa 7 jeer 1 * 10, sifooyinka qoyaanku waxay 10 jeer ka sarreeyaan ilaha caadiga ah, iyo iska caabbinta daxalku way ka fiican tahay birta caafimaad ee hadda jirta, sidaa darteed waxay buuxin kartaa baahiyaha kala duwan injineernimada iyo codsiyada caafimaadka, oo waa nooc ka mid ah walxaha waxtarka leh ee aad u fiican.
Marka lagu daro qaabka gaarka ah ee shaqada xusuusta, alloys xusuusta ayaa sidoo kale leh sifooyin aad u fiican sida xirashada caabbinta, caabbinta daxalka, qoyaan sare iyo barti super.
(I) Beddelka Wejiga iyo Guryaha ee Alloys-ka Nikel-Titanium
Sida magacu soo jeediyo, Ni-Ti alloy waa daawaha binary ka kooban nikkel iyo titanium, kaas oo jira laba weji qaab dhismeedka crystal kala duwan, austenite iyo martensite, ay sabab u tahay isbedelka heerkulka iyo cadaadiska farsamo. Nidaamka isbeddelka wejiga ee Ni-Ti alloy marka qaboojintu waa wajiga waalidka (wajiga austenite) - wajiga R - marxaladda martensite. Marxaladda R waa rhombic, austenite waa gobolka marka heerkulku sarreeyo (ka weyn oo isku mid ah: ie, heerkulka austenite bilaabmaa), ama de-loaded (ciidamada dibadda ka saaray Deactivation), cubic, adag. Qaabku aad ayuu u deggan yahay. Martensite wejiga waa heerkul aad u hooseeya (in ka yar Mf: taas oo ah, heerkulka dhamaadka martensite) ama loading (dhaqdhaqaaqa ciidamada dibadda) marka gobolka, laba geesood, ductile, soo noqnoqda, ka yar xasilloon, aad u nugul deformation.
(B) sifooyinka gaarka ah ee nikkel-titanium alloy
1, qaabaynta astaamaha xusuusta (qaabka xusuusta)
2. Dusha sare (Superelasticity)
3. Dareenka isbeddelka heerkulka ee daloolka afka.
4. Iska caabinta daxalka:
5, Ka hortagga sunta:
6, Xoog jilicsan oo jilicsan
7. Guryaha nuugista naxdinta wanaagsan
Waqtiga boostada: Mar-14-2024