I-vacuum coating isetyenziswa kakhulu kwizixhobo zeemoto, izixhobo zokusika, ii-molds, ii-electronics, izixhobo zokuhombisa, kunye nezinye iishishini ukuphucula ukusebenza komphezulu kunye neempawu zokusebenza. Ngexesha lenkqubo yokuhombisa, ifilimu encinci ifakwa kumphezulu we-substrate phantsi kweemeko ze-vacuum, yenze i-functional coating eneempawu ezithile ezifana nobunzima obuphezulu, ukumelana nokuguguleka, ukumelana nokugqwala, ukungqubana okuphantsi, okanye inkangeleko yokuhombisa.
Umbuzo oqhelekileyo kukuba ingaba i-vacuum coating ngokwayo iya kuchaphazela ubulukhuni bezinto ezisetyenziswa kwi-substrate. Impendulo ayinyanzelekanga. Kwiinkqubo ezininzi, injongo ephambili ye-vacuum coating kukutshintsha iipropati zomphezulu we-workpiece endaweni yokutshintsha iipropati zoomatshini ezininzi ze-substrate. Nangona kunjalo, isiphumo sokwenyani sixhomekeke kubuchwepheshe be-coating, ubushushu benkqubo, izinto ezisetyenziswa kwi-substrate, uyilo lwe-coating, kunye neeparamitha zenkqubo.
1. Ukwaleka ngeVacuum kutshintsha kakhulu iipropati zomphezulu
Iitekhnoloji zokugquma i-vacuum ezifana ne-PVD (Physical Vapor Deposition), i-PECVD (Plasma-Enhanced Chemical Vapor Deposition), kunye nezinye iinkqubo zokufaka i-vacuum zenza ifilimu encinci esebenzayo kumphezulu we-substrate.
Ngokungafaniyo nonyango lobushushu obukhulu, olunokutshintsha kakhulu ulwakhiwo lwe-metallurgical kunye neempawu zoomatshini zezinto kububanzi bazo bonke, i-vacuum coating idla ngokuchaphazela kuphela umaleko womphezulu. Ubukhulu be-coating buhlala bukwi-micrometer okanye kwi-sub-micrometer, kuxhomekeke kwindlela yokusetyenziswa kunye nenkqubo yokubeka.
Umzekelo, ii-PVD coatings eziqinileyo ezifana neTiN, TiCN, CrN, TiAlN, kunye neAlTiN zinokubonelela ngobunzima bomphezulu kunye nokumelana nokuguguleka okuphezulu kakhulu kune-substrate engaphantsi. Nangona kunjalo, oku akuthethi ukuba ubunzima be-substrate yonke butshintshiwe ngendlela efanayo.
Ngoko ke, xa kuvavanywa impembelelo ye-vacuum coating kwi-hardness, kubalulekile ukwahlula phakathi kwe-substrate hardness kunye ne-coating hardness.
2. Ngaba i-PVD Coating ingandisa ubulukhuni bomphezulu?
Kwizicelo ezininzi, i-PVD coating isetyenziselwa ngokukodwa ukuphucula ubulukhuni bomphezulu.
Iingubo eziqinileyo ezifakwe ziinkqubo ezifana nokuphuma kwe-cathodic arc kunye nokutshiza kwe-magnetron zinokwenza iinkqubo zokugquma ezixineneyo nezinamathelayo kakhulu ezinobunzima obuphezulu kunye nokumelana okuhle kokuguguleka.
Kwizixhobo zokusika, umzekelo, i-PVD coating eqinileyo inokunciphisa ukuguguleka okurhabaxa, ukuguguleka kwe-glue, kunye nokungqubana kwi-interface yesixhobo-yomsebenzi. I-coating isebenza njengomaleko womphezulu okhuselayo ngelixa i-substrate inika ukuqina okufunekayo kunye nenkxaso yoomatshini.
Ngoko ke ukusebenza kokugqibela akuqinisekiswanga kuphela bubunzima bengubo ngokwayo, kodwa nangokudityaniswa kwezi zinto zilandelayo:
Ubulukhuni bokugquma + ukunamathela kogquma + ubukhulu bokugquma + ubulukhuni be-substrate + ujongano lokugquma/i-substrate + uyilo lokugquma.
Ukwaleka okuqinileyo akuqinisekisi ngokuzenzekelayo ukusebenza okuphezulu ukuba isiseko sithambile kakhulu okanye ukuba ukunamathela kokwaleka akwanelanga.
3. Ngaba ubushushu bokugquma buza kuchaphazela ubulukhuni be-substrate?
Le yenye yezona zinto zibalulekileyo xa kuvavanywa ukuba ingaba ukugqunywa kwe-vacuum kungabuchaphazela na ubulukhuni be-substrate.
Iinkqubo ezahlukeneyo ze-PVD kunye ne-PECVD zisebenza ngaphakathi kobubanzi bobushushu obahlukeneyo. Ngexesha lokufakwa, i-substrate ivezwa kumandla obushushu aveliswa yi-plasma, i-ion bombardment, imithombo yokufuma, okanye ezinye iimeko zenkqubo.
Kwizinto ezibuthathaka kubushushu, ubushushu obugqithisileyo be-substrate okanye ubushushu obude bunokuchaphazela ulwakhiwo lwe-microstructure yokuqala kunye neempawu zoomatshini.
Umzekelo, ezinye iintsimbi zezixhobo eziqinileyo zifumana iimpawu zazo zoomatshini ngokusebenzisa iinkqubo ezithile zokucima kunye nokulungisa. Ukuba ubushushu bokugquma budlula kakhulu ubushushu obufanelekileyo bokulungisa, kukho ithuba lokuba kubekho iziphumo zokulungisa, ezinokunciphisa ubunzima be-substrate.
Ke ngoko, kwiintsimbi eziqinileyo kunye nezinye izinto ezisetyenziswa kakhulu kubushushu, inkqubo yokugquma kufuneka iyilwe ngokwemeko yokunyanga ubushushu kwezinto kunye nobushushu obuvumelekileyo benkqubo.
4. Ukuguqulwa kwe-Ion Bombardment kunye nokuguqulwa komphezulu
Kwiinkqubo ezininzi ze-PVD, i-substrate ifakwa kwi-ion bombardment ngaphambi nangexesha lokufakwa kwayo.
Ukucocwa kwe-ion okanye i-plasma kunokususa ungcoliseko lomphezulu kwaye kusebenze umphezulu we-substrate, kuphucula ukunamathela kwe-coating. Ngexesha lokufakwa, ukuqhushumba kwe-ion okulawulwayo kunokuchaphazela ukuxinana kwefilimu, uxinzelelo olushiyekileyo, isakhiwo esincinci, kunye nokunamathela kwe-coating.
Nangona kunjalo, amandla e-ion agqithisileyo okanye iiparameter zenkqubo ezingafanelekanga zinokubangela iziphumo ezingathandekiyo ezifana nokufudumeza okugqithisileyo kwe-substrate, umonakalo womphezulu, okanye uxinzelelo olungaphezulu lwentsalela.
Ke ngoko, iiparameter ezifana ne-bias voltage, i-arc current, amandla okukhupha, uxinzelelo lokusebenza, ubushushu be-substrate, kunye nesantya sokufaka kufuneka zilawulwe ngokufanelekileyo ngokwezinto ze-substrate kunye nenkqubo yokugquma.
5. Ukuqina kweCoating kwahlukile kwi-Substrate Hardness
Ukungaqondani okuqhelekileyo kukuba isixhobo somsebenzi siba “lukhuni” kuba nje kufakwe uqweqwe oluqinileyo phezu komphezulu waso.
Enyanisweni, i-vacuum coating idla ngokudala umaleko oqinileyo womphezulu, ngelixa ubunzima obukhulu be-substrate buxhomekeke kakhulu kwimeko yayo yokuqala kunye nonyango lobushushu.
Umzekelo, isixhobo sokusika i-carbide sinokuba ne-substrate eqinileyo kunye ne-PVD coating enzima nangakumbi. I-coating iphucula ukumelana nokuguguleka komphezulu kunye nokusebenza kwe-tribological, ngelixa i-substrate ye-carbide inika amandla kunye nokuqina kwesakhiwo.
Ngokufanayo, kwizinto zentsimbi eqinileyo, i-PVD coating inokubonelela ngomphezulu oqinileyo nongagugiyo ngaphandle kokutshintsha ngokusisiseko ubunzima bentsimbi engaphantsi, ukuba nje ubushushu bokubekwa buhlala ngaphakathi kwefestile yenkqubo efanelekileyo.
6. Indlela Yokuthintela Ukwaleka Kwe-Vacuum Ekuchaphazeleni Ubulukhuni Be-Substrate
Ukuze kugcinwe iipropati zokuqala zoomatshini ze-substrate, inkqubo yokugquma kufuneka ilungiswe ngokwezinto ezisetyenzisiweyo kunye nokusetyenziswa kwazo.
Okokuqala, izinto ezisetyenziswa kwi-substrate kunye nemeko yonyango lobushushu kufuneka ziqinisekiswe ngaphambi kokugquma. Amanqanaba ahlukeneyo entsimbi yezixhobo, intsimbi engatyiwayo, ikhabhayithi, ii-alloys ze-aluminium, kunye nezinye izinto zinemida eyahlukeneyo yobushushu.
Okwesibini, ubushushu bokugquma kufuneka bulawulwe ngaphakathi koluhlu olufanelekileyo. Kwizinto ezibuthathaka kubushushu, kungakhetha iPVD enobushushu obuphantsi okanye enye inkqubo efanelekileyo yokufaka.
Okwesithathu, iiparameter zenkqubo ezifana ne-bias voltage, amandla e-ion, uxinano lwe-plasma, izinga lokufakwa, uxinzelelo lokusebenza, kunye nexesha lenkqubo kufuneka ziphuculwe ukuze kufezekiswe ukusebenza okufunekayo kokugquma ngaphandle kwemiphumo egqithisileyo yobushushu okanye ukuqhushumba kwe-ion.
Okokugqibela, iindawo ezigqunyiweyo kufuneka zihlolwe ngovavanyo olufanelekileyo, oluquka uvavanyo lokuqina kwe-micro, uvavanyo lokunamathela kwe-coating, uvavanyo lokuguguleka, ukulinganiswa koburhabaxa bomphezulu, kunye nohlalutyo lwe-metallographic, kuxhomekeke kwisicelo.
7. Isiphelo
Ngoko ke, ngaba i-vacuum coating ichaphazela ubulukhuni bezinto ezibonakalayo?
Ngokubanzi, i-vacuum coating yinkqubo yobunjineli bomphezulu kwaye yenzelwe ukutshintsha iipropati zomphezulu wento endaweni yokutshintsha kakhulu ubulukhuni bayo obukhulu. Iingubo ze-PVD ezinzima zinokuphucula kakhulu ubulukhuni bomphezulu, ukumelana nokuguguleka, ukuziphatha kokungqubana, ukumelana nokugqwala, kunye nobomi benkonzo ngelixa zigcina iipropati zoomatshini ze-substrate.
Nangona kunjalo, ubulukhuni bokuqala be-substrate bunokuchaphazela ukuba inkqubo yokugquma iveza ubushushu obugqithisileyo okanye ukuqhushumba kwee-ion okungafanelekanga, ngakumbi kwiintsimbi eziphathwe ngobushushu kunye nezinye izinto ezinobuzwelo kubushushu.
Kungoko ke, ukukhetha iteknoloji efanelekileyo yokufaka i-vacuum, izinto zokugquma, ubushushu be-substrate, iimeko ze-ion bombardment, kunye neeparamitha zenkqubo kubalulekile.
Ngokulungiswa kwefestile yenkqubo efanelekileyo kunye nezixhobo, i-vacuum coating inokufezekisa indibaniselwano enqwenelekayo yobunzima obuphezulu bomphezulu, ukunamathela okuqinileyo kwe-coating, ukumelana nokuguguleka okugqwesileyo, kunye neempawu ezizinzileyo ze-substrate, okubonelela ngesisombululo esisebenzayo sobunjineli bomphezulu kwizicelo ezifuna ushishino.
-Eli nqaku lipapashwe ngu umenzi wezixhobo zokugquma nge-vacuumI-Zhenhua Vacuum
Ixesha lokuthumela: Sep-22-2026