Kawm txog kev tiv thaiv corrosion thiab lub peev xwm kub ntawm TC4 titanium alloy

TC4 titanium alloy (Ti-6Al-4V) pom zoo corrosion kuj zoo heev nyob rau hauv complex ib puag ncig vim nws tshwj xeeb hlau configuration. Cov hlau no muaj kwv yees li 6% txhuas thiab 4% vanadium, qhov sib piv uas ua kom nws ruaj khov nyob rau hauv high-temperature thiab acid / alkali tej yam kev mob. Kev sim qhia tau hais tias tom qab immersion nyob rau hauv ib tug 3.5% NaCl tov rau 30 hnub, tus nqi txhua xyoo corrosion ntawm TC4 titanium alloy yog tsawg tshaj li 0.005 hli, deb superior rau zoo tib yam stainless hlau. Tshwj xeeb tshaj yog nyob rau hauv marine engineering thiab biomedical teb, nws zoo heev tsis kam mus rau ntsev tsuag corrosion muaj peev xwm ho ncua kev pab cuam lub neej ntawm cov cuab yeej thiab txo nqi txij nkawm.

Lub corrosion kuj ntawm TC4 titanium alloy stems los ntawm nws ib txwm tsim ntom oxide txheej (TiO₂). Cov txheej oxide no, kwv yees li 5-10 nanometers tuab, tuaj yeem kho tus kheej sai sai thaum muaj cov pa oxygen, tiv thaiv kev nkag mus ntawm cov xov xwm corrosive. Aluminium nyob rau hauv lub alloy txhim kho cov txheej txheem oxide, thaum vanadium imparts zoo heev oxidation tsis kam, ua rau TC4 titanium alloy kom muaj tshuaj stability nyob rau hauv acidic thiab alkaline ib puag ncig.

1. Lub tswv yim thiab qhov tseem ceeb ntawm lub peev xwm kub tshwj xeeb

Lub peev xwm kub tshwj xeeb yog lub peev xwm ntawm cov khoom siv los nqus lossis tso cua sov thaum qhov kub hloov pauv, thiab nws tseem ceeb heev rau kev tswj xyuas thermal hauv aerospace, cov khoom siv hluav taws xob, thiab kev siv kub ntawm -. TC4 titanium alloy muaj peev xwm kub ntawm kwv yees li 0.526 J / g·K (ntawm 25 degree). Piv nrog rau cov khoom siv hlau zoo tib yam, TC4 alloy muaj qhov tshwj xeeb kub muaj peev xwm, muab cov peev txheej thermal buffering zoo heev thiab ua kom muaj cua sov zoo.

2. Qhov kub thiab txias nyob ntawm qhov muaj peev xwm kub

Qhov tshwj xeeb kub muaj peev xwm ntawm TC4 titanium alloy nce nrog qhov kub thiab txias, nthuav tawm qhov kub thiab txias raws li cov khoom siv hlau. Ntawm 300 degree, nws qhov tshwj xeeb kub muaj peev xwm nce mus txog kwv yees li 0.587 J / g·K, uas yog qhov tseem ceeb heev rau kev siv kub ntawm -. Cov yam ntxwv no qhia tau hais tias TC4 titanium alloy muaj peev xwm tswj tau cov cua sov kom ruaj khov nyob rau hauv siab - qhov kub thiab txias, tiv thaiv cov khoom siv thermal ntau dhau, yog li txhim kho cov qauv kev nyab xeeb thiab kev pab cuam lub neej.

2.1. Lub peev xwm tshwj xeeb yog dab tsi? Vim li cas thiaj tseem ceeb?

Lub peev xwm tshwj xeeb kub yog qhov muaj peev xwm ntawm cov khoom siv los nqus lossis tso cua sov thaum nws qhov kub hloov pauv, thiab nws yog qhov tseem ceeb tshwj xeeb rau kev tswj xyuas thermal nyob rau hauv siab - qhov kub thiab txias xws li dav hlau thiab cov khoom siv hluav taws xob. Qhov tshwj xeeb kub muaj peev xwm ntawm TC4 titanium alloy yog kwv yees li 0.526 J / g·K (ntawm 25 degree), uas siab dua li cov hlau zoo tib yam. Nws tuaj yeem tiv tshav kub zoo li daim txhuam cev thiab faib cov cua sov kom sib npaug.

2.2 Raws li qhov kub thiab txias, qhov tshwj xeeb kub muaj peev xwm nce.

Qhov tshwj xeeb kub muaj peev xwm ntawm TC4 titanium alloy nce nrog qhov kub thiab txias, cov yam ntxwv ntawm cov hlau. Ntawm 300 degree, nws tuaj yeem ncav cuag 0.587 J / g·K, uas yog qhov muaj txiaj ntsig zoo hauv qhov kub siab - ib puag ncig. Qhov no ua rau muaj kev kub ntxhov ntau dua ntawm qhov kub thiab txias, tiv thaiv cov khoom los ntawm kev tawg vim yog thermal expansion ntau, ua rau nws muaj kev nyab xeeb thiab ruaj khov dua.

TC4 titanium alloy yog dav siv nyob rau hauv qhov tseem ceeb xws li aerospace, marine engineering, thiab biomedicine vim nws zoo heev corrosion kuj thiab muaj peev xwm kub tshwj xeeb. Its corrosion resistance is attributed to the dense oxide film formed on its surface, while its high specific heat capacity ensures stable heat distribution at high temperatures, providing a solid guarantee for the material's safety and reliability.