Chemical Vapor Deposition (CVD) txheej ntawm titanium alloys yog ib qho kev kho saum npoo av dav siv los txhim kho cov khoom ntawm titanium alloys.CVD thev naus laus zis ua cov txheej txheem txheej txheej ntawm titanium alloys los ntawm kev hloov cov tshuaj hauv cov pa roj los yog cov roj sib tov rau hauv cov ntaub ntawv ntawm qhov kub thiab txias. tsis tshua muaj siab.
CVD txheej ntawm titanium alloys muaj ntau yam zoo. Ua ntej, CVD txheej tuaj yeem txhim kho qhov hnav thiab corrosion kuj ntawm titanium alloys. Piv txwv li, kev tshawb fawb ntawm tantalum films tso rau saum npoo ntawm titanium alloys tau pom tias tantalum hlau tsis tsuas yog muaj kev tiv thaiv corrosion zoo heev, tab sis kuj pom zoo biocompatibility. Tsis tas li ntawd, CVD txheej txheej txhim kho cov thermal qaug zog tiv thaiv ntawm titanium alloys, uas yog qhov tseem ceeb tshwj xeeb rau cov ntawv thov uas raug kub siab thiab cov neeg kho tshuab kev ntxhov siab.
CVD coatings kuj tau siv dav hauv kev txiav cov cuab yeej. Piv txwv li, cov cuab yeej carbide nrog CVD coatings pom cov nqi qis dua thiab lub neej ntev dua thaum milling titanium alloys ntawm kev kub ceev. Cov txheej txheem txheej txheem no tsis tsuas yog txhim kho cov cuab yeej siv tau ntev, tab sis kuj txo cov nqi tsim khoom thiab kev saib xyuas zaus.
Tsis tas li ntawd, CVD thev naus laus zis tau siv rau hauv thaj chaw biomedical. Piv txwv li, coatings tso rau saum npoo ntawm titanium alloys los ntawm CVD technology yuav siv tau nyob rau hauv lub tsim ntawm biomedical implants; cov coatings no tsis tsuas yog txhim kho biocompatibility ntawm cov khoom, tab sis kuj txhim khu nws hnav thiab corrosion kuj.
CVD txheej tshuab rau titanium alloys tau txhim kho kev ua tau zoo ntawm titanium alloys hauv aerospace, biomedical thiab industrial processing applications los ntawm kev muab kev hnav zoo heev, tiv thaiv corrosion thiab thermal stability.
Cov txheej txheem tshuaj lom neeg
Cov txheej txheem tshuaj lom neeg tshwj xeeb rau CVD txheej ntawm titanium alloys tuaj yeem pom tau los ntawm cov tshuaj vapor deposition (CVD), txheej txheem zaj duab xis nyias uas tso cov yeeb yaj kiab nyias nyias rau saum npoo ntawm lub substrate los ntawm kev siv roj-theem tshuaj tiv thaiv. Tshwj xeeb, kev npaj ntawm CVD txheej ntawm titanium alloys feem ntau suav nrog cov kauj ruam hauv qab no:
1. Precursor xaiv: xaiv qhov tsim nyog titanium precursor, xws li titanium chloride (TiCl4).
2. Gas-theem precursor introduction: precursor gases yog nkag mus rau hauv cov tshuaj tiv thaiv chamber, thiab cov gases decompose nyob rau hauv high kub.
3. Cov tshuaj tiv thaiv saum npoo av: cov roj av ua ntej ua rau cov tshuaj lom neeg ntawm cov substrate los tsim titanium atoms lossis molecules.
4. Zaj duab xis deposition: Titanium atoms los yog molecules yog tso rau saum npoo ntawm lub substrate los ua ib tug niaj hnub zaj duab xis ntawm titanium alloy.
Biomedical applications
CVD txheej ntawm titanium alloy nyob rau hauv biomedical teb daim ntawv thov cov ntaub ntawv tsuas yog tsom rau ntawm qhov chaw hloov kho ntawm cov nroj tsuag los txhim kho lawv biocompatibility, hnav tsis kam thiab corrosion kuj.
1. Kev hloov kho ntawm cov khoom cog: Titanium alloy CVD coatings yog siv dav rau kev hloov kho ntawm cov cog cog los txhim kho lawv cov biocompatibility thiab txhua yam khoom. Piv txwv li, tantalum zaj duab xis txheej tso rau ntawm Ti6Al4V alloy substrate los ntawm CVI / CVD thev naus laus zis tuaj yeem txhim kho qhov hnav thiab tiv thaiv corrosion ntawm txheej.
2. Kev txhawb nqa ntawm tes: Kev tso cov coatings xws li TaC, TaCN thiab TaN rau saum npoo ntawm titanium alloys, cov txheej txheem no tsis tsuas yog txhim kho corrosion kuj ntawm cov ntaub ntawv, tab sis kuj txhawb cov adhesion thaum ntxov thiab proliferation ntawm osteoblasts, uas pab txhawb kev tsim dua tshiab. thiab kho cov pob txha.
3. Cov khoom siv sib koom ua ke: Titanium alloy hard coatings (piv txwv li, CVD thiab PVD txheej) yog siv rau hauv cov khoom sib koom ua ke xws li femoral taub hau los txhim kho lawv cov kev sib txhuam thiab yog li txuas ntxiv kev pab cuam lub neej ntawm cov cog cog.
4. Titanium Nitride Coatings: Titanium Nitride coatings yog npaj los ntawm CVD txoj kev thiab tsuas yog siv los txhim kho corrosion kuj thiab biocompatibility ntawm titanium implants.
