Mu gusiga umwuka ushyushye (PVD), ubucucike bwa filime ni kimwe mu bimenyetso by'ingenzi bigaragaza imikorere ya mekanike, iy'urumuri, iy'amashanyarazi, n'iy'uburinzi bw'ingufu z'igipfundikizo. Ku bipfundikizo bikomeye, filime zo gushushanya, iy'urumuri, n'iy'uburinzi bw'ingufu, imiterere mito y'igipfundikizo muri rusange ifitanye isano no gufatana neza, gukomera cyane, kugabanuka kw'imyenge, no kunoza ubudahangarwa bw'ingufu no kwangirika kw'ibidukikije.
Ariko, kwiyongera kw'ingufu za firime ntiguterwa gusa no kongera imbaraga zo gushyiramo cyangwa umuvuduko wo gushyiramo. Mu by'ingenzi, bifitanye isano ya hafi n'ubucucike bw'ingufu zitangwa kuri firime ikura, ari na byo bigenga kugenda kw'ubuso, gukwirakwira kwa adatome, imyitwarire y'uturemangingo, gukura kw'ibinyampeke, n'ihindagurika ry'ubusembwa mu gihe cyo gushyiramo.
Gusobanukirwa isano iri hagati y’ingufu zinjira, ikoreshwa rya ion, ubushyuhe bwa substrate, n’imiterere mito ya firime ni ingenzi cyane mu kunoza imikorere ya PVD.
1. Ubucucike bw'ingufu muri PVD ni iki?
Muri PVD, ijambo ubucucike bw'ingufu muri rusange risobanura ingano y'ingufu zitangwa ku gice cyangwa ku gice gikura kuri buri gice kandi mu gihe runaka cy'igikorwa. Mu buryo bw'imikorere, bifitanye isano ya hafi n'ibipimo nka ingufu za iyoni, flux ya iyoni, bias ya substrate, ubucucike bwa plasma, imbaraga zo gusohora, igipimo cyo gushyiramo, n'ubushyuhe bwa substrate.
Ku bijyanye n'imikorere ya PVD ya ionized, cyane cyane iyo cathodic arc deposition na magnetron sputtering ifite imbaraga nyinshi, iyo filime ikura ntabwo igaragara gusa ku bwoko bwa neutral deposition ahubwo igaragara no kuri iyoni zifite imbaraga. Iyo hakoreshejwe substrate bias ikwiye, izi iyoni zihuta zigera ku buso bwa substrate, zigashyira ingufu kuri iyo filime ikura.
Iyi ngufu igira ingaruka ku ihinduka rya atome na iyoni ziri ku buso. Ingufu zihagije zemerera adatome gutsinda inzitizi zo gukwirakwira mu gace, zigafata imyanya myiza, kandi zigashyiramo icyuho gito kiri muri firime iri gukura. Kubera iyo mpamvu, firime ishobora kuva ku nyubako ifite imyenge ijya ku nyubako ntoya kandi ikomeye.
Bityo rero, ubucucike bw'ingufu bukwiye gufatwa nk'ikiraro cy'ingenzi hagati y'ibipimo by'imikorere ya PVD n'imiterere ya nyuma ya filime.
2. Impamvu ingufu zikoreshwa zigena ubucucike bwa firime
Mu cyiciro cya mbere cyo gushyiramo ibintu, atome cyangwa iyoni zigera kuri substrate ntizihita zigira urwego ruto rwose. Ziratera hejuru, zikimuka, hanyuma buhoro buhoro zigakora ibirwa amaherezo bihurira hamwe bikaba filime ikomeza.
Iyo ubwoko bw'ibinyabuzima bugeze aho budafite ingufu zihagije zo gukora ibintu, kugenda kw'ubuso bwabyo kuba guke. Bishobora kuguma hafi y'aho byatangiriye kugwa, bigatuma ubuso bukwirakwira neza ndetse hakavuka n'icyuho gito. Uko ibintu bikomeza kwiyongera, ibyo bicyuho bishobora guhinduka imiterere mito kandi ifite imyenge.
Iki kintu ni ingenzi cyane mu mikorere yo gushyiramo ibintu mu bushyuhe buke cyangwa mu buryo bukora neza hatabayeho guteramo ioni nke.
Iyo ingufu zitangwa kuri firime ikura zongerewe ku rwego rukwiye, gukwirakwira k'ubuso birakora cyane. Ubwoko bw'ibinyabuzima byashyizwemo bushobora kwimuka bukajya mu buso bukajya mu myanya y'ingufu nke, mu gihe ikwirakwizwa rya ion rishobora gutuma atome isubiranamo, kugabanya inenge no gufunga ubusa. Filime ivamo muri rusange igaragaza imiterere ikomeye kandi ikomeye yo guhuza imiterere y'urusobe rw'ibintu.
Mu buryo bw’imiterere y’ingufu, intego si "kongera ingufu" gusa, ahubwo ni ugushyiraho igipimo gikwiye cy’ingufu hagati y’ingufu n’ihindagurika mu gihe cyo gukura kwa firime.
3. Uruhare rw'Ubusumbane mu Bice Bitandukanye
Mu bipimo bya PVD biboneka, voltage ya substrate bias ni bumwe mu buryo butaziguye bwo kugenzura ingufu za ion bombardment.
Gushyiramo imiterere mibi kuri substrate bitanga amashanyarazi yihutisha iyoni zishyushye neza zigana ku buso bwa substrate. Kongera ingano ya imiterere muri rusange byongera ingufu za iyoni, bishobora kongera imikorere y'ubuso no kwiyongera kwa firime.
Urugero, mu gushyira TiN, CrN, TiAlN, DLC, n'izindi myenda ikora, uburyo bukwiye bwo kugabanya ubwinshi bw'urumuri, gukomera, gufatana, no kudashira.
Ariko, isano iri hagati y’imbaraga za bias voltage n’ubwiza bwa filime ntabwo ari umurongo ugororotse. Iyo ingufu za ion bombardment zibaye nyinshi, ingaruka nyinshi mbi zishobora kubaho, harimo gusubiza inyuma, gutera, gukusanya ibintu bisigaye, gushyushya substrate, gukora inenge, ndetse no kwangirika kwa substrate.
Gutera cyane iyoni bishobora kandi gukuraho atome zari zarabitswe mbere ku buso bwa firime, bikagabanya igipimo cyo gushyiramo irangi no guhindura imiterere y'igitambaro.
Kubwibyo, uburyo bwiza bwo gutandukanya ibintu mu buryo bwa substrate bugomba kugenwa hakurikijwe ibikoresho bya substrate, uburyo bwo gusiga, ubwoko bwa iyoni, ubucucike bwa plasma, igipimo cyo gushyiramo ibintu, n'imiterere ya filime ikenewe, aho gukurikirana gusa ingufu nyinshi zo gutandukanya ibintu.
4. Ion Flux n'Ingufu za Ion bigomba gusuzumwa hamwe
Ubucucike bwa firime bugenzurwa n’ingufu za ion zirenze izo gusa. Ion flux, bivuze umubare wa ion zigera kuri substrate kuri buri gice cy’ubutaka n’igihe, ni ingenzi cyane.
Ingufu nyinshi za iyoni zishobora guhindura cyane firime ikura, ariko iyo ingufu za iyoni ziri hasi cyane, ingufu zose zijya muri iyo firime zishobora kuguma zidahagije. Ku rundi ruhande, ingufu nyinshi za iyoni ku ngufu zirenze urugero zishobora gutera ibisasu bikomeye no gukurura abantu batifuza cyangwa ubushyuhe bwinshi.
Kubera iyo mpamvu, iterambere ry’imikorere ya PVD rikomeje kwibanda ku kugenzura isano iri hagati y’ingufu za iyoni n’ihindagurika rya iyoni, aho gufata uruhande rw’inyuma nk’ikintu cyihariye.
Iyi sano ni ingenzi cyane mu mikorere yo gushyiramo ioni nyinshi nka cathodic arc PVD na high-power impulse magnetron sputtering (HiPIMS). Mu kongera igice cya ionization cy'ubwoko bwo gushyiramo ioni, ubu buryo butanga uburyo bworoshye bwo kugenzura ingufu zitangwa kuri filime ikura.
5. Ubucucike bw'ingufu n'iterambere ry'imiterere
Ingaruka z'ubucucike bw'ingufu zishobora kandi kumvikana binyuze mu iterambere ry'imiterere mito ya filime.
Mu gihe cy’ingufu nke ziterwa n’amazi, kugenda ku butaka kuke bishobora gutuma habaho gukura kw’amazi cyangwa inkingi, cyane cyane iyo ubushyuhe bw’ubutaka buri hasi kandi ubwoko bw’ibinyabuzima byakuwemo budafite ubushobozi bwo kugenda neza.
Uko ingufu ziyongera mu gihe cy’ibikorwa bikwiye, gukwirakwira kw’ubuso birarushaho kugira akamaro kandi imiterere y’ibice igenda iba nto buhoro buhoro. Imbibi z’ibinyampeke n’imyanda hagati y’inkingi bishobora kugabanuka, mu gihe igitambaro gikomeza kandi kigakomera mu buryo buhamye.
Ariko, uko ingufu nyinshi ziyongera, inzira ishobora kwinjira mu buryo bwiganjemo ikwirakwizwa rikomeye rya iyoni. Guterana no gusohora atome bigenda birushaho kuba ingenzi, bishobora gutera stress nyinshi isigaye. Nubwo irangi rishobora kuguma riri rinini, stress nyinshi imbere ishobora kugabanya gufatana no gutera gucika cyangwa gutandukana.
Kubera iyo mpamvu, ubusanzwe habaho urwego rwiza rw’ubucucike bw’ingufu aho kuba isano yoroshye aho ingufu nyinshi zihora zitanga filime nziza.
6. Ubucucike bw'ingufu n'ingaruka za "Atomic Peening"
Imwe mu mikorere y'ingenzi ijyanye no gutera ingufu kwa iyoni ni ingaruka zo gusohora atome.
Mu gihe cyo gutera imbunda zikoresha ingufu, imbunda zinjira zishyira imbaraga mu atome zo hejuru, bigatuma atome zigenda zihinduka ndetse zigahinduka bundi bushya. Ibi bishobora gutuma atome zijya mu buryo bufatanye cyane no guhagarika iterambere ry’ubwinshi bw’ibintu muri filime ikura.
Ibisubizo bishobora kuba imiterere mito y’icyuma ifite ubukana burushijeho kwiyongera hamwe n’ubudahangarwa bw’imashini.
Ubu buryo bufite akamaro cyane cyane ku bikoresho bikomeye bya PVD. Ku bikoresho nka TiN, CrN, TiCN, AlTiN, n'ibindi bikoresho bifitanye isano na nitride, gukoresha ioni neza bishobora gutuma filime y'ubucucike bwinshi no kunoza imikorere ya mekanike.
Ariko, gusohora cyane atome bishobora gutera stress ikomeye yo gukanda. Kubwibyo, gutwikira bifite ubucucike bwinshi cyane si ngombwa ko biba ari byo byiza cyane iyo stress y'imbere irenze ubushobozi bwo gufatana bw'aho substrate/coating interface.
Intego ifatika ni ukugira ngo habeho uburinganire hagati y’ubucucike bwa firime, stress isigaye, gufatana, gukomera, n’umuvuduko wo gushyiramo firime.
7. Igipimo cyo Gutanga Ingufu Nacyo Gihindura Ingano y'Ingufu
Ubucucike bw'ingufu ntibushobora gupimwa hatitawe ku gipimo cyo kuzigama.
Iyo igipimo cyo gushyiramo ion kiyongera cyane mu gihe imiterere y’ibitero bya ion idahinduka, igipimo cy’ibitero bya ion bitanga ingufu ugereranyije n’ibitero bitanga ingufu gishobora kugabanuka. Mu yandi magambo, ibikoresho byinshi biri gushyirwamo nta kwiyongera kw’ingufu zihari kugira ngo biteze imbere gukwirakwira kw’ubuso no kuvugurura imiterere.
Ibi bishobora gutuma habaho impinduka mu miterere mito idafite ubucucike bwinshi.
Ku rundi ruhande, kugumana igipimo gikwiye cy’ingufu hagati ya iyoni na neutral bishobora gufasha kwishyura impinduka mu gipimo cyo gushyiramo no kugumana imiterere ihamye ya filime.
Niyo mpamvu iterambere ry’inganda za PVD rikwiye kwita cyane ku ngufu n’umuvuduko w’ingufu gusa, ahubwo no ku isano iri hagati y’ubucucike bw’umuyoboro wa ion, ingufu za ion, flux y’ingufu, n’uburyo substrate bias.
8. Ubushyuhe bwo mu butaka n'ibisasu bya Ion birakorana
Ubushyuhe bw'ubutaka ni ikindi kintu gikomeye bigira ingaruka ku kwiyongera kwa firime.
Ingufu z'ubushyuhe zituma atome zibikwa zigenda, mu gihe imbunda za ion zitanga ingufu z'inyongera za kinetike. Uburyo bwombi bushobora gutuma ubuso bukwirakwira no gushya mu buryo bushya.
Ku bintu bishobora kwitabwaho n’ubushyuhe nka pulasitiki y’ubuhanga, ibice by’ikoranabuhanga, n’ibikoresho bimwe na bimwe by’ikoranabuhanga, kongera ubushyuhe bishobora kudashoboka. Muri ibi bihe, ikoreshwa rya ion rigenzurwa riba ingirakamaro cyane kuko rishobora gutanga ingufu z’inyongera kuri filime ikura hatishingiwe gusa ku bushyuhe bukabije.
Iyi ni imwe mu nyungu z'ingenzi zo gukoresha PVD ifashijwe na iyoni: kwiyongera kw'urusobe rw'amafilimi bishobora kongerwa binyuze mu gutera uduce tw'ingufu mu gihe ubushyuhe bwa substrate bugumana buri hasi.
Nubwo bimeze bityo, ikwirakwizwa ry’iyoni ubwaryo ritanga ubushyuhe. Kubwibyo, ubushyuhe bwa substrate bugomba gukurikiranwa mu gihe cyose cyo gushyiramo kugira ngo hirindwe ko ubushyuhe bwahinduka cyangwa kwangirika kw'ibikoresho bidashobora kwangirika.
9. Ubucucike bw'ingufu bugomba guhuzwa n'uburyo bwo gusiga
Ibikoresho bitandukanye byo gusiga bifite ibisabwa bitandukanye mu gutemba iron no gushyiramo ingufu.
Ku bijyanye n'imyambaro ikomeye ya nitride, ikoreshwa ry'iyoni rikoresha ingufu nyinshi rikunze kuba ingirakamaro mu kubona ubucucike bwinshi, gukomera cyane, no gufatana neza. Ku bijyanye n'ikoreshwa ry'amatara, ikoreshwa ry'iyoni rikoresha imbaraga nyinshi rishobora guteza stress cyangwa guhindura refractive-index sympathize. Ku bijyanye n'ikoreshwa ry'ibyuma, ingufu nyinshi za iyoni zishobora kugira ingaruka ku miterere y'ubuso, ubwiza, ibara, n'ingufu zisigaye.
DLC n'izindi coatings zishingiye kuri karuboni zirushaho kugira ingaruka ku buringanire buri hagati y'ingufu za iyoni n'imiterere y'aho zishyirwa kuko ingufu za iyoni zishobora kugira ingaruka ku miterere y'aho zihurira, bityo bikaba byagira ingaruka ku kigereranyo kiri hagati ya sp² na sp³ bonding.
Bityo rero, nta "bucucike bw'ingufu bukwiye" bukoreshwa kuri buri mwambaro wa PVD. Idirishya rikwiye ryo gutunganya rigomba gushyirwaho hakurikijwe sisitemu y'ibikoresho, substrate, ubugari bwa firime, igipimo cyo gushyiramo, imiterere ikenewe ya mekanike, ibisabwa mu mucyo, n'aho ubushyuhe budahagije.
10. Kuva ku bipimo by'imikorere kugeza ku mikorere ya filime
Mu ikorwa rya PVD mu nganda, ubucucike bw'ingufu bugomba gusuzumwa binyuze mu miterere ya firime ipimwa aho gukoresha ibipimo by'imikorere gusa.
Uburyo bwo gushyiramo ingufu neza bukwiye kugira uruhare mu kunoza ubucucike bwa firime, ubukomere, gufatana, kudashira, kudashonga, kudahinduka kw'urumuri, kudahinduka kw'urumuri, ndetse no gukora neza kw'inzitizi, bitewe n'uko ikoreshwa.
Uburyo bwo gusesengura ibimenyetso nka SEM, XRD, nanoindentation, gupima gushinyagura, gupima imihangayiko isigaye, gusesengura ubukana bw'ubuso, no gupima ubunini bwa filime bishobora gukoreshwa mu kugaragaza isano iri hagati y'ibipimo by'imikorere n'imikorere yo gusiga.
Ibi bituma inzira ya PVD iva ku guhindura ibipimo byoroshye ikajya ku idirishya ry’imikorere rihamye ndetse n’ingamba zo kugenzura imiterere mito.
Umwanzuro
Muri PVD, ubucucike bw'ingufu ni kimwe mu bintu by'ingenzi bigenga ihinduka kuva ku nyubako zifunguye zidafite aho zihuriye n'ibintu binini kandi bihamye mu buryo bwa mekanike. Ingufu za iyoni zikwiye n'ihindagurika rya iyoni bishobora kongera ikwirakwira ry'ubuso, guteza imbere ivugurura rya atome, kugabanya ikorwa ry'ubusa, no kunoza ubucucike bwa firime.
Ariko, ingufu nyinshi ntizisobanura ko irangi rikora neza mu buryo bwikora. Gutera irangi ryinshi rya ion bishobora gutera guhindagurika kw'amazi, gushyuha kwa substrate, gukanda cyane, no kwangirika kw'interface. Icy'ingenzi ni ugushyiraho uburyo bwiza bwo kuringaniza ingufu za ion, flux ya ion, umuvuduko wo gushyiramo, bias ya substrate, ubucucike bwa plasma, n'ubushyuhe bwa substrate.
Ku bikoresho bya PVD bigezweho, ubushobozi bwo kugenzura ingufu zinjira si uburyo bwo kongera ubushobozi bwo gushyiramo gusa—ni ubushobozi bw'ibanze bwo gukora imiterere mito ya firime no kugera ku musaruro uhamye kandi ushobora kongera gukoreshwa.
-Iyi nkuru yasohotse nauruganda rukora ibikoresho byo gusiga irangi ry'umwuka Zhenhua Vacuum
Igihe cyo kohereza: Kanama-04-2026