Kawm Txog Ablation Resistance Ntawm Marine Titanium Alloys Thiab Chromium Coatings Tom qab ua tiav

Hauv kev tsim thiab tu cov nkoj hauv hiav txwv, cov khoom siv hauv hiav txwv tau raug rau qhov chaw ua haujlwm huab cua, tshwj xeeb tshaj yog cov kev sib tw ntawm qhov kub thiab txias ablation, uas txwv tsis pub lawv lub neej ua haujlwm. Daim ntawv no tsom mus rau txoj kev ua haujlwm tshiab los ntawm kev txhim kho ablation tsis kam ntawm titanium alloy cov ntaub ntawv los ntawm kev kho lawv nrog chromium txheej ntawm lawv qhov chaw los ntawm cov txheej txheem tshwj xeeb. Los ntawm kev sim laser ablation uas simulate qhov chaw ua haujlwm ntawm lub nkoj, peb muab kev nkag siab txog qhov cuam tshuam ntawm qhov kev kho no ntawm cov khoom ntawm titanium alloys thiab chrome coatings.
Nrog rau kev nce qib txuas ntxiv ntawm marine engineering thev naus laus zis, kev ua tau zoo ntawm cov khoom siv nkoj tau dhau los ua nruj. Titanium alloy, nrog nws cov khoom siv zoo heev thiab kev tiv thaiv corrosion, tuav txoj haujlwm tseem ceeb hauv kev tsim nkoj. Txawm li cas los xij, qhov kub-kub ablation nyob rau hauv ib puag ncig marine tseem yog ib qho kev sib tw loj uas txwv tsis pub nws daim ntawv thov. Txhawm rau ua kom tau raws li qhov kev sib tw no, peb tau txais kev siv thev naus laus zis thev naus laus zis los kho titanium alloys nrog chromium plating, nrog rau kev saib xyuas txhawm rau txhim kho lawv cov ablative corrosion kuj.

Txoj kev ua thiab kev npaj cov khoom
Kev ua haujlwm ntawm titanium alloy substrate: titanium alloy raw khoom raug txiav mus rau hauv cov qauv ntawm cov qauv loj (2 cm × 1 cm × 0.5 cm) siv precision hlau txiav tshuab. Tom qab ntawd, 1500 grit sandpaper yog siv rau polishing, ces abrasive muab tshuaj txhuam yog siv los polish rau ib daim iav nyhuv, thiab thaum kawg ultrasonic tu yog siv los tshem tawm impurities nto los xyuas kom meej lub nto tiav ntawm lub substrate.
Chromium Txheej Txheej: Chromium txheej tau muab tso rau saum npoo ntawm cov qauv titanium alloy npaj siv cov thev naus laus zis arc ion plating. Los ntawm kev tswj hwm lub tshuab nqus tsev (6 × 10 ^ -3 Pa), qhov kub thiab txias (300 degree), NH3 siab (2 ~ 3 Pa) thiab tsis zoo voltage (800 ~ 1000 V), cov txheej chromium tau ua kom zoo ib yam. thiab ntom, thiab lub sij hawm deposition yog tswj ntawm 10 ~ 20 feeb.
Laser ablation sim thiab soj ntsuam cov txiaj ntsig
Ib qho kev sim ntawm laser ablation tau tsim los ntsuas qhov ablation tsis kam ntawm cov txheej txheem titanium alloy thiab chromium txheej. Cov kev sim siv ib lub tsev ntev mem tes dav laser (qauv FLK-TIX6409Hz) simulate cov txheej txheem ablation ntawm nkoj qhov chaw nyob rau hauv qhov kub thiab txias ib puag ncig los ntawm kev kho cov mem tes zog thiab pes tsawg pulses.
Cov txiaj ntsig kev sim qhia tau hais tias qhov tsis tau kho titanium alloy substrate muaj qhov loj thiab sib sib zog nqus ablation craters rau ntawm qhov chaw nyob rau hauv laser ablation, nrog ntau cov kab nrib pleb nyob rau hauv qhov chaw txawm tias du, thiab ib tug tuab oxide txuam nyob rau hauv lub ntug cheeb tsam. Nyob rau hauv sib piv, cov chromium-plated txheej nyob rau saum npoo ntawm cov txheej txheem titanium alloy pom superior ablation kuj nyob rau hauv tib yam kev mob, nrog ntiav ablation pits thiab tsawg kab nrib pleb, thiab ho tsis tshua muaj oxide buildup.
Los ntawm kev tshuaj ntsuam xyuas electron microscopy (SEM) thiab lub zog dispersive spectroscopy (EDAX) micro-morphology thiab kev tshuaj ntsuam xyuas ntawm qhov chaw ablated, peb pom tias cov chromium txheej tau zoo thaiv qhov kev yaig ncaj qha ntawm cov pa kub kub ntawm titanium alloy substrate thiab txo qhov tshwm sim. ntawm oxidation cov tshuaj tiv thaiv, yog li txhim kho tag nrho ablation-resistant zog ntawm cov khoom.
Xaus thiab Outlook
Hauv txoj kev tshawb no, ablation tsis kam ntawm titanium alloys thiab chromium coatings tau ua tiav zoo los ntawm txoj kev ua haujlwm tshiab. Cov txiaj ntsig kev sim qhia tau hais tias cov txheej txheem chromium plays lub luag haujlwm tseem ceeb hauv kev tiv thaiv titanium alloy substrate los ntawm qhov kub thiab txias ablation, uas cuam tshuam rau lub neej kev pab cuam ntawm lub nkoj. Cov kev tshawb fawb yav tom ntej tuaj yeem tshawb nrhiav qhov cuam tshuam ntawm kev ua haujlwm sib txawv ntawm cov txheej txheem kev ua haujlwm, nrog rau kev txhim kho cov khoom siv tiv thaiv txheej txheem ntau dua, txhawm rau ua kom tau raws li qhov xav tau ceev rau qhov ua tau zoo hauv kev ua haujlwm ntawm nkoj.