Orthopedic Titanium Alloy Khoom
Ntawm ntau cov khoom siv kho mob sab hauv hauv orthopedics, titanium alloy steel daim hlau tau dhau los ua ntau dua. Tsis tsuas yog lawv txawv ntawm stainless hlau sab hauv fixations nyob rau hauv cov nqe lus ntawm seb magnetic resonance yuav ua tau tom qab phais, tab sis lawv kuj qhia txawv zog nyob rau hauv lwm yam.
Titanium alloys muaj qhov zoo ntawm kev ruaj ntseg zoo, biocompatibility siab, siab zog, thiab lub teeb yuag, yog li lawv tau siv dav hauv kev tsim cov qauv ntawm cov khoom cog hauv tib neeg lub cev. Cia peb saib ze dua ntawm cov khoom thiab cov yam ntxwv ntawm cov khoom siv no.
Dab tsi yog Titanium Alloys
Titanium alloy yog cov hlau uas muaj kev sib xyaw ntawm titanium thiab lwm yam tshuaj lom neeg. Cov hlau no muaj lub zog tensile siab heev thiab toughness (txawm tias thaum huab cua kub). Lawv yog cov hnyav, muaj qhov tshwj xeeb corrosion kuj thiab muaj peev xwm tiv taus qhov kub thiab txias. Titanium muaj affinity siab nrog oxygen atoms, uas txhais tau hais tias ib tug nyias tuab tuab oxide txheej (TiO2) yuav tsim nyob rau saum npoo ntawm titanium alloys nyob rau hauv chav tsev kub cua, uas kuj yog vim li cas vim li cas titanium alloys muaj zoo heev corrosion kuj.
Classification ntawm titanium alloys
Titanium muaj nyob rau hauv ob daim ntawv siv lead ua. Nyob rau hauv chav tsev kub, unalloyed (kev lag luam ntshiab) titanium muaj ib tug hexagonal kaw-packed qauv (hcp), hu ua alpha theem. Thaum qhov kub ntawm cov ntshiab titanium nce mus txog 885 degree (hu ua beta transverse kub ntawm titanium), cov qauv siv lead ua hloov mus rau hauv cubic qauv (bcc), hu ua beta theem. Cov khoom ntawm titanium alloys feem ntau yog nyob ntawm qhov kev npaj, ntim feem thiab cov khoom ntawm cov theem.
