Nyob rau hauv lub realm ntawm maritime engineering thiab txij nkawm, lub durability ntawm marine Cheebtsam ntsib ib tug formidable kev sib tw nyob rau hauv daim ntawv ntawm high-temperature yaig. Qhov teeb meem no cuam tshuam qhov kev ua haujlwm ntawm lub nkoj nkoj. Hais txog qhov kev txhawj xeeb no lub taub hau, cov txheej txheem ua haujlwm tshiab tau tshawb xyuas los txhim kho kev yaig tsis kam ntawm marine-qib titanium alloys. Lub ntsiab lus tseem ceeb ntawm txoj kev tshawb no yog nyob ib ncig ntawm cov txheej txheem kev ua haujlwm sib txawv uas siv rau titanium alloys, ua ke nrog kev tso tawm ntawm chromium txheej ntawm lawv qhov chaw los txhawb lawv cov kev tiv thaiv thermal yaig.
Kev nce qib tsis tu ncua ntawm marine engineering technologies tau nthuav dav qhov kev xav tau ntawm cov khoom siv nkoj. Titanium alloys, muaj npe nrov rau lawv cov khoom tshwj xeeb thiab kev tiv thaiv corrosion, tuav lub luag haujlwm tseem ceeb hauv kev tsim tub rog. Txawm li cas los xij, qhov kev sib tw tsis tu ncua ntawm qhov kub-kub yaig nyob rau hauv ib puag ncig marine tseem cuam tshuam rau lawv cov ntawv thov dav. Txhawm rau tiv thaiv qhov teeb meem no, kev ua tiav qib siab tau ua haujlwm rau saum npoo kho titanium alloys, ua raws li kev siv cov chromium coatings, tsom rau augmenting lawv cov peev xwm tiv taus yaig.
Txheej txheem txheej txheem thiab kev npaj cov khoom
Chromium Txheej Txheej: Cov txheej txheem qib siab arc ion plating yog siv los tso cov chromium txheej rau ntawm cov qauv titanium alloy npaj. Los ntawm kev tswj xyuas qhov tsis zoo xws li lub tshuab nqus tsev (6 × 10^-3 Pa), qhov kub (300 degree), NH3 siab (23 Pa), thiab tsis zoo voltage (8001000 V), chromium coatings yog uniformly ntom, nrog lub sij hawm deposition li ntawm 10 mus rau 20 feeb.
Laser Erosion Experimentation thiab Kev Tshawb Fawb Txog Kev Tshawb Fawb
Titanium Alloy Substrate Processing: Precision hlau txiav cov tswv yim yog siv los ntu cov ntaub ntawv nyoos titanium rau hauv cov qauv ntsuas ntsuas 2 cm × 1 cm × 0.5 cm. Tom qab ntawd, cov txheej txheem polishing siv 1500-grit sandpaper yog siv, ua tiav hauv daim iav zoo li ua tiav los ntawm polishing compounds. Ultrasonic tu yog ua hauj lwm los mus tshem tawm impurities nto, kom lub substrate nto yog impeccably du.
Chromium Txheej Txheej: Cov txheej txheem qib siab arc ion plating yog siv los tso cov chromium txheej rau ntawm cov qauv titanium alloy npaj. Los ntawm kev tswj xyuas qhov tsis zoo xws li lub tshuab nqus tsev (6 × 10^-3 Pa), qhov kub (300 degree), NH3 siab (23 Pa), thiab tsis zoo voltage (8001000 V), chromium coatings yog uniformly ntom, nrog lub sij hawm deposition li ntawm 10 mus rau 20 feeb.
Laser Erosion Experimentation thiab Kev Tshawb Fawb Txog Kev Tshawb Fawb
Txhawm rau ntsuas qhov kev yaig tsis kam ntawm cov txheej txheem titanium alloys thiab chromium coatings, series ntawm laser yaig thwmsim tau tsim. Kev siv lub tshuab ua kom ntev-mem tes dav laser ( qauv FLK-TIX6409Hz) thiab kho lub zog pulse thiab zaus, cov kev sim simulate cov txheej txheem yaig uas tau ntsib los ntawm cov khoom hauv nkoj nyob rau hauv qhov kub thiab txias. Cov txiaj ntsig tau qhia tias tsis tau kho titanium alloy substrates pom qhov tob tob thiab dav yaig nyob rau hauv laser yaig, nrog cov cheeb tsam du tab sis tawg-laden hauv nruab nrab, thiab cov oxide tuab ntawm cov npoo. Nyob rau hauv sib piv, titanium alloys nrog chromium coatings qhia superior erosion kuj nyob rau hauv zoo tib yam tej yam kev mob, showcasing ntiav erosion pits, txo cov kab nrib pleb, thiab oxidized tsuj tsawg zuj zus.
Microscopic morphology thiab compositional analyses ntawm eroded nto ua los ntawm scanning electron microscopy (SEM) thiab lub zog-dispersive X-ray spectroscopy (EDAX) unveil uas chromium coatings zoo tiv thaiv lub titanium alloy substrates ntawm ncaj qha oxidative yaig los ntawm high-temperature oxygen, yog li curb. oxidation cov tshuaj tiv thaiv thiab txhim kho tag nrho cov erosion tsis kam ntawm cov ntaub ntawv.
Cov txheej txheem ua haujlwm tshiab tau siv rau titanium alloys, ua ke nrog cov txheej txheem chromium, nthuav qhia txoj hauv kev zoo los txhawb cov khoom siv hauv hiav txwv tiv thaiv qhov tseeb ntawm qhov kub-kub yaig nyob rau hauv maritime ib puag ncig. Qhov kev tshawb fawb no tsis tsuas yog tso lub teeb pom kev ntawm lub luag haujlwm tseem ceeb ntawm kev kho saum npoo hauv kev txhim kho cov khoom siv tau ntev, tab sis tseem qhia txog qhov tseem ceeb ntawm cov kev daws teeb meem hauv kev thawb cov ciam teb ntawm marine engineering resilience.
