Titanium Flange Kev Nyuaj Siab Kev Puas Tsuag
Txawm hais tiastitanium flangesmuaj zoo corrosion tsis kam, lawv kuj tseem yuav muaj kev txhim kho corrosion thiab kev nyuaj siab corrosion hauv qee yam xov xwm ib puag ncig. Ntawm lawv, kev kub ntxhov ntsev kev nyuab siab corrosion yog thawj zaug yuav tsum tau them ntau dua rau. Kev ntsuam xyuas qhia tau hais tias, tshwj tsis yog rau titanium ntshiab, yuav luag txhua cov titanium flanges muaj qhov sib npaug ntawm cov kub ntsev kev nyuaj siab corrosion nyob hauv siab kub, kev ntxhov siab thiab thaj chaw ua haujlwm ntawm halide (xws li NaF, NaCl, NaBr, NaI). Rau cov alloys feem ntau, kub kub ntsev kev nyuaj siab corrosion rhiab kub ntau yuav tsum yog 288-427 ° C. Kev txhim kho xeb yog cuam tshuam nrog cov khoom siv hlau xws li cov sib xyaw ua ke thiab cov keeb kwm kev ua tiav. Lub zog-aluminium thiab high-oxygen alloy thiab cov b-processed lossis b-processed coarse-grained Weir cov qauv muaj ntau rhiab rau kev xeb.
Qhov ua rau cov hlau embrittlement tshwm sim los ntawm kub kub kev nyuaj siab corrosion yog ntseeg tau hais tias cuam tshuam nrog hydrogen embrittlement. Nyob hauv qhov kub thiab txias thiab qhov kev ntxhov siab, lub halide yauv yauv ua kom muaj qhov sib txawv los ua HCl cov roj, thiab HCl txuas ntxiv nrog titanium los tsim hydrogen, uas yog
NaCl kaum H20 — HCl Kaum NaOH
2HCl 10 Ti — TiCl 2 10 2H
Ntxiv rau qhov kub kub ntsev kev nyuaj siab corrosion, titanium flanges muaj qee qhov tsis muaj kev cuam tshuam los ntawm kev nyuaj siab corrosion nyob hauv liab fuming nitric acid, N204, methanol kua uas muaj hydrochloric acid thiab sulfuric acid. Kev daws teeb meem ntawm% NaCl yuav txo qhov kev xeb ntawm lub neej.
Qhov kev ntxhov siab corrosion feem ntawm titanium flanges muaj feem xyuam rau cov khoom sib xyaw ua ke thiab kev kho cua sov. Ua kom cov ntsiab lus ntawm txhuas, tin thiab oxygen txhua yam ua kom nrawm nrawm dhau qhov cuam tshuam ntawm kev nyuaj siab sab qab teb corrosion. Hloov siab, qhov sib ntxiv ntawm b lub zog ruaj khov, xws li txhuas, vanadium, aluminium, thiab nyiaj, rau cov hlau muaj qhov cuam tshuam los ntawm kev daws teeb meem kev ntxhov siab. Titanium flanges tseem muaj ib qho kev nyiam los embrittlement ntawm cov kua hlau. Piv txwv li, kev sib cuag ntawm molten cadmium thiab titanium yuav ua rau cadmium brittleness, thiab mercury muaj cov nyhuv zoo ib yam. Tshaj siab 340 ℃, nyiaj tuaj yeem txhawb kev txhim kho corrosion ntawm alloys xws li TA7.
