Kwi-physical vapor deposition (PVD), uxinano lwefilimu yenye yezona zinto zibalulekileyo ezichaza ukusebenza komatshini, ukukhanya, umbane, kunye nokumelana nokugqwala kwengubo. Kwiingubo eziqinileyo, iifilimu zokuhombisa, iingubo ezikhanyayo, kunye neefilimu ezincinci ezisebenzayo, isakhiwo esincinci sidla ngokunxulunyaniswa nokunamathela okungcono, ubulukhuni obuphezulu, ukubola okuphantsi, kunye nokumelana okuphuculweyo kokuguguleka kunye nokonakaliswa kwendalo.
Nangona kunjalo, uxinano lwefilimu alumiselwa nje ngokunyusa amandla okufaka okanye izinga lokufaka. Eyona nto iphambili, inxulumene ngokusondeleyo noxinano lwamandla oluziswa kwifilimu ekhulayo, olulawula ukuhamba komphezulu, ukusasazeka kwe-adatom, ukuziphatha kwe-nucleation, ukukhula kweenkozo, kunye nokuguquka kweziphene ngexesha lokufaka.
Ukuqonda ubudlelwane phakathi kokufakwa kwamandla, ukuqhushumba kwee-ion, ubushushu be-substrate, kunye nesakhiwo sefilimu kubalulekile ukuze kuphuculwe iinkqubo ze-PVD.
1. Yintoni i-Energy Density kwi-PVD?
Kwi-PVD, igama elithi uxinano lwamandla lichaza ngokubanzi ubungakanani bamandla aziswa kwi-substrate okanye kwifilimu ekhulayo kwindawo nganye kwaye ngaphakathi kwexesha elithile lenkqubo. Kwi-practical process engineering, inxulunyaniswa ngokusondeleyo neeparameters ezifana namandla e-ion, i-ion flux, i-substrate bias, uxinano lwe-plasma, amandla okukhupha, izinga lokufaka, kunye nobushushu be-substrate.
Kwiinkqubo ze-PVD ezine-ionized, ngakumbi i-cathodic arc deposition kunye ne-high-power magnetron sputtering, ifilimu ekhulayo ayivezwanga kuphela kwiintlobo ze-neutral deposition kodwa nakwii-energy ions. Xa kusetyenziswa i-substrate bias efanelekileyo, ezi ions ziyakhawuleziswa ukuya kumphezulu we-substrate, zidlulisela amandla kwifilimu ekhulayo.
Olu galelo lwamandla luchaphazela ukuhamba kweeathomu kunye nee-ion ezibekwe phezu komhlaba. Amandla aneleyo avumela ii-adatoms ukuba zoyise imiqobo yokusasazwa kwendawo, zifudukele kwiindawo ezifanelekileyo ngamandla, kwaye zizalise izithuba ezincinci ngaphakathi kwefilimu ekhulayo. Ngenxa yoko, ifilimu inokuguquka ukusuka kwisakhiwo esineembobo ukuya kwisakhiwo esincinci nesixineneyo.
Ngoko ke, uxinano lwamandla kufuneka luthathwe njengebhulorho ebalulekileyo phakathi kweeparamitha zenkqubo ye-PVD kunye nesakhiwo sokugqibela sefilimu.
2. Kutheni igalelo lamandla limisela ubuninzi befilimu
Ngexesha lokuqala lokufakwa kwezinto, ii-athomu okanye ii-ion ezifika kwi-substrate aziyi kwakheka ngoko nangoko umaleko oqinileyo. Ziyaqhekeka phezu komhlaba, zifuduke, kwaye kancinci kancinci zenze iziqithi ezithi ekugqibeleni zihlangane zibe yifilimu eqhubekayo.
Ukuba iintlobo ezifikayo azinamandla aneleyo okuhambahamba, ukuhamba kwazo kumphezulu kuyanqongophala. Zisenokuhlala kufutshane neendawo zazo zokuqala zokufika, nto leyo ebangela ukuba umphezulu ungaphelelanga kwaye kubekho imingxunya emincinci. Njengoko ukubola kuqhubeka, ezi mingxunya zinokukhula zibe yi-columnar kunye ne-porous microstructure.
Le nto ibaluleke kakhulu kwiinkqubo zokubeka izinto ezishushu kakhulu okanye iinkqubo ezisebenza ngaphandle kokusetyenziswa kwee-ion ezaneleyo.
Xa amandla aziswa kwifilimu ekhulayo enyuka ukuya kwinqanaba elifanelekileyo, ukusasazeka komphezulu kuya kusebenza ngakumbi. Iintlobo ezifakwe kwi-deposit zinokuhamba phezu komphezulu kwaye zihlale kwiindawo ezisebenzisa amandla aphantsi, ngelixa ukuqhushumba kwe-ion kunokukhuthaza ukuhlelwa kwakhona kwe-athomu, ukunciphisa iziphene, kunye nokuvalwa kwe-void. Ifilimu ephumayo ngokubanzi ibonisa imo exineneyo kunye nokubophelelana okuqinileyo kwe-interfacial.
Ngokwembono yesakhiwo esincinci, injongo ayikoku "nyusa amandla" nje kuphela, kodwa kukumisela umlinganiselo ofanelekileyo wamandla-ukuya-kwi-flux ngexesha lokukhula kwefilimu.
3. Indima yoBucala beSubstrate
Phakathi kweeparamitha zenkqubo yePVD ezikhoyo, i-substrate bias voltage yenye yezona ndlela zithe ngqo zokulawula amandla e-ion bombardment.
Ukusebenzisa i-negative bias kwi-substrate kudala amandla ombane akhawulezisa ii-ions ezitshajiweyo kakuhle kumphezulu we-substrate. Ukwandisa ubukhulu be-bias ngokubanzi kwandisa amandla e-ion impact, nto leyo enokuphucula ukusebenza komphezulu kunye nokuqina kwefilimu.
Umzekelo, xa kufakwa i-TiN, i-CrN, i-TiAlN, i-DLC, kunye nezinye izinto ezisebenzayo, imeko efanelekileyo yokukhetha inokuphucula uxinano lwefilimu, ubulukhuni, ukunamathela, kunye nokumelana nokuguguleka.
Nangona kunjalo, ubudlelwane phakathi kwe-bias voltage kunye nomgangatho wefilimu abuhambelani. Ukuba amandla e-ion bombardment aba ngaphezulu, iziphumo ezininzi ezingathandekiyo zinokuvela, kubandakanya ukuphinda kuvele, ukufakwa, ukuqokelelwa koxinzelelo olushiyekileyo, ukufudumeza i-substrate, ukuveliswa kweziphene, kwanokonakala kwe-substrate.
Ukuqhuma kwee-ion ezininzi kunokususa ii-athomu ezazibekwe ngaphambili kumphezulu wefilimu, kunciphisa izinga lokufakwa kwe-net kwaye kunokutshintsha ukwakheka kwengubo.
Ke ngoko, ukhetho olufanelekileyo lwe-substrate kufuneka lumiselwe ngokwezinto ezisetyenziswa kwi-substrate, inkqubo yokugquma, iintlobo ze-ion, uxinano lwe-plasma, izinga lokufakwa, kunye neempawu zefilimu ezifunekayo, endaweni yokulandela nje i-voltage ephezulu ye-bias.
4. I-Ion Flux kunye ne-Ion Energy maziqwalaselwe kunye
Uxinano lwefilimu lulawulwa ngamandla angaphezu kwee-ion kuphela. I-ion flux, oko kuthetha inani lee-ion ezifikelela kwi-substrate ngokwendawo kunye nexesha, ibaluleke ngokulinganayo.
I-ion flux enamandla aphezulu ingayitshintsha kakhulu ifilimu ekhulayo, kodwa ukuba i-ion flux iphantsi kakhulu, amandla apheleleyo adluliselwe kwifilimu asenokungabi nganelanga. Ngokwahlukileyo koko, i-ion flux ephezulu kakhulu kumandla agqithisileyo inokubangela ukuqhushumba okukhulu kunye nokuphikiswa okungafunekiyo okanye umthwalo wobushushu.
Ngenxa yesi sizathu, uphuhliso lwenkqubo ye-PVD oluphambili lugxila kakhulu ekulawuleni ubudlelwane obudibeneyo phakathi kwamandla e-ion kunye ne-ion flux, endaweni yokuphatha i-substrate bias njengepharamitha ehlukanisiweyo.
Olu lwalamano lubaluleke kakhulu kwiinkqubo zokufakwa kwe-ionized kakhulu ezifana ne-cathodic arc PVD kunye ne-high-power impulse magnetron sputtering (HiPIMS). Ngokwandisa i-ionization fraction ye-deposition species, ezi teknoloji zibonelela ngokuguquguquka okukhulu ekulawuleni amandla aziswa kwifilimu ekhulayo.
5. Ubuninzi bamandla kunye nophuhliso lwezakhiwo ezincinci
Impembelelo yobuninzi bamandla inokuqondwa nangokukhula kwesakhiwo sefilimu.
Phantsi kweemeko zokufumba amandla aphantsi, ukuhamba okulinganiselweyo komphezulu kunokukhokelela ekukhuleni okungenanto okanye okukwikholamu, ingakumbi xa ubushushu be-substrate buphantsi kwaye iintlobo ezigciniweyo azinakuhamba okwaneleyo.
Njengoko igalelo lamandla lisanda ngaphakathi kwefestile yenkqubo efanelekileyo, ukusasazeka komphezulu kuya kusebenza ngakumbi kwaye isakhiwo esincinci kancinci kancinci siba ncinci ngakumbi. Imida yeenkozo kunye neembobo eziphakathi kweekholamu zinokuncitshiswa, ngelixa uphahla luqhubeka ngakumbi kwaye luzinzile ngoomatshini.
Nangona kunjalo, ngokwanda koxinano lwamandla, le nkqubo inokungena kwinkqubo elawulwa yibhombu enamandla ye-ion. Ukuphinda-phinda kunye nokuphuma kweeathomu kuya kuba yinto ebalulekileyo ngakumbi, nto leyo enokuvelisa uxinzelelo oluphezulu oluxineneyo. Nangona uqweqwe lunokuhlala luxinene, uxinzelelo olugqithisileyo lwangaphakathi lunokunciphisa ukunamathela kwaye lukhokelele ekuqhekekeni okanye ekuqhekekeni.
Ngenxa yoko, kuhlala kukho ifestile efanelekileyo yoxinano lwamandla kunokuba kubekho ubudlelwane obulula apho amandla aphezulu ahlala evelisa iifilimu ezingcono.
6. Ubuninzi bamandla kunye nesiphumo "sokugqobhoza i-atomic"
Enye yeendlela ezibalulekileyo ezinxulumene nokuqhuma kwee-ion ezinamandla yimpembelelo yokungena kweeathomu.
Ngexesha lokuqhuma kwee-ion ezinamandla, ii-ion ezingenayo zidlulisela amandla kwiiathom ezingaphezulu komhlaba, nto leyo ebangela ukufuduka kweeathom kwindawo ethile kunye nokuhlelwa kwakhona. Oku kunokunyanzela iiathom ukuba zibe ziimo ezixineneyo kwaye kuthintele uphuhliso lwevolumu evulekileyo kwifilimu ekhulayo.
Isiphumo singaba yi-microstructure exineneyo enobulukhuni obuphuculweyo kunye nokuzinza koomatshini.
Le ndlela yokusebenza ibaluleke kakhulu kwiingubo zePVD eziqinileyo. Kwiinkqubo ezifana neTiN, CrN, TiCN, AlTiN, kunye neengubo zenitride ezinxulumene nazo, ukuqhushumba kwee-ion ezifanelekileyo kunokunceda kwi-film density ephezulu kunye nokusebenza kakuhle koomatshini.
Nangona kunjalo, ukugqobhoza okugqithisileyo kweathomu kunokubangela uxinzelelo olukhulu oluxineneyo. Ke ngoko, ugquma oluxineneyo kakhulu alusoloko lulolona gquma lufanelekileyo ukuba uxinzelelo lwangaphakathi ludlula amandla okunamathela kwe-substrate/coating interface.
Injongo esebenzayo kukufezekisa ulungelelwaniso phakathi koxinano lwefilimu, uxinzelelo olushiyekileyo, ukunamathela, ubulukhuni, kunye nesantya sokufumba.
7. Izinga lokufaka imali likwatshintsha ibhalansi yamandla
Uxinano lwamandla alunakuvavanywa ngokuzimeleyo ngesantya sokufakwa kwawo.
Ukuba izinga lokufakwa kwezinto liyanda kakhulu ngelixa iimeko zokufakwa kwezinto kwi-ion zingatshintshi, umlinganiselo wokufakwa kwezinto kwi-ion enamandla kwi-incoming deposition flux unokuncipha. Ngamanye amazwi, izinto ezininzi zifakwa ngaphandle kokwanda okulinganayo kwamandla akhoyo okukhuthaza ukusasazeka komphezulu kunye nokulungiswa kwakhona kwesakhiwo.
Oku kunokubangela utshintsho oluya kwisakhiwo esincinci kakhulu.
Ngokwahlukileyo koko, ukugcina umlinganiselo ofanelekileyo we-ion-to-neutral flux kunokunceda ukubuyisela utshintsho kwisantya sokufakwa kwefilimu kunye nokugcina ulwakhiwo lwefilimu oluhambelanayo.
Yingakho uphuhliso lwenkqubo ye-PVD yemizi-mveliso kufuneka luqwalasele kakhulu kungekuphela nje amandla kunye nesantya sokufakwa kwezinto, kodwa nakubudlelwane phakathi koxinano lwangoku lwee-ion, amandla e-ion, ukuhamba kokufakwa kwezinto, kunye nokukhetha izinto ezingaphantsi komhlaba.
8. Ubushushu beSubstrate kunye neIon Bombardment zisebenza kunye
Ubushushu be-substrate yenye into ebalulekileyo echaphazela ukuxinana kwefilimu.
Amandla obushushu anika ii-athomu ezigciniweyo amandla okushukuma, ngelixa ukuqhushumba kwee-ion kunika amandla ongezelelweyo e-kinetic. Zombini iindlela zinokukhuthaza ukusasazeka komphezulu kunye nokulungiswa kwakhona kwesakhiwo.
Kwizinto ezisetyenziswa kwi-substrates ezinobungqingili ezifana neeplastiki zobunjineli, izinto ezibonakalayo, kunye nezinto ezithile ze-elektroniki, ukunyusa ubushushu be-substrate kusenokungenzeki. Kwezi meko, ukuqhuma kwee-ion ezilawulwayo kuba luncedo kakhulu kuba kunokubonelela ngamandla ongezelelweyo kwifilimu ekhulayo ngaphandle kokuxhomekeka kuphela ekufudumaleni kobushushu.
Le yenye yeenzuzo ezibalulekileyo zeenkqubo ze-PVD ezincediswa yi-ion: uxinano lwefilimu lunokwandiswa ngokuqhushumba kwamasuntswana anamandla ngelixa kugcinwa amaqondo obushushu aphantsi e-substrate.
Nangona kunjalo, i-ion bombardment ngokwayo ivelisa ubushushu. Ke ngoko, ubushushu be-substrate bufanele bujongwe kuyo yonke inkqubo yokubeka ukuze kuthintelwe ukuguquka kobushushu okanye ukuwohloka kwezinto ezinobubushushu.
9. Ubuninzi bamandla kufuneka buhambelane nenkqubo yokugquma
Izixhobo zokugquma ezahlukeneyo zinemfuno ezahlukeneyo zokuqhuma kwe-ion kunye nokufakwa kwamandla.
Kwizinto zokugquma ze-nitride eziqinileyo, ukugquma kwee-ion ezinamandla kudla ngokuba luncedo ekufumaneni uxinano oluphezulu, ubulukhuni obuphezulu, kunye nokunamathela okuqinileyo. Kwizinto zokugquma ezibonakalayo, ukugquma okugqithisileyo kunokufaka uxinzelelo okanye kutshintshe ukulingana kwe-refractive-index. Kwizinto zokugquma zesinyithi, amandla e-ion agqithisileyo anokuchaphazela imo yomphezulu, ukukhanya okuqaqambileyo, umbala, kunye noxinzelelo olushiyekileyo.
I-DLC kunye nezinye izinto zokugquma ezisekelwe kwikhabhoni zinovelwano ngakumbi kwibhalansi phakathi kwamandla e-ion kunye neemeko zokubekwa kuba amandla e-ion anokuchaphazela uqwalaselo lwebhondi kwaye ke ngoko umlinganiselo phakathi kwe-sp² kunye ne-sp³ bonding.
Ngoko ke, akukho "ubuninzi bamandla obuphezulu" obusetyenziswa kuyo yonke i-PVD coating. Ifestile yenkqubo efanelekileyo kufuneka imiselwe ngokwenkqubo yezinto, i-substrate, ubukhulu befilimu, izinga lokufakwa, iipropati zoomatshini ezifunekayo, iimfuno zokukhanya, kunye nemida yobushushu.
10. Ukusuka kwiiParamitha zeNkqubo ukuya kwiNtsebenzo yeFilimu
Kwimveliso ye-PVD yemizi-mveliso, uxinano lwamandla kufuneka ekugqibeleni luvavanywe ngeepropati zefilimu ezinokulinganiswa kunokuba kuhlolwe ngokweeparamitha zenkqubo kuphela.
Indlela yokufaka amandla elungiselelwe kakuhle kufuneka incedise ekuphuculeni uxinano lwefilimu, ubulukhuni, ukunamathela, ukumelana nokuguguleka, ukumelana nokugqwala, uzinzo lwembonakalo, kunye nokusebenza kwezithintelo, kuxhomekeke kwisicelo.
Iindlela zokuchonga iimpawu ezifana ne-SEM enqamlezileyo, i-XRD, i-nanoindentation, uvavanyo lokukrwela, umlinganiselo woxinzelelo olushiyekileyo, uhlalutyo loburhabaxa bomphezulu, kunye nemephu yobukhulu befilimu zinokusetyenziswa ukuseka ubudlelwane phakathi kweeparamitha zenkqubo kunye nokusebenza kokwaleka.
Oku kuvumela inkqubo ye-PVD ukuba isuke kuhlengahlengiso olulula lweeparameter iye kwifestile yenkqubo ecwangcisiweyo ngakumbi kunye nesicwangciso solawulo lwesakhiwo se-microstructure.
Isiphelo
Kwi-PVD, uxinano lwamandla yenye yezinto ezisisiseko ezilawula utshintsho ukusuka kwizakhiwo ezipakishwe ngokukhululekileyo ukuya kwiifilimu ezixineneyo nezizinzileyo. Amandla e-ion afanelekileyo kunye nokuhamba kwe-ion kunokuphucula ukusasazeka komphezulu, kukhuthaze ukuhlelwa kwakhona kweathomu, kunciphise ukwakheka kwe-void, kwaye kuphucule uxinano lwefilimu.
Nangona kunjalo, amandla aphezulu akuthethi ngokuzenzekelayo ukusebenza ngcono kokugquma. Ukuqhushumba kwee-ion ezigqithisileyo kunokubangela ukuphindaphindeka, ukufudumeza i-substrate, uxinzelelo oluphezulu lokuxinana, kunye nomonakalo we-interface. Eyona nto ibalulekileyo kukumisela ibhalansi efanelekileyo phakathi kwamandla e-ion, i-ion flux, izinga lokufakwa, i-substrate bias, uxinano lwe-plasma, kunye nobushushu be-substrate.
Ngoko ke, kwizixhobo ze-PVD zanamhlanje, ukukwazi ukulawula igalelo lamandla akuyondlela nje yokwandisa ukusebenza kakuhle kokubeka izinto—sisixhobo esibalulekileyo sobunjineli besakhiwo sefilimu kunye nokufezekisa ukusebenza okuzinzileyo nokuphindaphindwayo kokwaleka.
-Eli nqaku lipapashwe nguumenzi wezixhobo zokugquma nge-vacuum I-Zhenhua Vacuum
Ixesha lokuthumela: Agasti-04-2026