Nano Hafnium carbide HfC phofo
1. Litšobotsi tsa thepa ea hafnium carbide:
(1) Hafnium carbide (HfC) ke phofo e bohlooho-e ntšo e nang le sebopeho sa sefahleho sa sefahleho sa cubic le sebaka se phahameng haholo sa ho qhibiliha (3890 ° C). Ke thepa e nang le ntlha e phahameng ea ho qhibiliha ka har'a motsoako o le mong o tsejoang 'me ke sebaka se phahameng sa ho qhibiliha sa tšepe se qhibilihisang lesela la crucible. Boitsebiso bo botle.
(2) Har'a lintho tse tsejoang, motsoako oa hafnium (Ta4HfC5) o nang le ntlha e phahameng ea ho qhibiliha ke motsoako oa hafnium (Ta4HfC5). Thepa ea hafnium alloy ea karolo e le 'ngoe ea hafnium carbide le likarolo tse 4 tsa tantalum carbide e na le ntlha ea ho qhibiliha ea 4215 ℃, kahoo e ka sebelisoa e le thepa ea meralo ho lienjini tsa jet le daodan.
(3) Hafnium carbide e na le coefficient e phahameng ea elastic ea khoho, motlakase o motle le motlakase oa mocheso, coefficient e nyenyane ea ho atolosa mocheso le ho hanyetsa phello e ntle. E loketse tšimo ea lisebelisoa tsa rocket nozzle hape ke thepa ea bohlokoa ea cermet.
2, Lenane la thepa ea hafnium carbide
| Kereiti | Boholo bo sa Lekaneng(nm) | Bohloeki(%) | SSA(m2 /g) | Boima ba 'mele(g/cm 3) | Sebopeho sa Crystal | Mmala |
| Nanometer | 100nm 0.5-500um,1-400mesh | >99.9 | 15.9 | 3.41 | hexagon | Ntsho |
3. Tšebeliso ea hafnium carbide:
(1) Hafnium carbide ke mocheso o phahameng o thibelang mocheso, thepa ea ceramic e hanyetsanang le yanghua, e nang le melemo ea motlakase o motle oa motlakase le oa mocheso le katoloso e tlaase ea mocheso. Hafnium carbide e loketse ho etsa likarolo tsa bohlokoa tse kang li-rocket nozzles le mapheo a mapheo, 'me e sebelisoa haholo-holo ho hangtian, lirafshoa tsa indasteri le masimo a mang.
(2) Hafnium carbide e na le boima bo phahameng, e ka sebelisoa e le li-additives tsa carbide tse entsoeng ka samente, e ka etsa tharollo e tiileng e nang le metsoako e mengata (e kang ZrC, TaC, joalo-joalo), 'me e sebelisitsoe haholo tšimong ea lisebelisoa tsa ho itšeha le hlobo.
(3) Hafnium carbide e na le coefficient e phahameng ea elastic, conductivity e ntle ea motlakase le ea mocheso, coefficient e nyenyane ea ho atolosa mocheso le ho hanyetsa phello e ntle. E loketse lisebelisoa tsa rocket nozzle mme e ka sebelisoa ka nkong ea lirokete. E na le lits'ebetso tsa bohlokoa sebakeng sa aerospace. Ho boetse ho na le lits'ebetso tsa bohlokoa ho li-nozzles, li-linings tse hanyetsanang le mocheso o phahameng, li-electrode bakeng sa arc kapa electrolysis.
(4) Hafnium carbide e na le botsitso bo botle ba mohato o tiileng, lik'hemik'hale tse hanyetsanang le lik'hemik'hale, 'me li na le monyetla oa ho ba tse loketseng ho sebelisoa libakeng tse phahameng tsa mocheso. Ho feta moo, ho etsa mouoane filimi ea HfC holim'a carbon nanotube cathode ho ka ntlafatsa haholo ts'ebetso ea eona ea tlhahiso ea tšimo.
(5) Ho eketsoa ha hafnium carbide ho li-composite tsa C / C ho ka ntlafatsa ho hanyetsa ha eona. Hafnium carbide e na le lisebelisoa tse ngata tse ntle tsa 'mele le tsa lik'hemik'hale, e leng se etsang hore e sebelisoe haholo linthong tse teng hona joale tsa mocheso o phahameng oa chao.
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