Kev txais yuav sai sai ntawm hydrogen- lub tsheb uas muaj zog tau ua kom muaj kev tshawb nrhiav cov khoom hnyav, ruaj khov rau siab - lub tank siab. Hom III thiab Hom IV cov hlab ntsha sib xyaw ua haujlwm ntawm qhov siab tshaj 700 bar, qhov twg cov hlau nplaum lossis cov thawj coj yuav tsum tawm tsam ob qho tib si kev ntxhov siab thiab kev raug hydrogen ncaj qha. Titanium alloys like Ti-6Al-4V offer an ideal combination of low density and high strength, making them attractive candidates for this demanding application. Txawm li cas los xij, muaj ib qho kev txwv tseem ceeb: atomic hydrogen tuaj yeem nkag mus rau cov qauv hlau thiab ua rau hydrogen embrittlement, ib qho tshwm sim uas hloov pauv qhov titanium coj li cas nyob rau hauv lub voj voog ntau dua. Kev nkag siab txog qhov kev degradation mechanism yog qhov tseem ceeb rau kev tsim lub nkoj zoo.
Qhov tseem ceeb tshaj plaws engineering qhov tshwm sim ntawm hydrogen embrittlement tshwm sim hauv kev ua haujlwm qaug zog. Hydrogen-them nyiaj titanium alloys qhia ntsuas qhov degradation thoob plaws txhua qhov kev qaug zog piv rau huab cua ib puag ncig. Kev qaug zog tawg qhov pib loj hlob poob qis, lub ntsiab lus me me tuaj yeem nthuav tawm hauv kev thauj khoom cyclic. Thaum cov kab nrib pleb pib, qhov tawg ntawm qhov kev loj hlob sai sai hauv hydrogen tej yam kev mob, ua rau luv luv tag nrho lub neej qaug zog. Fractographic tsom xam qhia pom kev hloov pauv hauv kev ua tsis tiav: tawg hauv huab cua ua raws txoj hauv kev transgranular los ntawm alpha colonies, thaum hydrogen- cov qauv raug nthuav tawm nthuav tawm intergranular tawg raws li yav dhau los beta grain ciam teb thiab alpha-beta interfaces. Qhov kev hloov pauv ntawm qhov tawg no piav qhia tias vim li cas hydrogen muaj kev cuam tshuam ntau dua ntawm cov kab mob siab dua thiab suav nrog lub voj voog ntev dua.
Txawm hais tias cov teeb meem no, titanium alloys tseem siv tau rau kev pabcuam hydrogen thaum tswj kom raug. Ti-6Al-4V nrog nplua alpha-beta microstructure muaj kev tiv thaiv zoo dua qub dua li ntxhib lossis beta- cov qauv nplua nuj. Kev kho deg zoo li anodizing lossis thermal oxidation tsim cov txheej txheej titanium dioxide uas txo qis hydrogen ingress. Rau hom IV cov hlab ntsha uas titanium tus thawj coj cuam tshuam nrog cov ntaub ntawv polymer, ua tib zoo tsim cov duab sib khi tiv thaiv hydrogen concentration ntawm cov ntsiab lus tseem ceeb. Welded Cheebtsam xav tau kev saib xyuas tshwj xeeb, vim tias qhov chaw muaj kev cuam tshuam los ntawm tshav kub muaj kev cuam tshuam ntau dua rau kev tsim hydride. Tom qab vuam lub tshuab nqus tsev annealing tshem tawm cov hydrogen yaj thiab rov ua kom puas ntsoog, ncua kev pab cuam lub neej zoo.
Kev loj hlob hydrogen infrastructure ua rau muaj kev xav tau ntawm cov khoom tsim nyog cov qauv. Cov qauv kev sim suav nrog kev ntsuas qeeb qeeb thiab kev qaug zog tawg kev loj hlob kev ntsuam xyuas nyob rau hauv siab -siab hydrogen gas muab cov ntaub ntawv xav tau rau daim ntawv pov thawj lub nkoj nyab xeeb. Titanium alloys yuav tsum tsis txhob raug tso tawm tam sim ntawd rau kev pabcuam hydrogen, tab sis lawv tsis tuaj yeem raug kho raws li poob - hauv kev hloov cov hlau lossis txhuas. Thaum xaiv rau qhov tsim nyog microstructure, tiv thaiv los ntawm cov teeb meem saum npoo, thiab tsim nrog hydrogen- tshwj xeeb kev qaug zog qhov pib hauv siab, titanium alloys ua kom sib zog, ntau compact hydrogen cia systems uas ua rau tag nrho hydrogen kev lag luam.
