Ngesikhathi se-evaporation coating, i-nucleation kanye nokukhula kongqimba lwefilimu kuyisisekelo sobuchwepheshe obuhlukahlukene be-ion coating
1.I-nucleation
Inubuchwepheshe be-vacuum evaporation coating, ngemva kokuba izinhlayiya zesendlalelo sefilimu zihwamukile emthonjeni wokuhwamuka ngendlela yama-athomu, zindiza ngqo endaweni yokusebenza nge-vacuum ephezulu futhi zakha ungqimba lwefilimu nge-nucleation nokukhula ebusweni bomsebenzi.Ngesikhathi sokuhwamuka kwe-vacuum, amandla ama-athomu ongqimba lwefilimu aphuma emthonjeni wokuhwamuka angaba ngu-0.2eV.Lapho ukuhlangana phakathi kwezinhlayiya zesendlalelo sefilimu kukhulu kunamandla okubopha phakathi kwama-athomu ongqimba lwefilimu nomsebenzi, yakha i-nucleus yesiqhingi.I-athomu eyodwa yongqimba lwefilimu ihlala phezu kwendawo yokusebenza isikhathi eside yenza ukunyakaza okungajwayelekile, ukuhlakazeka, ukufuduka, noma ukungqubuzana namanye ama-athomu ukuze kwakhe amaqoqo e-athomu Inani lama-athomu kuqoqo le-athomu lifinyelela inani elithile elibalulekile, isitebele. i-nucleus yakhiwe, ebizwa ngokuthi i-nucleus emise okwe-homogeneous.
bushelelezi, futhi iqukethe iziphambeko eziningi nezinyathelo, ezidala umehluko kumandla okukhangisa wezingxenye ezihlukene zocezu lokusebenza kuma-athomu akhipha imisebe.Amandla e-adsorption ebusweni besici makhulu kunendawo evamile, ngakho-ke iba isikhungo esisebenzayo, esivumelana ne-nucleation ethandwayo, ebizwa ngokuthi i-heterogeneous nucleation.Lapho amandla okuhlangana elingana namandla okubopha, noma amandla okubopha phakathi kwama-athomu ulwelwesi kanye nomsebenzi mkhulu kunamandla okuhlangana phakathi kwama-athomu olwelwesi, kwakheka isakhiwo se-lamellar.Kubuchwepheshe be-ion plating, i-island core yakhiwa ezimweni eziningi.
2.Ukukhula
Uma umnyombo wefilimu sewakhiwe, uyaqhubeka nokukhula ngokubamba ama-athomu esigameko.Iziqhingi ziyakhula futhi zihlangane ndawonye ukuze zakhe ama-hemispheres amakhulu, kancane kancane zakha ungqimba lwesiqhingi oluyi-hemispherical olusakazeka phezu kwendawo yokusebenza.
Uma amandla e-athomu engqimba yefilimu ephakeme, angasakazeka ngokwanele ebusweni futhi ifilimu eqhubekayo ebushelelezi ingase yakheke lapho amaqoqo e-athomu angenayo alandelayo emancane. amaqoqo afakiwe makhulu, akhona njengama-nuclei amakhulu e-peninsular.Isiqongo se-island core sinomthelela onamandla womthunzi engxenyeni ye-concave, lokho "umphumela wethunzi". kanye nokukhula okukhethekile, okuholela ekukhuleni kwezinga le-concavity ebusweni ukuze kwakhiwe amakristalu e-conical noma amakholomu osayizi owanele.Ama-voids angena ngaphakathi akhiwa phakathi kwamakristalu ayi-conical kanye nenani lokuma okungaphezulu liyakhuphuka.Izicubu ezinhle zingatholakala endaweni ye-vacuum ephezulu, ngokuncipha kwe-vacuum degree, i-microstructure ye-membrane iba mkhulu futhi ibe mkhulu.
Isikhathi sokuthumela: May-24-2023