Titanium daim hlau xa cov kev tiv thaiv corrosion tshwj xeeb thiab muaj zog tshwj xeeb thoob plaws kev ua tshuaj lom neeg, marine engineering, aerospace, thiab kev siv hluav taws xob hydrogen. TOPTITECH's titanium hmoov metallurgy ntxeem tau daim hlau, piv txwv li, tiv taus qhov kub txog li 300℃thaum tuav cov txheej txheem kev ncaj ncees hauv acidic, alkaline, thiab chloride-nplua nuj electrolytes- ua kom pom kev ua tau zoo hauv roj av refining, kev lag luam tshuaj, chaw tsim tshuaj. Txawm li cas los xij, txawm tias titanium-txawm tias nws lub zog tsis muaj zog TiO₂ zaj duab xis- tseem muaj kev cuam tshuam rau cov txheej txheem degradation hauv zos raws li cov xwm txheej tshwj xeeb. Crevice corrosion, hydrogen embrittlement, galling hnav, thiab siab -kub oxidation tuaj yeem cuam tshuam kev pabcuam lub neej ua ntej thaum lub sijhawm ua haujlwm tsis dhau qhov tseem ceeb.
Kab lus no muab cov kws tsim qauv, tus saib xyuas kev saib xyuas, thiab cov khoom siv tshwj xeeb nrog cov tswv yim ua tau zoo thoob plaws plaub qhov tseem ceeb: kev xaiv qib khoom, kev tswj hwm ib puag ncig, kev tsim vaj tsev sab nrauv, thiab cov txheej txheem tu vaj tse. Txhua ntu xa tawm qhov tsis muaj peev xwm thiab cov txheej txheem tseem ceeb rau kev ua kom tiav titanium phaj ntev nyob rau hauv cov nroj tsuag tshuaj, offshore platforms, aerospace cov qauv, thiab cov khoom siv hluav taws xob hloov khoom siv.
1. Kev xaiv cov khoom siv: Qib Optimization rau Aggressive Media
Tsis yog txhua qib titanium ua tau zoo sib npaug hauv kev tawm tsam corrosive. Cov qib ntshiab kev lag luam-TA1 (Qib 1), TA2 (Qib 2), thiab TA3 (Qib 3)- muab kev tiv thaiv zoo heev nyob rau hauv feem ntau oxidizing ib puag ncig, nrog TA2 ua lub neej ntawd kev xaiv vim nws qhov sib npaug ntawm lub zog, formability, thiab weldability. TA1 muab qhov siab tshaj plaws ductility rau kev sib sib zog nqus daim ntaub ntawv, thaum TA3 muab lub zog tensile ntau dua (kwv yees li 450 MPa) ntawm tus nqi ntawm kev txo qis formability.
Txawm li cas los xij, cov titanium ntshiab muaj qhov ua rau muaj qhov tsis zoo hauv qee qhov chaw tshuaj lom neeg. Hydrofluoric acid aggressively tawm tsam titanium ntawm txhua qhov concentration. Txo cov kua qaub-xws li hydrochloric thiab sulfuric acids- tuaj yeem ua rau cov yeeb yaj kiab tsis muaj zog nyob rau hauv qee qhov kub thiab txias -kev sib xyaw ua ke. Cov roj chlorine ntub dej ib puag ncig kuj ua rau muaj kev pheej hmoo rau cov qib txheem.
Rau cov mob hnyav no, palladium- qib alloyed muab kev tiv thaiv zoo tshaj. TA9 (Ti-0.2Pd, Qib 7) thiab TA10 (Ti-0.3Mo-0.8Ni, Qib 12) suav nrog cov hlau tsis zoo ntxiv uas txo qis hydrogen evolution overpotential, hloov lub peev xwm corrosion mus rau hauv cheeb tsam passive txawm tias txo cov kua qaub tawm. TA10 qhia tau hais tias zoo heev crevice corrosion kuj thiab outperforms TA2 nyob rau hauv chloride-muaj thiab txo ib puag ncig. TA9 muaj kev txhim kho corrosion kuj piv rau TA2 thaum tuav cov weldability zoo. Rau cov ntawv thov uas muaj cov tshuaj chlorine saturated nrog ntsev ntawm qhov kub ntawm 120-130℃thiab pH 2, Ti-0.5Pd (Qib 7) muab pov thawj crevice-corrosion kuj.
- Kev xaiv raws tu qauv:
Thaum qhia txog titanium phaj rau ASTM B265- tus txheej txheem tswj kev npog annealed titanium thiab titanium alloy sawb, ntawv, thiab phaj-cov tshuaj muaj pes tsawg leeg uas yuav tsum tau muaj rau nitrogen, carbon, hydrogen, hlau, thiab oxygen yuav tsum raug txheeb xyuas tiv thaiv ib puag ncig kev pabcuam.
