Lamulo la kukula kwa vacuum evaporation ❖ kuyanika filimu wosanjikiza

Pa ❖ kuyanika evaporation, nucleation ndi kukula kwa filimu wosanjikiza ndi maziko a zosiyanasiyana ion ❖ kuyanika luso

1.Manyukiliya

Inteknoloji yopaka vacuum evaporation, pambuyo filimu wosanjikiza particles ndi chamunthuyo ku gwero evaporation mu mawonekedwe a maatomu, iwo amawulukira mwachindunji workpiece mu zingalowe mkulu ndi kupanga filimu wosanjikiza ndi nucleation ndi kukula pamwamba pa workpiece.Panthawi ya vacuum evaporation, mphamvu ya maatomu osanjikiza filimu omwe amatuluka kuchokera ku nthunzi ndi pafupifupi 0.2eV.Pamene mgwirizano pakati pa tinthu tating'onoting'ono ta filimuyi ndi wamkulu kuposa mphamvu yolumikizana pakati pa ma atomu a filimuyo ndi chogwirira ntchito, pangani phata la chilumba.Atomu imodzi yosanjikiza filimu imakhala pamwamba pa chogwirirapo ntchito kwa nthawi yayitali ikugwira ntchito mosagwirizana, kufalikira, kusamuka, kapena kugundana ndi maatomu ena kupanga magulu a atomiki phata limapangidwa, lotchedwa phata looneka ngati lofanana.

yosalala, ndipo imakhala ndi zolakwika zambiri ndi masitepe, zomwe zimapangitsa kusiyana kwa mphamvu ya adsorption ya magawo osiyanasiyana a workpiece ku maatomu a radioactive.Mphamvu ya adsorption ya pamwamba pa chilema ndi yayikulu kuposa yanthawi zonse, chifukwa chake imakhala likulu logwira ntchito, lomwe limathandizira kuti pakhale nucleation yabwino, yotchedwa heterogeneous nucleation.Pamene mphamvu yogwirizana ndi yofanana ndi mphamvu yomangiriza, kapena mphamvu yomangiriza pakati pa ma atomu a nembanemba ndi workpiece ndi yaikulu kuposa mphamvu yogwirizanitsa pakati pa ma atomu a nembanemba, mapangidwe a lamellar amapangidwa.Muukadaulo wa ion plating, pachilumbachi nthawi zambiri amapangidwa.

2.Kukula

Pamene pachimake cha filimuyo chikapangidwa, chimapitiriza kukula mwa kutchera ma atomu a zochitikazo.Zilumbazi zimakula ndikuphatikizana kuti zipange ma hemispheres akuluakulu, pang'onopang'ono kupanga chilumba cha hemispherical chomwe chimafalikira pamwamba pa workpiece.

Pamene atomiki mphamvu ya filimu wosanjikiza ndi mkulu, akhoza diffuse mokwanira pamwamba ndi yosalala mosalekeza filimu akhoza kupangidwa pamene wotsatira ukubwera masango a atomiki ndi ang'onoang'ono. masango oyikidwa ndi aakulu, alipo ngati ma nuclei akuluakulu a peninsular. Pamwamba pa chilumbachi chimakhala ndi mthunzi wamphamvu pa gawo la concave, ndilo "mthunzi wa mthunzi" . ndi kukula kwapadera, zomwe zimapangitsa kuti pakhale kuchuluka kwa concavity pamtunda kuti apange makristasi a conical kapena columnar kukula kokwanira.Openya voids aumbike pakati makhiristo conical ndi pamwamba roughness mtengo increase.Fine minofu angapezeke pa zingalowe mkulu, ndi kuchepa kwa zingalowe digiri, ndi microstructure wa nembanemba amakhala thicker ndi wandiweyani.