Firimu layer mune evaporation sosi yekudziya evaporation inogona kuita membrane zvidimbu muchimiro chemaatomu (kana mamorekuru) munzvimbo yegasi chikamu. Pasi petembiricha yepamusoro yekubuda kwemvura, maatomu kana mamorekuru ari pamusoro pemembrane anowana simba rakakwana rekukunda kunetsa kwepasi uye kubuda kubva pamusoro. Aya maatomu evaporated kana mamorekuru aripo munzvimbo ine gasi muvacuum, kureva nzvimbo yegasi. simbi kana isiri-simbi zvinhu.
Munzvimbo yevacuum, kupisa uye evaporation maitiro e membrane zvinhu zvinogona kuvandudzwa. Iyo vacuum nharaunda inoderedza mhedzisiro yekumanikidza kwemuchadenga pane evaporation maitiro, zvichiita kuti evaporation process iite nyore kuita. Pakumanikidzwa kwemuchadenga, zvinhu zvinoda kuiswa pasi pekumanikidzwa kukuru kukunda kushorwa kwegasi, nepo muvacuum, kushorwa uku kunoderedzwa zvakanyanya, zvichiita kuti zvinhu zvive nyore kubuda. Mune evaporation coating process, tembiricha ye evaporation uye mhute yekumanikidza kwe evaporation source material chinhu chakakosha pakusarudza evaporation source material. Kune Cd (Se, s) coating, tembiricha yayo evaporation kazhinji iri mu1000 ~ 2000 ℃, saka unofanirwa kusarudza iyo evaporation sosi zvinhu zvine tembiricha yakakodzera evaporation. Senge aruminiyamu paatmospheric pressure evaporation tembiricha ye2400 ℃, asi mumamiriro evacuum, tembiricha yekubuda kwayo inodonha zvakanyanya. Izvi zvinodaro nekuti hapana mamorekuru emuchadenga mukuvharisa, kuitira kuti maatomu ealuminium kana mamorekuru anogona kunyungudika zviri nyore kubva pamusoro. Ichi chiitiko chakakosha mukana wevacuum evaporation coating. Mumhepo isina tsvina, kubuda kweiyo firimu zvinhu kunova nyore kuita, kuitira kuti mafirimu matete anogona kuumbwa pakudzika kwakadzika. Iyi tembiricha yakaderera inoderedza oxidization uye kuora kwezvinhu, nekudaro zvichibatsira mukugadzirira kwemafirimu emhando yepamusoro.
Munguva yevacuum coating, kudzvanywa uko hupfu hwezvinhu zvemufirimu hunoenzana mune yakasimba kana mvura inonzi saturation vapor pressure patembiricha iyoyo. Kudzvinyirirwa uku kunoratidza kuenzana kwehupfu nekunyunguduka patembiricha yakapihwa. Kazhinji, tembiricha mune dzimwe nzvimbo dzevacuum chamber yakadzikira zvakanyanya pane tembiricha yekubuda kwemhepo, izvo zvinoita kuti zvive nyore kuburitsa membrane maatomu kana mamorekuru kudzika mune dzimwe nzvimbo dzekamuri. Muchiitiko ichi, kana chiyero chekubuda kwemhepo chakakura kudarika chiyero che condensation, ipapo mu dynamic equilibrium iyo vapor pressure ichasvika pa saturation vapor pressure. Kureva kuti, pachiitiko ichi, nhamba yemaatomu kana mamorekuru ari kubuda ari evapote anoenzana nenhamba inokwidibira, uye dynamic equilibrium inosvika.
-Chinyorwa ichi chakaburitswa navacuum coating machine mugadziriGuangdong Zhenhua
Nguva yekutumira: Sep-27-2024