Lipatlisiso tsa morao-rao tsa Moprofesa oa Setsi sa Theknoloji sa Florida Martin Glicksman mabapi le litšepe le thepa li na le moelelo bakeng sa indasteri ea ho qala, empa hape e na le kamano e tebileng ea botho ho khothatso ea basebetsi-'moho le bona ba babeli ba shoeleng.googletag.cmd.push(mosebetsi() {googletag.display('div-gpt-ad-1449240174198-2′); });
Thuto ea Gliksman "Surface Laplacian of the interfacial thermochemical potential: karolo ea eona ho thehoeng ha puso ea mekhahlelo e tiileng le ea metsi" e hatisitsoe khatisong ea November ea koranta e kopanetsoeng Springer Nature Microgravity.Liphuputso li ka lebisa kutloisisong e betere ea ho tiea ha litšepe, ho lumella baenjiniere ho haha ​​​​enjine e tšoarellang nako e telele le lifofane tse matla, le ho ntšetsa pele tlhahiso ea tlatsetso.
"Ha u nahana ka tšepe, aluminium, koporo - lisebelisoa tsohle tsa bohlokoa tsa boenjiniere, ho lahla, ho cheselletsa le tlhahiso ea tšepe ea mantlha - tsena ke liindasteri tsa lidolara tse limilione tse likete tsa boleng bo botle ba sechaba," Glicksman o itse."U tla utloisisa hore re bua ka thepa, esita le lintlafatso tse nyane li ka ba bohlokoa."
Feela joalokaha metsi a etsa likristale ha a hoama, ho etsahala ntho e tšoanang ha metsoako ea tšepe e qhibilihisitsoeng e tiea ho etsa lintho tse entsoeng ka tšepe.Liphuputso tsa Gliksman li bontša hore nakong ea ho tiisa li-alloys tsa tšepe, tsitsipano e ka holim'a metsi pakeng tsa kristale le ho qhibiliha, hammoho le liphetoho ho pota-pota ha kristale ha e ntse e hōla, e baka mocheso oa mocheso esita le libakeng tse tsitsitseng.Qeto ena ea mantlha e fapane haholo le litekanyo tsa Stefan tse atisang ho sebelisoa khopolong ea ho lahla, moo matla a futhumatsang a hlahisoang ke kristale e ntseng e hola e lekana ka kotloloho le sekhahla sa kholo ea eona.
Gliksman o hlokometse hore ho kobeha ha kristale ho bonahatsa bokhoni ba eona ba lik'hemik'hale: kobeha e khobehla e theola hanyenyane ntlha ea ho qhibiliha, ha kobeho ea khoho e phahamisa hanyane.Sena se tsebahala haholo ho thermodynamics.Ntho e ncha le e seng e netefalitsoe ke hore curvature gradient ena e baka mocheso o eketsehileng oa mocheso nakong ea ho tiisa, e neng e sa nkoa e le khopolo ea setso ea ho lahla.Ho phaella moo, mocheso ona o phallang ke "deterministic" mme eseng ka tšohanyetso, joalo ka lerata le sa tloaelehang, leo ka molao-motheo le ka laoloang ka katleho nakong ea ho lahla ho fetola microstructure ea alloy le ho ntlafatsa thepa.
"Ha u e-na le li-microstructures tse thata tsa crystalline tse leqhoa, ho na le mocheso o bakoang ke curvature o ka laoloang," Gliksman o itse."Haeba li laoloa ke li-additives tsa lik'hemik'hale kapa liphello tsa 'mele tse kang khatello kapa matla a matla a khoheli, mocheso ona oa mocheso o ka har'a li-alloy castings o ka ntlafatsa microstructure' me qetellong o laola li-alloys, mehaho e tsoetsoeng, esita le thepa e hatisitsoeng ea 3D."
Ntle le boleng ba eona ba saense, thuto e ne e le ea bohlokoa haholo ho Glixman, ka lebaka la ts'ehetso e thusang ea mosebetsi-'moho le eena oa morao.E mong oa basebetsi-'moho le eena e ne e le Paul Steen, moprofesa oa mechanics ea mokelikeli Univesithing ea Cornell, ea hlokahetseng selemong se fetileng.Lilemong tse 'maloa tse fetileng, Steen o ile a thusa Glicksman lipatlisisong tsa hae mabapi le thepa ea microgravity a sebelisa mechanics ea mokelikeli oa sepakapaka le lipatlisiso tsa thepa.Springer Nature e ile ea nehelana ka khatiso ea November ea Microgravity ho Steen 'me ea ikopanya le Gliksman ho ngola sengoloa sa saense mabapi le thuto ka tlhompho ea hae.
Seo se ile sa ntšusumelletsa ho kopanya ntho e ’ngoe e thahasellisang eo Paul a neng a tla e ananela ka ho khetheha.Ehlile, babali ba bangata ba sengoloa sena sa lipatlisiso le bona ba thahasella sebaka seo Pauluse a kentseng letsoho ho sona, e leng interface thermodynamics,” ho boletse Gliksman.
Mosebetsi-’moho e mong ea ileng a bululela Gliksman hore a ngole sehlooho sena ke Semyon Koksal, moprofesa oa lipalo, hlooho ea lefapha le motlatsi oa mopresidente oa litaba tsa thuto Florida Institute of Technology, ea hlokahetseng ka March 2020. Gliksman o ile a mo hlalosa e le motho ea mosa, ea bohlale ea neng a le monate. ho bua le eena, a hlokomela hore o mo thusitse ho sebelisa tsebo ea hae ea lipalo lipatlisisong tsa hae.
“’Na le eena re ne re le metsoalle ea hlooho ea khomo ’me o ne a thahasella mosebetsi oa ka haholo.Semyon o ile a nthusa ha ke etsa li-equation tse fapaneng ho hlalosa phallo ea mocheso e bakoang ke ho kobeha, ”ho boletse Gliksman.Re ile ra qeta nako e ngata re buisana ka lipalo tsa ka le mokhoa oa ho li etsa, mefokolo ea tsona, joalo-joalo. E ne e le eena feela motho eo ke ileng ka buisana le eena 'me o ile a nthusa haholo ho qapa thuto ea lipalo le ho nthusa ho e lokisa."
Lintlha tse ling: Martin E. Gliksman et al., Surface Laplacian ea interfacial thermochemical potential: karolo ea eona ho thehoeng ha mokhoa o tiileng oa metsi, npj Microgravity (2021).DOI: 10.1038/s41526-021-00168-2
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