Ekufakweni komhwamuko ngokomzimba (i-PVD), ubuningi befilimu bungenye yezinkomba ezibalulekile ezinquma ukusebenza kokumelana nokugqwala komshini, okubonakalayo, okukagesi, kanye nokugqwala kwengubo. Ngezingubo eziqinile, amafilimu okuhlobisa, izingubo ezibonakalayo, kanye namafilimu amancane asebenzayo, isakhiwo esincane esiminyene ngokuvamile sihlotshaniswa nokunamathela okungcono, ubulukhuni obuphezulu, ukuvuleka okuphansi, kanye nokumelana okuthuthukisiwe kokuguguleka kanye nokuwohloka kwemvelo.
Kodwa-ke, ukuqina kwefilimu akunqunywa nje ngokwanda kwamandla okufakwa noma izinga lokufakwa. Emongweni wayo, kuhlobene eduze nobuningi bamandla obulethwa efilimini ekhulayo, obulawula ukuhamba komhlaba, ukusabalala kwe-adatom, ukuziphatha kwe-nucleation, ukukhula kwezinhlamvu, kanye nokuvela kwesici ngesikhathi sokufakwa.
Ngakho-ke ukuqonda ubudlelwano phakathi kokufakwa kwamandla, ukuqhuma kwama-ion, izinga lokushisa le-substrate, kanye nesakhiwo sefilimu kubalulekile ukuze kuthuthukiswe izinqubo ze-PVD.
1. Kuyini Ubuningi Bamandla ku-PVD?
Ku-PVD, igama elithi ubuningi bamandla ngokuvamile lichaza inani lamandla alethwa ku-substrate noma ifilimu ekhulayo endaweni ngayinye futhi ngaphakathi kwesikhathi senqubo esinikeziwe. Kubunjiniyela benqubo esebenzayo, lihlotshaniswa eduze nemingcele efana namandla e-ion, i-ion flux, i-substrate bias, ubuningi be-plasma, amandla okukhipha, izinga lokufakwa, kanye nokushisa kwe-substrate.
Ngezinqubo ze-PVD ezi-ionized, ikakhulukazi ukufakwa kwe-cathodic arc kanye nokugxumela kwe-magnetron enamandla aphezulu, ifilimu ekhulayo ayivezwa nje kuphela ezinhlotsheni ze-deposition ezingathathi hlangothi kodwa futhi nakuma-ion anamandla. Uma kusetshenziswa i-substrate bias efanele, lawa ma-ion asheshiswa aye ebusweni be-substrate, adlulisele amandla efilimini ekhulayo.
Lokhu kufakwa kwamandla kuthinta ukuhamba kwama-athomu nama-ion abekwe phezu komhlaba. Amandla anele avumela ama-adatomu ukuthi anqobe izithiyo zokusabalalisa zendawo, athuthele ezindaweni ezinhle kakhulu, futhi agcwalise izikhala ezincane ngaphakathi kwefilimu ekhulayo. Ngenxa yalokho, ifilimu ingaguquka isuke esakhiweni esinezimbobo iye esakhiweni esincane esiminyene nesincane.
Ngakho-ke, ukuminyana kwamandla kufanele kubhekwe njengebhuloho elibalulekile phakathi kwamapharamitha enqubo ye-PVD kanye nesakhiwo sokugcina sefilimu.
2. Kungani Ukufakwa Kwamandla Kunquma Ubuningi Befilimu
Ngesikhathi sokuqala kokufakwa, ama-athomu noma ama-ion afika ku-substrate awakhi ngokushesha ungqimba oluqinile ngokuphelele. Ayahlangana ebusweni, afuduke, futhi kancane kancane akhe iziqhingi ezigcina zihlangana zibe ifilimu eqhubekayo.
Uma izinhlobo ezifikayo zingenawo amandla anele e-kinetic, ukuhamba kwazo ebusweni kuyalinganiselwa. Zingase zihlale ziseduze nezindawo zazo zokuqala zokufika, okuholela ekusabalaleni okungaphelele kobuso kanye nokwakheka kwezikhala ezincane kakhulu. Njengoba ukubekwa kwazo kuqhubeka, lezi zikhala zingakhula zibe yisakhiwo esincane esinamakholomu nesingenazo izimbobo.
Lesi simo sibaluleke kakhulu ezinqubweni zokubeka izinto ezisezingeni eliphansi lokushisa noma ezinhlelweni ezisebenza ngokuqhuma kwama-ion okunganele.
Uma amandla alethwa efilimini ekhulayo ekhuliswa aze afike ezingeni elifanele, ukusabalala kobuso kuba matasa kakhulu. Izinhlobo ezifakiwe zingahamba ngaphesheya kobuso futhi zithathe izikhundla zamandla aphansi, kuyilapho ukuqhuma kwama-ion kungakhuthaza ukuhlelwa kabusha kwama-athomu, ukunciphisa amaphutha, kanye nokuvalwa kwe-void. Ifilimu ephumelayo ngokuvamile ibonisa isimo esiqinile kanye nokubopha okuqinile kwe-interfacial.
Ngokombono wesakhiwo esincane, inhloso akuyona nje "ukwandisa amandla," kodwa ukusungula isilinganiso esifanele samandla-ukuya-ekuguqukeni ngesikhathi sokukhula kwefilimu.
3. Indima Yokubandlulula Okungaphansi Kwe-Substrate
Phakathi kwamapharamitha enqubo ye-PVD atholakalayo, i-substrate bias voltage ingenye yezindlela eziqondile kakhulu zokulawula amandla e-ion bombardment.
Ukusebenzisa i-negative bias ku-substrate kudala amandla kagesi asheshisa ama-ion ashajwe kahle ebusweni be-substrate. Ukwandisa ubukhulu be-bias ngokuvamile kwandisa amandla omthelela we-ion, okungathuthukisa ukusebenza komphezulu kanye nokuminyana kwefilimu.
Isibonelo, ekubekweni kwe-TiN, CrN, TiAlN, DLC, nezinye izembozo ezisebenzayo, isimo esifanele sokuthambekela singathuthukisa ukuqina kwefilimu, ubulukhuni, ukunamathela, kanye nokumelana nokuguguleka.
Kodwa-ke, ubudlelwano phakathi kwe-bias voltage kanye nekhwalithi yefilimu abuqondile. Uma amandla e-ion bombardment eba ngokweqile, kungase kube nemiphumela eminingana engathandeki, okuhlanganisa ukuphindaphinda, ukufakelwa, ukuqongelela kokucindezeleka okusele, ukushisa kwe-substrate, ukukhiqizwa kwesici, ngisho nomonakalo we-substrate.
Ukuqhuma kwama-ion amaningi kungasusa nama-athomu abekwe ngaphambili ebusweni befilimu, kunciphise izinga lokufakwa kwe-net futhi kungashintsha ukwakheka kwengubo.
Ngakho-ke, ukubandlulula kwe-substrate okufanele kufanele kunqunywe ngokuya ngezinto ze-substrate, uhlelo lokumboza, izinhlobo ze-ion, ukuminyana kwe-plasma, izinga lokufakwa, kanye nezakhiwo zefilimu ezidingekayo, kunokumane kulandelwe i-voltage ephezulu yokubandlulula.
4. I-Ion Flux kanye ne-Ion Energy Kumelwe Kucatshangelwe Ndawonye
Ukuqina kwefilimu kulawulwa amandla angaphezu kwama-ion kuphela. Ukugeleza kwama-ion, okusho inani lama-ion afinyelela ku-substrate ngeyunithi ngayinye nendawo nesikhathi, kubaluleke ngokulinganayo.
Ukuphuma kwe-ion enamandla aphezulu kungashintsha kakhulu ifilimu ekhulayo, kodwa uma ukuphuma kwe-ion kuphansi kakhulu, amandla aphelele adluliselwe kufilimu angase ahlale enganele. Ngokuphambene nalokho, ukuphuma kwe-ion ephezulu kakhulu ngamandla amaningi kungabangela ukuqhuma okukhulu kanye nokuphikisana okungafuneki noma umthwalo wokushisa.
Ngenxa yalesi sizathu, ukuthuthukiswa kwenqubo ye-PVD ethuthukisiwe kugxila kakhulu ekulawuleni ubudlelwano obuhlangene phakathi kwamandla e-ion kanye nokushintshashintsha kwe-ion, kunokuphatha ukuthambekela kwe-substrate njengepharamitha ehlukanisiwe.
Lobu budlelwano bubaluleke kakhulu ezinqubweni zokufakwa kwe-ionized kakhulu njenge-cathodic arc PVD kanye ne-high-power impulse magnetron sputtering (HiPIMS). Ngokwandisa ingxenye ye-ionization yezinhlobo zokufakwa kwe-deposition, lobu buchwepheshe buhlinzeka ngokuguquguquka okukhulu ekulawuleni amandla alethwa kwifilimu ekhulayo.
5. Ubuningi Bamandla Nokuguquka Kwesakhiwo Esincane
Ithonya lobuningi bamandla lingaqondwa nangokuvela kwesakhiwo esincane sefilimu.
Ngaphansi kwezimo zokubeka amandla aphansi, ukuhamba okulinganiselwe kobuso kungaholela ekukhuleni okungenalutho noma okunezinsika, ikakhulukazi lapho izinga lokushisa le-substrate liphansi futhi izinhlobo ezigciniwe zingenakho ukuhamba okwanele.
Njengoba ukufaka amandla kukhuphuka ngaphakathi kwefasitela lenqubo efanele, ukusabalala kobuso kuba ngcono kakhulu futhi isakhiwo esincane kancane kancane siba sincane kakhulu. Imingcele yokusanhlamvu kanye nezikhala eziphakathi kwamakholomu kungancishiswa, kuyilapho ukugqoka kuba okuqhubekayo futhi okuzinzile ngokwemishini.
Nokho, ngokwanda okwengeziwe kobuningi bamandla, inqubo ingangena ohlelweni olubuswa ukuqhuma kwama-ion aqinile. Ukuphendula kanye nokuphuma kwe-athomu kuba yinto ebaluleke kakhulu, okungenzeka kukhiqize ukucindezeleka okuphezulu okuncishisiwe. Nakuba uqweqwe lungahlala luqinile, ukucindezeleka kwangaphakathi okweqile kunganciphisa ukunamathela futhi kuholele ekuqhekekeni noma ekuqhekekeni.
Ngenxa yalokho, ngokuvamile kuba nefasitela elingcono kakhulu lobuningi bamandla kunokuba kube nobudlelwano obulula lapho amandla aphezulu ehlala ekhiqiza amafilimu angcono.
6. Ubuningi Bamandla kanye Nomphumela “Wokubhoboza I-Atomic”
Enye yezindlela ezibalulekile ezihlotshaniswa nokuqhuma kwama-ion anamandla umphumela wokuphuma kwe-athomu.
Ngesikhathi sokuqhuma kwama-ion anamandla, ama-ion angenayo adlulisela umfutho kuma-athomu angaphezulu, okubangela ukufuduka kwama-athomu endaweni ethile kanye nokuhlela kabusha. Lokhu kungaphoqa ama-athomu ukuthi ahleleke kahle futhi kucindezele ukuthuthukiswa kwevolumu evulekile ngaphakathi kwefilimu ekhulayo.
Umphumela ungaba isakhiwo esincane esiminyene esinobulukhuni obuthuthukisiwe kanye nokuzinza kwemishini.
Le ndlela yokusebenza ibaluleke kakhulu ekumbozweni kwe-PVD eqinile. Ezinhlelweni ezifana ne-TiN, CrN, TiCN, AlTiN, kanye nokumbozwa kwe-nitride okuhlobene, ukuqhuma kwama-ion afanele kungasiza ekuxineni okuphezulu kwefilimu kanye nokusebenza okuthuthukisiwe kwemishini.
Kodwa-ke, ukubhoboza ngokweqile kwe-athomu kungadala ukucindezeleka okukhulu okusele kokucindezela. Ngakho-ke, ukugqoka okunobuningi obukhulu kakhulu akuyona ngempela ingubo efanele uma ukucindezeleka kwangaphakathi kudlula ikhono lokunamathela kwe-substrate/coating interface.
Inhloso ewusizo ukufeza ibhalansi phakathi kobuningi befilimu, ukucindezeleka okusele, ukunamathela, ubulukhuni, kanye nezinga lokufakwa.
7. Izinga Lokufaka Imali Liphinde Lishintshe Ibhalansi Yamandla
Ubuningi bamandla abukwazi ukuhlolwa ngaphandle kwesilinganiso sokufakwa.
Uma izinga lokufakwa kwe-ion likhuphuka kakhulu ngenkathi izimo zokufakwa kwe-ion zingashintshi, isilinganiso sokufakwa kwe-ion enamandla ku-incoming deposition flux singase sehle. Ngamanye amazwi, izinto eziningi zifakwa ngaphandle kokwanda okulinganayo kwamandla atholakalayo ukukhuthaza ukusabalala kwendawo kanye nokuhlelwa kabusha kwesakhiwo.
Lokhu kungabangela ukushintshela esakhiweni esincane kakhulu.
Ngakolunye uhlangothi, ukugcina isilinganiso esifanele se-ion-to-neutral flux kungasiza ekulungiseni izinguquko zesilinganiso sokufakwa kwefilimu nokugcina isakhiwo sefilimu esihambisanayo.
Yingakho ukuthuthukiswa kwenqubo ye-PVD yezimboni kufanele kuqaphele kakhulu hhayi nje amandla kanye nesilinganiso sokufakwa, kodwa futhi nobudlelwano phakathi kobuningi bamanje be-ion, amandla e-ion, ukuhamba kokufakwa, kanye nobandlululo lwe-substrate.
8. Ukushisa kwe-Substrate kanye ne-Ion Bombardment Kusebenza Ndawonye
Ukushisa kwe-substrate kungenye into ebalulekile ethonya ukuqina kwefilimu.
Amandla okushisa ahlinzeka ngama-athomu agciniwe ngokuhamba, kuyilapho ukuqhunyiswa kwama-ion kunikeza amandla engeziwe e-kinetic. Zombili izindlela zingakhuthaza ukusabalala kwendawo kanye nokuhlelwa kabusha kwesakhiwo.
Kuma-substrate azwela izinga lokushisa njengepulasitiki yobunjiniyela, izingxenye ze-optical, kanye nezinto ezithile ze-elekthronikhi, ukwandisa izinga lokushisa le-substrate kungase kungenzeki. Kulezi zimo, ukuqhuma kwama-ion okulawulwayo kuba yigugu kakhulu ngoba kunganikeza amandla engeziwe kwifilimu ekhulayo ngaphandle kokuthembela kuphela ekushiseni okushisayo.
Lokhu kungenye yezinzuzo ezibalulekile zezinqubo ze-PVD ezisizwa yi-ion: ukuqina kwefilimu kungathuthukiswa ngokusebenzisa ukuqhunyiswa kwezinhlayiya ezinamandla ngenkathi kugcinwa amazinga okushisa aphansi kakhulu e-substrate.
Noma kunjalo, ukuqhuma kwama-ion ngokwako kudala ukushisa. Ngakho-ke, izinga lokushisa le-substrate kufanele liqashwe kuyo yonke inqubo yokubeka ukuze kuvinjelwe ukuguquguquka kokushisa noma ukuwohloka kwezinto ezithinta izinga lokushisa.
9. Ubuningi Bamandla Kufanele Buqondaniswe Nesistimu Yokumboza
Izinto zokumboza ezahlukene zinezidingo ezahlukene zokuqhuma kwama-ion kanye nokufakwa kwamandla.
Kwezembozo ze-nitride eqinile, i-ion bombardment enamandla kakhulu ivame ukuba wusizo ekutholeni ukuminyana okuphezulu, ubulukhuni obuphezulu, kanye nokunamathela okuqinile. Kwezembozo ze-optical, i-bombardment eningi ingase ifake ukucindezeleka noma ishintshe ukufana kwe-refractive-index. Kwezembozo zensimbi zokuhlobisa, amandla e-ion amaningi angathinta ukuma kwendawo, ukukhanya, umbala, kanye nokucindezeleka okusele.
I-DLC kanye nezinye izembozo ezisekelwe ku-carbon zizwela kakhulu ebhalansini phakathi kwamandla e-ion kanye nezimo zokubekwa ngoba amandla e-ion angathinta ukucushwa kwesibopho ngakho-ke isilinganiso phakathi kwesibopho se-sp² kanye ne-sp³.
Ngakho-ke, akukho "ubuningi bamandla obufanele" obusebenza kuyo yonke i-PVD coating. Iwindi lenqubo elifanele kumele lisungulwe ngokuya ngohlelo lwezinto ezibonakalayo, i-substrate, ukujiya kwefilimu, izinga lokufakwa, izakhiwo zemishini ezidingekayo, izidingo zokukhanya, kanye nemikhawulo yokushisa.
10. Kusukela kumapharamitha enqubo kuya ekusebenzeni kwefilimu
Ekukhiqizweni kwe-PVD yezimboni, ubuningi bamandla kufanele buhlolwe ekugcineni ngezakhiwo zefilimu ezilinganiswayo kunokuba kuhlolwe ngemingcele yenqubo kuphela.
Uhlelo lokufaka amandla oluhlelwe kahle kufanele lufake isandla ekuthuthukisweni kobuningi befilimu, ubulukhuni, ukunamathela, ukumelana nokuguguleka, ukumelana nokugqwala, ukuzinza kokukhanya, kanye nokusebenza kwezithiyo, kuye ngokuthi kusetshenzisweni.
Izindlela zokuhlukanisa izinkomba ezifana ne-SEM enqamula isigaba, i-XRD, i-nanoindentation, ukuhlolwa kokuklwebheka, ukulinganisa ukucindezeleka okusele, ukuhlaziywa kobulukhuni bomphezulu, kanye nokumapha kobukhulu befilimu kungasetshenziswa ukusungula ubudlelwano phakathi kwamapharamitha enqubo kanye nokusebenza kokumboza.
Lokhu kuvumela inqubo ye-PVD ukuthi isuke ekulungisweni okulula kwamapharamitha iye efasiteleni lenqubo elihlelekile kanye nesu lokulawula isakhiwo esincane.
Isiphetho
Ku-PVD, ubuningi bamandla bungenye yezici eziyisisekelo ezilawula ukuguquka kusuka ezakhiweni zokubeka eziqinile kuya kumafilimu aqinile futhi azinzile. Amandla e-ion afanele kanye nokujikeleza kwe-ion kungathuthukisa ukusabalala kobuso, kukhuthaze ukuhlelwa kabusha kwe-athomu, kunciphise ukwakheka kwe-void, futhi kuthuthukise ukuqina kwefilimu.
Kodwa-ke, amandla aphezulu akusho ngokuzenzakalelayo ukusebenza okungcono kokumboza. Ukuqhuma kwama-ion amaningi kungabangela ukuphindaphindeka, ukushisa kwe-substrate, ukucindezeleka okuphezulu okusele, kanye nomonakalo we-interface. Isihluthulelo ukusungula ibhalansi elungiselelwe phakathi kwamandla ama-ion, i-ion flux, izinga lokufakwa, i-substrate bias, i-plasma density, kanye nokushisa kwe-substrate.
Ngakho-ke, ngemishini yesimanje ye-PVD, ikhono lokulawula ukufakwa kwamandla akuyona nje indlela yokwandisa ukusebenza kahle kokufakwa—liyikhono eliyisisekelo lobunjiniyela besakhiwo sefilimu kanye nokufeza ukusebenza okuzinzile nokuphindaphindekayo kokumboza.
-Lesi sihloko sishicilelwe nguumenzi wemishini yokumboza nge-vacuum I-Zhenhua Vacuum
Isikhathi sokuthunyelwe: Agasti-04-2026