Li-alloys tse phahameng tsa entropy ke eng?

Litaba tsa Motheo

Li-alloys tse phahameng-entropy (HEAs) ke li-alloys tse entsoeng ka ho kopanya likarolo tse lekanang kapa tse batlang li le kholo tsa (hangata) tse hlano kapa ho feta. Pele ho kopanngoa ha lintho tsena, li-alloys tsa tšepe tse tloaelehileng li ne li e-na le karolo e le 'ngoe kapa tse peli tse kholo tse nang le likarolo tse nyenyane tsa likarolo tse ling.

Mohlala, likarolo tse ling li ka eketsoa ho tšepe ho ntlafatsa thepa ea eona, ka hona ho theha alloy e thehiloeng ho tšepe, empa hangata ka likarolo tse tlase haholo, joalo ka likarolo tsa khabone, manganese le tse ling ka litšepe tse fapaneng. Kahoo, li-alloys tse phahameng tsa entropy ke sehlopha se secha sa lisebelisoa.

Poleloana "high-entropy alloys" e qapiloe hobane keketseho ea entropy ea ho kopanya e phahame haholo ha ho na le palo e kholoanyane ea likarolo motsoakong, 'me likarolo tsa tsona li batla li lekana.

Application Prospect

Tebello ea ts'ebeliso ea li-alloys tse phahameng tsa entropy e pharaletseng haholo, e leng haholo-holo ka lebaka la thepa ea bona e ikhethang ea 'mele le lik'hemik'hale. Mona ke lisebelisoa tse ling libakeng tse ikhethileng:

1.Aerospace: Ka lebaka la matla a bona a phahameng, boima bo phahameng, khanyetso e phahameng ea ho apara le botsitso ba mocheso o phahameng, li-alloys tse phahameng tsa entropy li ntle haholo ha ho etsoa lienjineri tsa rokete, likarolo tsa sathelaete le likarolo tsa sebopeho sa sefofane se hlokang ho sebetsa mochesong o phahameng le tse ling tse feteletseng. tikoloho. Ho feta moo, li-alloys tse phahameng tsa entropy li ka boela tsa sebelisoa likarolong tsa bohlokoa tsa likoloi tsa hypersonic le masimong a kang li-blades tsa turbine tsa aeroengine.

2.Indasteri ea likoloi: Tšusumetso ea ho hanyetsa le ho hanyetsa ha kutu ea li-alloys tse phahameng tsa entropy li etsa hore e be eona e sebetsang ka ho fetisisa E nepahetseng bakeng sa enjene ea likoloi, phetisetso, chassis le likarolo tsa 'mele. Likarolo tsena li kenya letsoho ho tšoarella le polokeho ea koloi.

3.Indasteri ea elektronike: Ka lebaka la litšobotsi tsa motlakase o phahameng oa motlakase, mocheso o phahameng oa mocheso le thepa e phahameng ea tšireletso ea motlakase, li-alloys tse phahameng tsa entropy li na le mekhoa e mengata ea ho etsa lisebelisoa tsa elektronike, lipotoloho tse kopantsoeng le lisele tsa letsatsi. Sena se tla thusa ho tsamaisa ntlafatso ea ts'ebetso le mokhoa oa miniaturization oa lisebelisoa tsa elektroniki.

4.Matla a nyutlelie le lits'ebetso tse ling tsa sesole: Ho phaella lits'ebetsong tse ka holimo, li-alloys tse phahameng tsa entropy li ka boela tsa sebelisoa tšireletsong ea lihlekehleke tse nyenyane tsa nyutlelie, ho koahela bokaholimo ba likarolo tsa tšepe le lisebelisoa tse ling tse amanang le matla a sesole kapa a nyutlelie. Sena se bonts'a ts'ebeliso e pharaletseng ea li-alloys tse phahameng tsa entropy libakeng tse fapaneng tse ikhethang le litlhoko.

5.Mechine ea Mechanics le Phetoho le polokelo ea Matla: Li-alloys tse phahameng tsa entropy li lebeletsoe ho phetha karolo ea bohlokoa tšimong ea mechine ea meralo ka lebaka la thepa ea bona e babatsehang ea mechine. Ka nako e ts'oanang, boleng ba ts'ebeliso ea eona e ka bang teng molemong oa phetolo ea matla le polokelo le eona e lokeloa ke tlhokomelo le lipatlisiso

Batlisisa.

Lisebelisoa tsa 6.Medical: The biocompatibility le corrosion resistance of high-entropy alloys li ba fa mekhoa e ka sebelisoang tšimong ea lisebelisoa tsa bongaka, tse kang ho kenngoa ha meno, lisebelisoa tsa masapo, le lisebelisoa tse ling tsa bongaka tse hlokang ho kenngoa nako e telele 'meleng oa motho. Ka kakaretso, ka tsoelo-pele e tsoelang pele le tsoelo-pele ea saense le thekenoloji le tlhokahalo e ntseng e eketseha ea lisebelisoa tse ncha, ho ka boleloa esale pele hore lipatlisiso tse eketsehileng le liphello tsa nts'etsopele mabapi le tšebeliso ea li-alloys tse phahameng tsa entropy li tla hlaha nakong e tlang.