Txoj kev loj hlob Trend Of PVD Txheej

Tam sim no txoj kev loj hlob ntawm PVD txheej txheem nyob rau hauv lub ntiaj teb no muaj cov nram qab no plaub loj tiam sis.

1. Cov txheej txheem txheej txheem yuav muaj ntau ntau thiab sib sau

Thawj tiam ntawm PVD coatings mas TiN. Nyob rau hauv no, TiC, TiCN, ZrN, CrN, WC thiab lwm yam hlau tib coatings raug tsim. Nrog rau cov kev tsim kho tshuab PVD ntxiv, cov tshuab ua kom muaj ntau yam hlau ntau xws li Tiain thiab TiAICN tau tsim ib qho tom qab. Kev hnav kev tiv thaiv thiab kev ua kom tawv nqaij ntawm cov coatings no ntau dua li cov hlau coatings, thiab lawv tuaj yeem siv rau kev txiav siab dua qhov teeb meem xws li hauj lwm (txog 150m / min). Tom qab ntawd, tib neeg xav tias yuav muab ntau hom coatings rau ntawm qhov cuab yeej los siv cov kev zoo ntawm ntau coatings, xws li TiN + TiCN + TiN, TiN + TiAlN, TiAIN + WC / C, thiab lwm yam.

Nyob rau hauv xyoo tsis ntev los no, PVD txheej tshuab tau tuav lwm kauj ruam rau pem suab. Muaj ntau lub tuam txhab tau tsim thiab siv cov txheej txheem pulsed yees, xws li P3E (Pulse Enhanced Electron Emission) los ntawm Balzers, Switzerland. Thiab HIP_ (Siab Ion Pulse) tshuab ntawm Cemecon, lub teb chaws Yelemees. Tag nrho ob qho ntawm cov tshiab technologies siv pulsed electrons mus qhib lub hom phiaj evaporation. Raws li tus txheej txheem muaj peev xwm ua hauj lwm hauv cov pa oxygen, yog li theoretically, yuav luag txhua cov pa oxide (xws li, A12O3, ZrO2, Cr2O3, Ta2O5, thiab lwm yam.) Thiab lawv cov txheej txheem coatings tuaj yeem tso los ntawm cov txheej txheem no.

2. Daim ntawv thov kev lag luam ntawm cov txheej txheem tsim muaj ntau dua

Yuav kom ua tau raws li cov kev cai thov txawv, qhov tsim thiab kev loj hlob ntawm coatings yog nce tsom. Yuav kom ua tau raws li tus yam ntxwv thiab cov kev cai ntawm ntau qhov chaw ntawm daim ntawv thov, xws li cov ntawv drilling, milling, qhuav haujlwm, kev thev, kos duab, thiab lwm yam., Coatings nrog rau qhov zoo sib xws ntawm qhov no. Tom qab kev ua haujlwm tas li thiab kev sim, kev ua tiav tau tiav hauv qee lub teb, xws li daim ntawv thov high-aluminium TiX (Al: Ti-2: 1) coatings ntawm milling, non-Ti txheej AICrN rau high-speed dry hobbing, lub composite txheej CrN + TISIN on drilling, composite txheej TIN + TCX ntawm kos duab puab. Lub neej saum npoo ntawm lawv yog zoo dua li lwm cov coatings. Tsis tas li ntawd, ntau hom kev sib txuas rau kev txhuam (corrosion resistance) (Crx txheej), "self-lubricating (WC / C txheej), cov khoom siv mos (MoS2 txheej), thiab cov ntaub ntawv zoo zog (CBN, Dimond txheej) txhua qhov thoob plaws. nrog cov kev sib txuas lus ntawm PVD txheej yees, tshiab ntxiv coatings yuav tsim los hloov lawv.

3. Cov txheej txheem tso ntawm cov txheej yuav tsum nano-qhov loj

Nrog rau txoj kev loj hlob ntawm nanotechnology thiab kev kho tshiab ntawm txheej tshuab, nano-lub txheej txheej kuj tau nyiam cov xim ntawm ntau cov neeg tshawb nrhiav thiab cov koom haum PVD txheej txheem. Lub nanocrystallization ntawm cov khoom tso tawm ntawm lub txheej yuav ua kom lub zog ntawm qhov txheej thiab cov substrate, tib lub sij hawm nws tuaj yeem txo qhov mob npoo ntawm cov txheej. Tam sim no, feem ntau ntawm cov txheej txheej ntawm cov khoom tso tawm mas tseem loj. Txawm hais tias muaj ntau qhov hu ua nano-scale coatings, tseem muaj peev xwm tseem muaj nyob rau lawv qhov kawg nkaus, thiab txheej txheej tseem yog ntxhib. Txo qhov luaj li cas ntawm qhov txheej txheem ntawm txheej thiab tswj kev ruaj ntseg txheej txheem kom tsis txhob muaj qhov txawv txav tshwj xeeb yuav ua lwm txoj kev loj hlob ntawm lub txheej. Tshwj xeeb tshaj yog rau daim ntawv thov rau daim iav ntsej muag, tab sis qee cov tuam txhab tsim cov iav txheej, qhov zoo thiab ruaj khov yog cov neeg pluag thiab cov txheej txheem yog ib qho nyuaj heev. Nyob rau hauv lub neej yav tom ntej, nanocrystallization ntawm cov txheej lo thiab cov nanometerization ntawm cov txheej txheej txheej yuav yog lub ntsiab kev loj hlob, uas yog ib qho tseem ceeb ntawm kev txhim kho cov txheej txheem ntawm lub txheej thiab kev txo kev ntxhov siab ntawm cov txheej, thiab nws yuav ua rau smoothness ntawm iav lub ntsej muag thiab ntxiv nthuav cov ntaub ntawv ntawm coatings nyob rau hauv lub precision tsim kev lag luam.

4. Cov txheej txheem txheej txheem txheej txheem yog qhov tsawg dua thiab qis dua

Los ntawm qhov kub thiab txias ntawm ib ncig 1000 ° C rau cov txheej txheem CVD txheej txheej txog li 500 ° C rau PVD thiab PECVD coatings, qhov kub thiab txias ntawm cov txheej. Yog li, daim ntawv thov txheej txheem ntawm txheej txheej kuj zoo dua, tiam sis qhov kub thiab txias ntawm thaj chaw ze li ntawm 500 ° C tseem muaj kev phom sij rau kev ua hauj lwm, xws li deformation thiab txo qhov nyuaj ntawm cov substrate. Vim li no, cov kev cai tshwj xeeb raug thov kom ua ntej kev kho cua sov ua haujlwm ntawm lub qhov workpiece. Piv txwv, qhov kub thiab txias ntawm cov khoom ua haujlwm yuav tsis pub tsawg tshaj qhov ntsuas kub. Cov txheej txheem kub dua, xws li cov kub uas txias hauv qab 200 ° C, yuav tshem tawm cov kev txwv no, uas ua ntau hom khoom siv rau txheej, thiab xaiv cov kev kho thaum ntxov thaum tshav kub kho. Nyob rau tib lub sij hawm, daim ntawv thov cov thawv kub tsis tshua muaj peev xwm txo qhov kev siv zog ntawm cov khoom siv pov tseg, thiab muaj kev tiv thaiv ib puag ncig ntawm kev txuag hluav taws xob. Tsis tas li ntawd, qhov txo ntawm qhov ntsuas kub yuav txo cov cua sov thiab cua txias kom ntev thiab tom qab muab tus menyuam xa cov txheej txheem. Li ntawd, cov coatings uas tsis tshua muaj neeg sab nrauv yuav txhawb nqa daim ntawv thov thiab qhov nrov ntawm lub txheej thiab nws yuav yog ib qho tseem ceeb ntawm PVD coating kev loj hlob. Tam sim no, qee cov tuam txhab muaj txheej txheem tsim tau cov cryogenic txheej (txheej kub yog li tsawg txog 250 ° C). Txawm li cas los xij, vim muaj kev tsis ruaj khov thiab kev pluag tsis zoo ntawm lub txheej thiab cov substrate, tsis muaj ntau daim ntawv thov tau ua thiab nws xav tau kev txhim kho ntxiv.