Ntawm ntau yam khoom siv kho mob sab hauv siv hauv orthopedics, titanium alloy daim hlau tau dhau los ua ntau dua. Lawv tsis tsuas yog txawv ntawm cov ntaub ntawv stainless hlau nyob rau hauv cov nqe lus ntawm postoperative magnetic resonance imaging compatibility tab sis kuj qhia txawv zog nyob rau hauv lwm yam.
Titanium alloys muaj qhov zoo xws li tshuaj lom neeg ruaj khov, siab biocompatibility, siab zog, thiab hnav. Yog li ntawd, lawv tau siv dav hauv kev tsim cov qauv ntawm cov khoom cog rau tib neeg lub cev. Cia peb ua tib zoo saib cov yam ntxwv thiab cov yam ntxwv ntawm cov khoom siv no.
Dab tsi yog Titanium Alloys?
Titanium alloys yog cov hlau uas muaj kev sib xyaw ntawm titanium thiab lwm yam tshuaj lom neeg. Txawm nyob rau ntawm qhov kub thiab txias, cov alloys muaj zog tensile siab thiab hardness. Lawv yog cov hnyav thiab muaj qhov tshwj xeeb corrosion kuj thiab muaj peev xwm tiv taus qhov kub thiab txias. Titanium muaj kev sib raug zoo rau cov pa oxygen atoms, uas txhais tau hais tias txawm nyob rau hauv chav tsev kub nyob rau hauv cov huab cua, ib tug nyias thiab tuab oxide txheej (TiO2) tuaj yeem tsim rau saum npoo ntawm titanium alloys. Qhov no kuj yog vim li cas titanium alloys pom zoo corrosion kuj.
Kev faib tawm ntawm Titanium Alloys
Titanium muaj nyob rau hauv ob daim ntawv siv lead ua. Nyob rau hauv chav tsev kub, non-alloy (kev lag luam ntshiab) titanium muaj ib tug kaw-packed hexagonal qauv (hcp) hu ua alpha theem. Thaum qhov kub ntawm cov ntshiab titanium nce mus txog 885 degree (hu ua beta transus kub ntawm titanium), cov qauv siv lead ua hloov mus rau hauv cubic qauv (bcc) hu ua beta theem. Kev ua tau zoo ntawm titanium alloys feem ntau yog nyob ntawm qhov kev npaj, ntim feem, thiab cov khoom ntawm alpha thiab beta theem.
