1. Yuav Titanium xeb hauv dej?
Tsis yog, titanium tsis xeb hauv dej. Rust yog tshwj xeeb oxidation ntawm hlau (sib sau hlau oxides), thiab titanium yog cov hlau tsis muaj xeb (nws tsis muaj hlau), yog li nws tsis tuaj yeem yauv ua xeb hauv kev nkag siab.
Thaum Titanium raug rau dej (lossis huab cua), nws tsis nyiam nrog oxygen los ua ib txheej nyias, tiv thaiv kev tiv thaiv ntawm cov titanium dioxide (tio₂) ntawm nws nto. Qhov no oxide txheej yog inert, nruj nreem rau cov hlau, thiab kho tus kheej-yog tias kos, nws hloov oxygen sai sai. Cov txheej no tiv thaiv ntxiv oxidation lossis degradation, txawm nyob rau hauv lub sijhawm sib chronged nrog dej (tshiab lossis ntsev).
Hauv kev sib piv, cov hlau muaj hlau (zoo li cov hlau hlau) xeb hauv dej vim tias cov hlau oxides thiab flake tseg, ua rau muaj ntau hlau rau corrosion. Titanium qhov tsis kam rau cov txheej txheem no ua rau nws zoo rau cov ntawv thov hauv qab, xws li cov khoom siv hluav taws xob hauv marine lossis cov khoom siv submissible.
2. Puas yog ntsev dej puas puas tsuaj titanium?
Cov dej ntsev kom haum rau ntau cov hlau, tab sis titanium yog tshwj xeeb tiv taus kev puas tsuaj los ntawm dej ntsev. Qhov tsis kam ntawm nws cov cim oxide tshwj xeeb:
Thaum titanium yog raus rau hauv ntsev dej, nws cov kev tiv thaiv Ti₂ txheej tseem nyob ruaj khov thiab corrosive rau hauv ntsev dej). Tsis zoo li cov hlau stainless, uas tuaj yeem raug kev txom nyem pitting lossis crevice corrosion (tshwj xeeb tshaj yog cov roj oxide qis dua 304), Titanium Oxide txheej tsis tawg raws li cov xwm txheej no.
Qhov tsis dhau kev tuav txawm nyob rau hauv ib puag ncig ua tub rog ib puag ncig, xws li kev tso tsheb hlau luam yeeb, offshore qauv, lossis hauv qab dej hauv qab. Titanium alloys zoo li TI-6AL-4V tau siv dav hauv cov txiv neej ua lag luam, thiab desalination nroj tsuag tsis muaj dej ntsev yam tsis muaj kev xeb, pitting, lossis kev tsis sib haum xeeb.
Thaum muaj mob tsawg dua, xws li kub heev (piv txwv li kub heev ua ke nrog ntau yam kev tawm tsam) tej zaum yuav luag txhua yam kev tawm tsam, ntsev tsis puas tsuaj titanium.
3. Ntawm dab tsi kub yog titanium yaj?
Lub ntsiab lus melting ntawm titanium nyob ntawm nws txoj kev coj dawb huv thiab seb nws yog ib qho xwb.
Kev lag luam ntshiab titanium(tsis muaj zog) muaj qhov muag me me ntawm kwv yees li1,668℃(3,034℃f)Cov. Qhov no melting point ua rau nws haum rau kev siv hluav taws kub (xws li nws tau rov qab lub zog kub (txawm hais tias nws yuav oxidize saum toj no ~ 600℃yog tsis muaj kev tiv thaiv).
Titanium alloys(piv txwv li, ti-6v, feem ntau cov alloy) muaj me ntsis qis melting cov ntsiab lus tshaj li ntshiab titanium, feem ntau xws li los ntawm1,600℃rau 1,660℃(2,912℃f rau 3,020℃f)Cov. Qhov kev sib ntxiv ntawm cov ntsiab lus zoo li txhuas, lossis Molybdenum hloov kho cov neeg siv tshuab (piv txwv li lub zog) tab sis margentally txo lub taw tes melting piv rau cov ntshiab titanium.
Qhov no zoo melting point yog siab dua li ntawm ntau cov hlau (piv txwv li cov hlau me me ntawm 10,370 degrts), pab txhawb rau Titanium tus nqi hluav taws xob hauv tshav kub.
