PVD-txheej - dab tsi yog nws? Kev siv PVD txheej hauv kev lag luam saib

Cov kev lag luam niaj hnub no muaj ntau yam khoom nyob rau hauv kev ua lag luam, uas nws qee zaum nyuaj to taub. Nyob rau hauv lub zus ntawm Swiss watches feem ntau siv PVD-txheej. Dab tsi yog nws, tsis yog txhua leej txhua tus paub. Tab sis cov lus hais ua kom nrov tau ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv cov khoom siv los ntawm kev ya raws thiab tsis yog.

Tsis tas li ntawd, muaj lwm txoj hau kev los txhim kho txoj kev tsis kam ntawm cov watches thiab lwm yam ntxwv. Qhov no, piv txwv li, kub plating, plating nrog npib tsib xee thiab palladium, sputtering hlau thiab lwm tus neeg. Nws yog teeb meem rau ib tus neeg tsis paub tseeb uas paub txog nws tus kheej, uas yog qhov zoo tshaj plaws thiab cov qauv saum toj no txawv ntawm ib leeg. Cia peb sim paub nws.

PVD-txheej - dab tsi yog nws?

Tsis ntev los no, cov xuaj moos uas muaj cov ncauj lus saum toj no-hais txau nrov. Lub PVD txheej yog dab tsi? Nws yog dab tsi?

Cov kws kho mob pom tau tias nyob rau hauv kev lag luam saib qhov saum toj no hom txheej yog siv hauv lub tshuab nqus tsev. Uas yog, ntawm lub cev ntawm cov khoom, titanium nitride (super-nyuaj) yog siv, dhau uas muaj txheej txheem nyias nyias kub.

Tseem muaj lwm lub npe rau txoj kev tiv thaiv qhov saib nto, xws li lub PVD txheej. Nws yog dab tsi? Qhov no yog txheej txheem txheej txheem uas ua tiav nyob rau hauv kev kub siab nyob hauv ib lub tshuab nqus tsev uas muaj kev sib tsoo nrog cov ions, evaporation-condensation, tshuab raj tshuaj lom.

Nws yog ua tsaug rau cov tshuaj txhauv saum toj no hais tias xws li ib qho dej tso tawm superfine tau txais yam tsis muaj kev txwv.

Daim ntawv tso npe ntawm lub tshuab nqus tsev vacuum

Hom tshuaj txau no yog siv los tsim rau ntawm cov cuab yeej siv, qhov chaw, khoom siv nrog ib txoj hau kev ua haujlwm. Piv txwv, qhov tsim tau ntawm thav plaub ntawm cov iav los yog cov ntaiv nrog PVD-txheej. Cov tshuaj txau no muaj cov nram qab no: corrosion-resistant, hnav-resistant, conductive, yaig-resistant, insulating, barrier, antifriction.

Cov hlau nplaum xws li titanium, tungsten, aluminium, molybdenum, nickel, hlau, tooj liab, chromium, graphite ua raws li cov ntaub ntawv rau deposition. Tsis tas li ntawd, ib qho roj ib qho ua tau qee zaum ntxiv rau txoj kev sib tov. Piv txwv, oxygen, nitrogen los yog acetylene.

Nrog cov txheej txheem hais saum toj no-hais nqus dej, manufacturers tau tsim ultra-thin coatings ntawm 2 angstroms mus rau 2 microns thickness. Cov kws kho mob nco ntsoov tias tom qab thov PVD-txheej ntxiv ua nto ntawm qhov khoom tsis tau.

Qhov txawv ntawm PVD coating thiab gilding yog dab tsi? Txoj kev thov kev tiv thaiv kev tiv thaiv

Ob ntawm cov saum toj no kev tiv thaiv ntawm saib ntawm noo noo yog dav siv nyob rau hauv kev lag luam. Cov kws tshaj lij hais tias qhov sib txawv ntawm qhov txau thiab qhov zoo nkauj yog qhov tseem yog qhov tseem kub ntawm txoj hlua thiab saib ntawv.

Nws yuav tsum tau muab sau tseg tias muaj hlau nrog PVD-txheej - ib nrab lossis tag nrho, daj los yog dawb. Ua tsaug rau qhov txheej txheem no, cov ntaub ntawv saib xyuas tau muaj cov khoom siv zoo heev hauv cov dej thiab cov khoom hnyav. Lub thickness ntawm no sputtering yog nyob rau hauv thaj tsam ntawm 3 μm rau 20 μm.

Cov kws tshaj lij hais tias gilding yog rho tawm ntev lawm. Hauv ib lub xyoos, qhov kub ntawm lub cev ntawm lub cev tsis muaj zog, raws li cov qiv qis, los ntawm 1 micron.

Tseem muaj lwm txoj kev los ntawm kev siv cov coatings tiv thaiv:

• Galvanic txheej nrog palladium (ib tug me admixture ntawm nickel siv), uas muab cov khoom xim dawb lub xim;
• Galvanic txheej nrog palladium thiab xee npais (txawv ntawm yav dhau los txoj hauv kev uas ntau feem pua ntawm xee npe yog siv ntawm no);
• Ionic spraying ntawm hlau (saib rooj plaub dawb, tab sis tsis muaj xim muaj xim);
• Ionic kub deposition (muab cov khoom muag txhua hom ntxoov daj).

Ntawm cov hau kev thermal spraying, cov nram no yog qhov txawv:

• Laser ev taum lwj;
• Electron nqaj ev ev hawj;
• Evaporation los ntawm lub tshuab nqus tsev;
• Magnetron txaws;
• Implantation ntawm ions.

Qhov cuam tshuam rau qhov tsis kam ntawm lub txheej

Qhov ntev ntawm lub txheej tsho kuj nyob ntawm:

1. Cov khaub ncaws ua ntawm tawv tawv. Nws txo lub neej ntawm lub txheej ntawm ob zaug.
2. Acidity ntawm hws ntawm tus neeg, tus tswv ntawm cov saib. Lub cev tuaj yeem pib "corrode" rau ntawm ob tog thiab sab nraub qaum sab.
3. Thickness ntawm txheej nws tus kheej.
4. Ua raws li cov kev cai siv nruj heev.
5. Cov hlau ua kom lo (tsis ua rau adhesion).
6. Cov ntsiab lus ntawm kev siv ntawm cov khoom.

Cov ntsiab lus tseem ceeb ntawm cov PVD txheej

Cov txheej txheem saum toj no muaj cov nram qab no nta:

• Hyperfine (thickness ntawm 1 mus rau 3 μm);
• Yog ua tsis muaj nyob rau hauv qhov muaj pes tsawg leeg ntawm tej yam tsis muaj nuj nqis;
• Muaj kev kawm siab ntawm kev ruaj siab;
• Muaj zog txaus;
• Tiv thaiv cov khoom ntawm khawb.

PVD-txheej sijhawm yog ib txoj hauv kev zoo tshaj plaws los tiv thaiv lawv. Ua tsaug rau lub tshuab nqus tsev vacuuming, cov yam ntxwv ua tau zoo ntawm cov khoom raug nce.