Nano Hafnium carbide HfC hupfu
1. Hunhu hwehafnium carbide zvinhu:
(1) Hafnium carbide (HfC) ipfumbu-dema pfumbu ine face-centered cubic structure uye yakanyanya kunyungudika (3890 ° C). Icho chinhu chine yakakwira kunyungudika mune inozivikanwa imwechete komboni uye inzvimbo yakakwira yekunyungudika simbi inonyungudutsa crucible lining. Zvinhu zvakanaka.
(2) Pakati pezvinhu zvinozivikanwa, iyo hafnium alloy (Ta4HfC5) ine high melting point ndiyo hafnium alloy (Ta4HfC5). Iyo hafnium alloy material ye 1 chikamu che hafnium carbide uye 4 zvikamu zve tantalum carbide ine nzvimbo yekunyunguduka inosvika 4215 ℃, saka inogona kushandiswa sezvimiro zvejet injini uye daodan.
(3) Hafnium carbide ine yakakwira elastic coefficient yehuku, yakanaka magetsi uye yekupisa conductivity, diki yekupisa yekuwedzera coefficient uye yakanaka kukanganisa kuramba. Inokodzera munda we rocket nozzle zvinhu uye zvakare yakakosha cermet zvinhu.
2，Indekisi yehafnium carbide zvinhu
| Giredhi | Chikamu Chekukura(nm) | Kuchena(%) | SSA(m2 /g) | Density(g/cm 3) | Crystal Structure | Color |
| Nanometer | 100nm 0.5-500um,1-400mesh | >99.9 | 15.9 | 3.41 | hexagon | Nhema |
3. Kushandiswa kwehafnium carbide:
(1) Hafnium carbide inodzivirira tembiricha yakakwira, yanghua inodzivirira ceramic zvinhu, ine zvakanakira zvemagetsi uye kupisa conductivity uye kuderera kwekuwedzera kwemafuta. Hafnium carbide yakakodzera kugadzira zvikamu zvakakosha senge rocket nozzles uye mapapiro emapapiro, uye inonyanya kushandiswa mu hangtian, maindasitiri ceramics nemimwe minda.
(2) Hafnium carbide ine hurema hwakanyanya, inogona kushandiswa semasimende ekuwedzera carbide, inogona kuumba mhinduro yakasimba ine mishonga yakawanda (yakadai seZrC, TaC, nezvimwewo), uye yakashandiswa zvakanyanya mumunda wekucheka zvishandiso uye molds.
(3) Hafnium carbide ine yakakwira elastic coefficient, yakanaka magetsi uye yekupisa conductivity, diki yekupisa yekuwedzera coefficient uye yakanaka kukanganisa kuramba. Inokodzera rocket nozzle zvinhu uye inogona kushandiswa mumhino cone yemaroketi. Iine zvakakosha maapplication mumunda weaerospace. Kune zvakare zvakakosha maapplication mumanozzles, yakakwirira-tembiricha inodzivirira linings, electrodes yearc kana electrolysis.
(4) Hafnium carbide ine good solid-phase stability, chemical resistance, uye ine mukana wekukodzera kushandiswa munzvimbo dzinopisa. Pamusoro pezvo, kufefetedza firimu reHfC pamusoro pekabhoni nanotube cathode kunogona kuvandudza zvakanyanya kuita kwayo kuburitsa munda.
(5) Kuwedzerwa kwehafnium carbide kuC / C composites kunogona kuvandudza kubviswa kwayo. Hafnium carbide ine akawanda akanakisa emuviri uye makemikari zvivakwa, zvichiita kuti ishandiswe zvakanyanya mune yazvino chao yakakwirira-tembiricha zvinhu.
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