Titanium alloy
Titanium alloy hais txog ntau yam titanium thiab lwm yam hlau ua los ntawm cov hlau alloy, siab zog, zoo corrosion kuj, siab kub tsis kam. Titanium alloy yog dav siv nyob rau hauv zus tau tej cov aircraft engine compressor qhov chaw, skeleton, daim tawv nqaij, fasteners thiab tsaws iav. Titanium kuj tseem siv rau hauv foob pob hluav taws, cuaj luaj thiab cov khoom siv rau cov dav hlau ceev.
Titanium yog ib qho isomer, melting point yog 1668 degree, qis dua 882 degree, ntom hexagonal lattice qauv, hu ua titanium; Saum toj no 882 degree, nws nthuav tawm lub cev-qhov nruab nrab cubic lattice qauv, uas yog hu ua titanium. Titanium alloys nrog cov qauv sib txawv tuaj yeem tau txais los ntawm kev ntxiv cov ntsiab lus alloying tsim nyog raws li qhov sib txawv ntawm ob lub qauv. Nyob rau hauv chav tsev kub, titanium alloys muaj peb hom matrix qauv, uas tau muab faib ua peb pawg hauv qab no: alloys, (+) alloys thiab alloys. Tuam Tshoj yog sawv cev los ntawm TA, TC thiab TB feem.
Qhov ceev ntawm titanium alloy feem ntau yog li 4.51g / cm3, tsuas yog 60% ntawm cov hlau, qee qhov siab zog titanium alloy yog ntau dua li lub zog ntawm ntau cov qauv alloy, yog li lub zog tshwj xeeb ntawm titanium alloy (lub zog / ntom) yog ntau dua. lwm cov ntaub ntawv hlau, tuaj yeem tsim lub zog siab, zoo rigidity, lub teeb qhov chaw.
Titanium yog non-toxic, lub teeb, siab zog thiab zoo heev biocompatibility, yog li nws yog ib qho zoo tagnrho cov khoom siv rau kev kho mob raws li tib neeg cog. Hauv Tebchaws Meskas, tsib titanium alloys tau raug pom zoo siv rau kev kho mob, Namely, TMZFTM (Ti-12Mo-^ Zr-2Fe), Ti-13NB-13Zr , Timetal 21SRx (Ti-15Mo-2.5NB-0.2Si), Tiadyne 1610 (Ti-16Nb-9.5Hf) thiab Ti-15Mo, Haum rau kev cog qoob loo, xws li pob txha pob txha, vascular stent, thiab lwm yam.
TiNi alloy muaj biocompatibility zoo thiab muaj ntau yam kev kho mob piv txwv siv nws cov duab nco nyhuv thiab superelasticity. Xws li thrombosis lim, spinal orthosis bar, hniav orthosis hlau, vascular stent, pob txha phaj, intramedullary koob, khoom sib koom tes,
cov khoom siv tiv thaiv kab mob, kho lub plawv, lub raum dag nrog micro twj, thiab lwm yam.
Titanium alloy khoom tuaj yeem tau txais los ntawm kev tuag casting thiab machining txoj kev. Lub melting kub ntawm titanium alloy yog siab heev, thiab cov yuav tsum tau rau pwm steel kuj siab. Titanium alloy machining txoj kev muaj ntau yam, feem ntau suav nrog: tig, milling, tho txawv, drilling, sib tsoo, tapping, sawing, edM, thiab lwm yam.
Titanium alloy machining kev ua tau zoo kuj tsis zoo. Titanium alloy txiav quab yuam tsuas yog me ntsis siab dua tib lub hardness ntawm cov hlau, tab sis feem ntau ntawm cov titanium alloy thermal conductivity tsawg heev, tsuas yog steel 1/7, 1/16 ntawm txhuas, yog li cov cua sov tsim los ntawm kev txiav yuav tsis tawg sai sai. , sib sau ua ke hauv cheeb tsam txiav, uas ua rau cov cuab yeej txiav nrawm nrawm, tawg thiab tsim cov nti nodules.
