Titanium flange kub ntsev kev nyuaj siab corrosion

Titanium flange txawm zoo corrosion kuj, tab sis nyob rau hauv ib co ib puag ncig xov xwm tej zaum yuav tseem yuav raug corrosion thiab kev nyuaj siab corrosion, uas yog ntau mloog yog ua ntej ntawm tag nrho cov kub ntsev kev nyuaj siab corrosion. Cov kev ntsuam xyuas qhia tau hais tias, ntxiv rau cov ntshiab titanium, yuav luag tag nrho cov titanium flanges nyob rau hauv qhov kub thiab txias, kev nyuaj siab thiab muaj halides (xws li NaF, NaCl, NaBr, NaI) nyob rau hauv lub chaw ua hauj lwm, muaj tib theem ntawm kub ntsev kev nyuaj siab corrosion nyiam. . Rau feem ntau cov alloys, kub ntsev kev nyuaj siab corrosion rhiab kub ntau yam yuav tsum yog 288-427 degree . Corrosion nyiam thiab alloy muaj pes tsawg leeg, ua keeb kwm thiab lwm yam metallurgical yam, siab alumina thiab siab oxygen alloy thiab b ua los yog b kev kho mob ntawm coarse siv lead ua Weiss lub koom haum yog rhiab heev rau kev nyuaj siab corrosion.

Kub ntsev kev nyuaj siab corrosion tshwm sim los ntawm hlau embrittlement ntseeg tau hais tias muaj feem xyuam rau hydrogen embrittlement ntawm qhov kub thiab txias, halide hydrolysis tshwm sim, generating HCl roj, HCl ntxiv kev txiav txim nrog titanium, generating hydrogen, namely
NaCl ten H20-HCl ten NaOH
2HCl ten Ti-TiCl2 ten 2H
Ntxiv rau qhov kub ntsev kev nyuaj siab corrosion, titanium flange muaj liab fuming nitric acid, N204, muaj hydrochloric acid, sulfuric acid nyob rau hauv methanol tov muaj ib tug tej yam kev nyuaj siab corrosion nyiam, thaum nrog ntse notch specimens rau kev nyuaj siab corrosion test, muaj 3.5% NaCl. aqueous tov tej zaum yuav txo tau lub neej ntawm corrosion.

Titanium flange kev nyuaj siab corrosion nyiam thiab alloy muaj pes tsawg leeg thiab kev kho cua sov muaj feem xyuam rau nce cov ntsiab lus ntawm txhuas, tin, oxygen yog metallurgical accelerated kev nyuaj siab sab qab teb corrosion. Ntawm qhov tsis sib xws, cov alloy ntxiv b stabilizing cov ntsiab lus, xws li txhuas, vanadium, pab pawg, nyiaj, thiab lwm yam muaj cov nyhuv ntawm alleviating corrosion corrosion. Titanium flange tseem muaj cov kua hlau embrittlement nyiam xws li molten cadmium thiab titanium tiv tauj yuav ua rau cadmium brittle, mercury tawm ntawm cov nyhuv zoo sib xws. Tshaj 340 degree, nyiaj tuaj yeem txhawb TA7 thiab lwm cov hlau nplaum corrosion.