Nrog nws qhov zoo ntawm lub zog tshwj xeeb thiab kev ua kom sov zoo, Ti-6A1-4V titanium alloy yog dav siv hauv aerospace, petrochemical, zaub mov thiab kev kho mob, suav txog 75% ~ 85% ntawm tag nrho kev siv titanium alloy, dhau los ua trump card alloy hauv titanium alloy. Txawm li cas los xij, qhov kev ua haujlwm tsis zoo xws li tsis tshua muaj zog, tsis zoo hnav tsis kam, thiab tsis zoo kub oxidation kuj zoo heev txwv txoj kev loj hlob ntxiv.Gr.5 titanium alloy.
Muaj ntau yam kev hloov kho saum npoo av rau Gr.5 titanium alloy, suav nrog cov kev hloov kho ib txwm muaj uas sawv cev los ntawm thermochemical oxidation, electroplating, thiab electroless plating, nrog rau cov khoom siv niaj hnub no xws li vapor deposition, ion implantation, micro-arc oxidation, thiab glow nto kho.
(1) Kev kho cua sov
Gr.5 Titanium alloy muaj cov khoom siv tshuaj lom neeg thiab tuaj yeem ua rau muaj ntau yam ntawm qhov sib txawv ntawm qhov kub thiab txias, thiab cov txheej txheem kev kho cua sov xws li oxidation, ammonia thiab carburizing tuaj yeem npaj cov txheej txheem nyuaj ntawm cov hlau los txhim kho qhov chaw tiv thaiv thiab kub tsis kam ntawm titanium alloy. Cov txheej txheem ceramic tau txais los ntawm cov txheej txheem thermochemical kuj tseem tuaj yeem cuam tshuam kev tsim cov kab nrib pleb thiab tiv thaiv kev tawg tawg, kom cov cavitation tsis kam ntawm Gr.5 titanium alloy tuaj yeem txhim kho tau zoo.
Siv lub tshuab nqus tsev nqus ammonia infiltration uas tsis tshua muaj siab, TiN thiab TiAIN txheej tuaj yeem tau txais nrog kev sib xyaw zoo nrog cov substrate, qhov tob ntawm txheej hardened yog 50 ~ 60um, thiab qhov tawv tawv yog 1000-1100HV. Lub TiN / TiN hnav-tiv thaiv txheej rau saum npoo ntawm Gr.5 alloy tuaj yeem txhim kho tau zoo los ntawm plasma ammonia infiltration txoj kev, uas tuaj yeem txhim kho qhov tawv tawv thiab hnav tsis kam ntawm cov hlau. Thaum tsis tshua muaj kub (950 degree), hloov txheej txheej ntawm 3 ~ 15.4um tuaj yeem npaj rau saum npoo ntawm cov hlau rau 5 ~ 40h ntawm boron permeability ntawm Gr.5, thiab hardness yog nce li ntawm 5 npaug piv nrog cov matrix, thiab qhov hnav tsis kam coefficient yog txo mus rau 0.2 ~ 0.3, thiab txhim kho hnav tsis kam.
(2) Vapor deposition
Vapor deposition yog kom condense lub vapor ntawm cov ntaub ntawv uas yuav tsum tau muab tso rau ntawm lub substrate khoom nyob rau hauv lub tshuab nqus tsev tej yam kev mob kom tau ib tug nyias zaj duab xis uas ua tau raws li qhov yuav tsum tau, thiab nyias zaj duab xis tiv thaiv txheej nrog kev ua tau zoo heev yuav tau txais nyob rau saum npoo ntawm Gr.5 alloy los ntawm lub cev vapor deposition (PVD) los yog tshuaj vapor deposition (CVD) thiab derivatization txoj kev ntawm ob txoj kev.
Lub infrared broadband anti-reflection txheej tuaj yeem npaj rau saum npoo ntawm Gr.5 los ntawm cov tshuaj vapor deposition, thiab qhov broadband pass tus nqi ntawm cov alloy nto mus txog 3 ~ 12um, kom cov infrared stealth kev ua tau zoo ntawm Gr.5 alloy tuaj yeem txhim kho. Pob zeb diamond nyias zaj duab xis tuaj yeem npaj rau saum npoo ntawm Gr.5 los ntawm microwave plasma chemical deposition thiab kub filament chemical deposition. Micro pob zeb diamond thiab nano pob zeb diamond films nrog siab purity CH, H2 thiab Ar raws li raw cov ntaub ntawv yuav tau nyob rau saum npoo ntawm Gr.5 alloy los ntawm kub filament tshuaj vapor deposition. Pob zeb diamond-zoo li txheej muaj biocompatibility zoo, zoo heev lub cev thiab tshuaj lom neeg thiab zoo heev hnav tsis kam, uas yog ib qho tseem ceeb heev rau kev siv ntxiv ntawm titanium alloy nyob rau hauv kev kho mob teb.
