Nano Hafnium carbide HfC ufa

1. Makhalidwe a zida za hafnium carbide:

(1) Hafnium carbide (HfC) ndi ufa wotuwa wakuda wokhala ndi mawonekedwe a cubic wokhala ndi nkhope komanso malo osungunuka kwambiri (3890 ° C). Ndizinthu zomwe zimakhala ndi malo osungunuka kwambiri m'gulu limodzi lodziwika bwino ndipo ndizitsulo zosungunuka kwambiri zachitsulo zosungunuka. Zinthu zabwino.

(2) Pakati pa zinthu zodziwika, hafnium alloy (Ta4HfC5) yokhala ndi malo osungunuka kwambiri ndi hafnium alloy (Ta4HfC5). Hafnium alloy material ya 1 part ya hafnium carbide ndi 4 mbali za tantalum carbide ili ndi malo osungunuka a 4215 ℃, kotero ingagwiritsidwe ntchito ngati zida zamapangidwe pa injini za jet ndi daodan.

(3) Hafnium carbide imakhala ndi zotanuka kwambiri za nkhuku, magetsi abwino ndi matenthedwe matenthedwe, kagawo kakang'ono kakuwonjezera kutentha komanso kukana bwino. Ndizoyenera kumunda wa zida za rocket nozzle komanso ndizofunikira kwambiri za cermet.

2, Mndandanda wa zida za hafnium carbide

3. Kugwiritsa ntchito hafnium carbide:

(1) Hafnium carbide ndi kutentha kwambiri kugonjetsedwa, yanghua kugonjetsedwa ndi ceramic zakuthupi, zomwe zimakhala ndi ubwino wamagetsi abwino ndi matenthedwe otenthetsera komanso kuwonjezereka kochepa kwa kutentha. Hafnium carbide ndiyoyenera kupanga zida zofunika monga ma rocket nozzles ndi mapiko, ndipo imagwiritsidwa ntchito makamaka mu hangtian, zoumba zamafakitale ndi zina.

(2) Hafnium carbide imakhala ndi kuuma kwakukulu, ingagwiritsidwe ntchito ngati zowonjezera zowonjezera za carbide, ikhoza kupanga yankho lolimba ndi mankhwala ambiri (monga ZrC, TaC, etc.), ndipo yakhala ikugwiritsidwa ntchito kwambiri popanga zida zodula ndi nkhungu.

(3) Hafnium carbide imakhala ndi zotanuka kwambiri, magetsi abwino komanso matenthedwe matenthedwe, kagawo kakang'ono kakuwonjezera kutentha komanso kukana bwino. Ndizoyenera zida za rocket nozzle ndipo zitha kugwiritsidwa ntchito mumphuno ya roketi. Ili ndi ntchito zofunika kwambiri pazamlengalenga. Palinso ntchito zofunika pa nozzles, zomangira zosagwira kutentha kwambiri, maelekitirodi a arc kapena electrolysis.

(4) Hafnium carbide ili ndi kukhazikika kwa gawo lolimba, kukana kwa mankhwala, ndipo ili ndi kuthekera koyenera kugwiritsidwa ntchito m'malo otentha kwambiri. Kuphatikiza apo, kutulutsa filimu ya HfC pamtunda wa carbon nanotube cathode kumatha kupititsa patsogolo ntchito yake yotulutsa umuna.

(5) Kuphatikizika kwa hafnium carbide kumagulu a C / C kumatha kupititsa patsogolo kukana kwake. Hafnium carbide ili ndi zinthu zambiri zabwino kwambiri zakuthupi komanso zamankhwala, zomwe zimapangitsa kuti azigwiritsidwa ntchito kwambiri pazida zamakono zotentha kwambiri.