Kawm txog Anti Erosion Performance ntawm Titanium Alloy thiab Chromium Txheej rau Shipbuilding
Hauv kev saib xyuas cov nkoj hauv hiav txwv, cov khoom siv yuav tsum tau tiv taus qhov chaw ua haujlwm hnyav, tshwj xeeb tshaj yog cov kev sib tw ntawm kev kub nyhiab, uas txwv tsis pub lawv lub neej ua haujlwm. Tsab ntawv xov xwm no tsom mus rau txoj kev ua haujlwm tshiab los ntawm kev kho cov ntaub ntawv titanium alloy los ntawm cov txheej txheem tshwj xeeb thiab txheej txheej nrog chromium txheej los txhim kho lawv cov kev tiv thaiv corrosion. Los ntawm kev sim laser ablation simulating qhov chaw ua haujlwm ntawm cov nkoj, peb tau delved rau hauv cov teebmeem ntawm kev ua haujlwm ntawm cov khoom ntawm titanium alloys thiab chromium coatings. Nrog rau kev nce qib txuas ntxiv ntawm dej hiav txwv engineering thev naus laus zis, kev ua tau zoo ntawm cov khoom siv nkoj tau dhau los ua nruj. Titanium alloys ua lub luag haujlwm tseem ceeb hauv kev tsim cov nkoj vim lawv cov khoom siv zoo heev thiab kev tiv thaiv corrosion. Txawm li cas los xij, qhov teeb meem ntawm qhov kub thiab txias yaig nyob rau hauv ib puag ncig marine tseem yog ib qho teeb meem loj rau nws daim ntawv thov. Txhawm rau daws qhov kev sib tw no, peb tau txais cov txheej txheem ua haujlwm siab tshaj plaws los kho cov titanium alloys thiab coated nrog cov chromium txheej txhawm rau txhim kho lawv cov kev tiv thaiv kev yaig.
Kev ua thiab cov khoom npaj rau titanium alloy substrate ua: Precision hlau txiav tshuab yog siv los txiav cov titanium alloy raw khoom rau hauv cov qauv-loj (2 cm × 1 cm × 0.5 cm) kuaj. Tom qab ntawd, siv cov ntawv xuab zeb rau polishing, tom qab ntawd txhuam nrog muab tshuaj txhuam kom ua tiav daim iav nyhuv, thiab thaum kawg siv ultrasonic tu kom tshem tawm cov impurities thiab xyuas kom meej qhov smoothness ntawm substrate nto. Chromium txheej ua: Siv cov thev naus laus zis arc ion plating, chromium txheej yog tso rau saum npoo ntawm cov qauv titanium alloy npaj. Los ntawm kev tswj hwm lub tshuab nqus tsev kawm ntawv qib siab (6 × 10 ^ -3 Pa), qhov kub thiab txias (300 degree C), NH3 siab ({10}} Pa), thiab tsis zoo voltage (800 ~ 1000 V), chromium txheej yog xyuas kom zoo li qub thiab ntom, nrog lub sij hawm tso nyiaj tswj tsis pub dhau 10 ~ 20 feeb. Laser ablation thwmsim thiab cov txiaj ntsig kev soj ntsuam tau ua los ntsuas qhov kev tiv thaiv kev ua haujlwm ntawm cov txheej txheem titanium alloys thiab chromium txheej. Peb tsim ib tug series ntawm laser ablation thwmsim. Qhov kev sim siv tus kheej ua tus kheej ntev mem tes dav laser (qauv FLK-TIX6409Hz) los simulate cov txheej txheem ablation ntawm cov khoom hauv nkoj hauv qhov kub thiab txias los ntawm kev kho cov mem tes zog thiab tus lej. Cov txiaj ntsig kev sim tau pom tias qhov tsis tau kho titanium alloy substrate tau nthuav tawm qhov loj thiab sib sib zog nqus ablation pits ntawm qhov chaw hauv qab laser ablation. Txawm hais tias lub hauv paus cheeb tsam yog du, nws tau nrog ntau cov kab nrib pleb, thiab tuab oxide deposits tau tsim nyob rau hauv lub ntug cheeb tsam. Nyob rau hauv sib piv, chrome-plated txheej nyob rau saum npoo ntawm cov txheej txheem titanium alloy exhibits superior anti-ablation kev ua tau zoo nyob rau hauv tib yam kev mob, nrog rau qhov ntiav ablation pits tsawg tawg tawg, thiab txo oxide txuam.
Los ntawm kev tshuaj ntsuam xyuas electron microscopy (SEM) thiab lub zog dispersive spectroscopy (EDAX) tsom xam ntawm microstructure thiab muaj pes tsawg leeg ntawm ablated nto, peb pom tias cov chromium txheej zoo thaiv qhov kev yaig ncaj qha ntawm titanium alloy substrate los ntawm cov pa kub kub, txo qhov tshwm sim. ntawm cov tshuaj tiv thaiv oxidation, thiab yog li txhim kho tag nrho cov khoom siv tiv thaiv ablation ntawm cov khoom. Xaus thiab Kev Pom Zoo: Txoj kev tshawb no tau ua tiav kev txhim kho ablation tsis kam ntawm titanium alloys thiab chromium coatings los ntawm txoj kev ua haujlwm tshiab. Cov txiaj ntsig ntawm kev sim qhia tau hais tias chromium txheej ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv titanium alloy substrate los ntawm qhov kub thiab txias yaig, ua kom lub neej ntev ntawm cov khoom siv nkoj. Kev tshawb fawb yav tom ntej tuaj yeem tshawb nrhiav qhov cuam tshuam ntawm cov txheej txheem sib txawv ntawm cov txheej txheem kev ua haujlwm, nrog rau kev tsim cov khoom siv tiv thaiv txheej txheem ntau dua kom ua tau raws li qhov xav tau ceev rau cov khoom ua tau zoo hauv kev lag luam shipbuilding.
