Dab tsi titanium qib 2 khoom -} kev paub

1. Titanium Qib 2 yog dab tsi?

Titanium qib 2 yog aCov neeg lag luam ntshiab titanium (cp ti)Qib -} ib qho ntawm feem ntau siv cov ntaub ntawv titaniumed. Tsis zoo li titanium alloys (piv txwv li, qib 5 TI-6AL-4V), nws muaj tsis muaj kev cia siab ntxiv alloy lossis vanadium) thiab muaj ntau dua 99% ntshiab titanium. Nws cov khoom lag luam feem ntau zoo li tus qauv los ntawm trac impurities (piv txwv li, oxygen, carbon, carbon) uas yog nruj me ntsis tswj tau kom sib npaug thiab cov txheej txheem.

Raws li "kev lag luam ntshiab" qib, nws nyob hauv nruab nrab hauv tsev ntawm CP Titanium tsev neeg (uas muaj Qeb 1, 2, 3, thiab 4). Piv rau qis -}}}}}} awnal 1, nrog tsawg dua oxygen) thaum khaws cov dauv zoo dua thiab muaj peev xwm. Piv rau siab dua -}} qib cp titanium (piv txwv li qib 3), nws muab cov ductility zoo dua thiab weldability ntawm tus nqi me ntsis lub zog.

Cov yam ntxwv tseem ceeb ntawm qib 2 titanium suav nrog:

Ductility siab thiab muaj kev kho kom zoo (yooj yim khoov, dov, lossis kos rau hauv cov nplooj ntawv nyias / xaim).

Zoo heev corrosion tsis kam nyob rau hauv me - {{1} {}, dej hiav txwv, dilute acids).

Zoo weldability nrog minimal post - Weld lub zog ploj.

Biocompatibility (muaj kev nyab xeeb rau kev siv sib cuag nrog tib neeg cov ntaub so ntswg, ua rau nws haum rau cov khoom siv kho mob).

Cov cwj pwm no ua rau nws muaj ntau yam khoom rau cov ntawv thov uas muaj zog, thiab tus nqi {{} ua tau zoo.

2. Dab tsi yog lub npe ntawm qib 2 titanium?

Titanium Qib 2 muaj ntau lub npe, xav txog nws cov kev faib tawm, kev coj dawb huv, thiab kev siv kev lag luam:

Thawj / Txuj Ci Lub Npe: Titanium Qib 2(Qhov kev tsim paub thoob ntiaj teb tshaj plaws, siv hauv cov qauv zoo li ASTM International, ISO, thiab Din).

Purity -} raws npe: Cov neeg lag luam ntshiab titanium qib 2 (CP TI qib 2)Cov. Lub npe no hais txog nws cov xwm txheej uas tsis muaj qhov tseeb, siab- purity titanium qib (tsis yog alloy) thiab txawv ntawm cov qib kawm (piv txwv li, qib 5).

Kev lag luam -} Tshwj xeeb nicknames: Hauv qee cov haujlwm (piv txwv li, kev ua haujlwm siv tshuaj lossis kev kho mob), nws yuav raug xa mus rau raws li "CP qib 2 CP TI" rau brevity.

Tshwj xeeb, nws tsis muaj lub npe tshwj xeeb "lossis daim ntawv lo cim (tsis zoo li qee cov alloys tshwj xeeb). Nws cov npe yog sib xws thoob ntiaj teb cov qauv los xyuas kom meej meej hauv cov khoom xaiv thiab kev qhia tshwj xeeb.

3. Puas yog qib 2 titanium zoo zoo?

Yog lawm, Titanium Qib 2 yog suav tias yoghigh -} ZooRau nws cov ntawv thov npaj, nrog qhov zoo txhais tau los ntawm nws li kev sib xws, muaj kev cia siab, thiab cov qauv kev ua haujlwm nrog cov qauv kev lag luam. Nws qhov zoo yog siv tau los ntawm cov hauv qab no:

a. Ua raws li cov qauv nruj

Qeb 2 titanium yog tsim tawm thiab kuaj kom tau raws li cov qauv kev nyuaj siab thoob ntiaj teb, uas kom ntseeg tau tias cov khoom muaj pes tsawg leeg, cov neeg kho tshuab, thiab kev ua tau zoo. Cov Qauv Tseem Ceeb suav nrog:

ASTM B265: Cov lus qhia tshwj xeeb rau Titanium thiab titanium alloy ntawv, phaj, thiab sawb (siv thoob ntiaj teb rau cov khoom tiaj).

ASTM B348: Kev qhia tshwj xeeb rau Titanium thiab titanium alloy tuav thiab billets.

ISO 5832-2: International standard for titanium and titanium alloys for surgical implants (specifically for medical-grade Grade 2).

Cov qauv kev cai no yuam kev ntawm trac impurities (piv txwv li, tsawg kawg nkaus lossis sib npaug ntawm cov qib 2 Titanium ua yeeb yam raws li tau txais.

b. Kev ua tau zoo ib yam rau kev siv cov teeb meem

Qeb 2 titanium qhov zoo yog xav ntxiv nyob rau hauv nws lub peev xwm kom ntseeg tau raws li qhov xav tau ntawm nws cov ntawv thov tseem ceeb:

Kev Lag Luam: Nws tiv taus corrosion hauv dilute acids thiab se dej hiav txwv, tswj cov txheej txheem kev ntseeg siab tshaj xyoo lawm, kav dej, thiab li qub.

Cov Khoom Siv Kho Mob: Nws biocompatibility (tsis muaj tshuaj lom cov tshuaj tiv thaiv nrog tib neeg cov ntaub so ntswg) thiab purity ntsib nws muaj kev nyab xeeb rau cov khoom siv kho hniav thiab kev phais cov cuab yeej.

Cov Neeg Siv Khoom: Nws muaj cov qauv ua qauv raws li kev ua kom pom kev ua ntej lossis cov iav tsom iav, nrog tsis muaj kev sib txawv hauv qhov ua tiav lossis kav ntev.

c. Txwv (tsis yog "ib - loj {{2} {}- txhua" txhua yam "zoo)

Thaum siab -}} Zoo rau nws lub hom phiaj, qib 2} - zoo (piv txwv li, aerospace cav qhov chaw). Nws qhov zoo yog daim ntawv thov -} {}}}}}} Enlection {zoo li qib 5 yog qhov haum zoo dua.

4. Puas yog Titanium Qib 2 xeb?

Tsis yog, Titanium qib 2tsis muaj xeb-} Ib qho txiaj ntsig tseem ceeb uas tau teeb tsa nws sib nrug ntawm cov hlau thiab ntau lwm yam hlau. Txhawm rau kom nkag siab yog vim li cas, nws yog thawj qhov tseem ceeb los txhais "xeb": xeb yog hais txog kev tsim ntawm cov hlau oxes) ntawm cov hlau) thaum raug cov pa oxygen thiab ya raws. Txij li thaum qib 2 Titanium muaj tsis muaj hlau, nws tsis tuaj yeem tsim cov hlau oxides {}}} thiab yog li tsis muaj xeb.

Hloov chaw xeb, qib 2 titanium ua ibTiv thaiv Oxide Txheejuas tiv thaiv corrosion:

Passivation: Thaum raug huab cua lossis dej, qib 2 titanium tam sim ntawd reacts los ua ib txheej nyias (2-5 nanometers), ntom txheej ntawm titanium dioxide (tio₂) ntawm nws nto. Cov txheej no yog inert (chemically tsis sib xws) thiab impmeable rau oxygen, dej, thiab feem ntau corrosive ions.

Tus kheej -}} kho: Yog tias txheej oxide txheej khawb lossis tawg (piv txwv li, nws tam sim ntawd hloov oxygen lossis dej noo- recovering kev tiv thaiv tsis muaj kev kho ntxiv.

Muaj kev zam: thaum corrosion (tsis xeb) yuav tshwm sim

Thaum qib 2 titanium tsis xeb, nws tuaj yeem paubCorrosion nyob rau hauv huab, siab heev ib puag ncig(Txawm tias qhov no tsis tshua muaj thiab sib txawv ntawm xeb).

Concentrated muaj zog acids: Hot, concentrated acids (e.g., nitric acid >60% ntawm qhov kub siab) tuaj yeem yaj cov txheej tio₂, ua rau kom nto etching lossis pitting.

Molten Salts lossis Alkalis: Thaum kub heev (saum toj 600 degree), molten salts (xws li sodium chloride) lossis muaj zog, molten sodium hydroxide) yuav tawg cov txheej oxide.

Hmoov av -} muaj ib puag ncig: Gaseous fluorine lossis hydrofluoric acid (HF) tuaj yeem hnov mob nrog titanium los ua volatile los ua cov tshuaj tsw qab, ua rau muaj kev xeb ceev.

Nyob rau hauv ib puag ncig ib puag ncig (piv txwv li, nag, dej noo, li cas} dawb thiab corrosion {{tiv taus rau ntau caum xyoo.

Dab tsi yog Titanium Qib 2 Cov Khoom Siv