Tantalum carbide hmoov, TaC

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Tantalum carbide hmoov, TaC

Kev ntsuas thev naus yog 1.44, lub ntsiab lus melting yog 3730-3830 ° C, coefficient ntawm thermal nthuav yog 8.3 × 10-6, elastic qauv yog 291GPa, coefficient ntawm thermal conductivity yog 0.22j / cm · S · C.
Nta thiab siv
Zoo tshuaj lom neeg ruaj khov, insoluble hauv acids. Lub zog antioxidant muaj zog. TaC feem ntau yog sib txuas los ntawm tantalum pentoxide thiab carbon dub hauv qhov ntxig lossis txo qhov huab cua los tsim cov tooj liab.


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Tanmlum carbide
Tus qauv tshuaj lom neeg yog TaC, ntsej muag-sau lo lus teb roj ntoo.
parameter
Kev ntsuas thev naus yog 1.44, lub ntsiab lus melting yog 3730-3830 ° C, coefficient ntawm thermal nthuav yog 8.3 × 10-6, elastic qauv yog 291GPa, coefficient ntawm thermal conductivity yog 0.22j / cm · S · C.
Nta thiab siv
Zoo tshuaj lom neeg ruaj khov, insoluble hauv acids. Lub zog antioxidant muaj zog. TaC feem ntau yog sib txuas los ntawm tantalum pentoxide thiab carbon dub hauv qhov ntxig lossis txo qhov huab cua los tsim cov hmoov tooj liab. Cov khoom lag luam nrog lub siab ntom ntom thiab nws yog xim hlau ci tuaj yeem ua los ntawm kub nias txoj kev sintering. Siv ua lub zog rau cov khoom siv aerospace thiab alloys nyuaj.
Tantalum carbide
Qhov xwm ntawm tus
Lub teeb xim av nws yog xim hlau sau lo lus crystalline hmoov, belongs rau sodium chloride cubic Crystal system. Insoluble hauv dej, insoluble hauv in acidsic acids, soluble nyob rau hauv kev sib xyaw ua ke ntawm hydrofluoric thiab nitric acids thiab soluble hauv decomposition. Lub zog oxidation tsis kam, yooj yim yuav fused thiab decomposed los ntawm potassium pyrosulfate. Hluav taws xob conductivity loj, muaj 30 Ω thev hauv chav tsev kub, khoom plig superconducting.
siv
Siv rau hauv cov hmoov hlau metallurgy, txiav cov cuab yeej, zoo nkauj ceramics, tshuaj vapor tso, nyuaj hnav tiv taus cov cuab yeej hlau, cov cuab yeej, pwm thiab hnav cov txheej txheem tiv taus ntxiv, txhim kho cov tawv ntawm alloy. Lub cev lub cev tsis muaj zog ntawm tantalum carbide qhia cov xim kub thiab tuaj yeem siv ua cov ntaub ornament rau watches. Tantalum carbide sintered nplej kev loj hlob inhibitor tseem siv los inhibit grain kev loj hlob, nrog tus ntom ntawm 14.3g / cm3.

Tantalum carbide thiab hafnium carbide tag nrho rau cov khoom siv refractory ceramics, txhais tau hais tias cov khoom siv ob qho no muaj cov khoom kub zoo tshaj plaws tsis zoo ntawm cov khoom siv ob zaug no muaj peev xwm tiv taus huab siab, cov ntawv thov muaj peev xwm txhais tau tias lawv yuav suav nrog kev kub ceev ntawm qhov shuttle's thermal tiv thaiv system, thiab lub zog nuclear reactor roj cladding ntawm super kub ib puag ncig, txawm li cas los xij, txij li tsis tau tshwm sim hauv chav kuaj tuaj yeem kuaj TaC thiab HfC melting kis ntawm ob hom kev siv tshuab ceramic, ua rau cov neeg tsis paub meej, txawm tias lawv muaj peev xwm tiag tiag ua haujlwm nyob rau hauv huab cua ib puag ncig huab cua kom txog qhov kawg no, cov kws tshawb nrhiav tau tsim ib yam tshiab ntawm kev siv tshuab cua sov ntau heev, siv laser los ntsuas qhov kub tsis kam ntawm TaC thiab HfC siv cov txheej txheem no, cov kws tshawb nrhiav tau txheeb xyuas TaC thiab HfC ob qho tib si thiab melting kis ntawm cov sib tov cov kev kawm nyuam qhuav luam tawm nyob rau hauv

Cov Ntawv Tshawb Fawb Txog Kev Tshawb Fawb (Cov Ntawv Qhia Txog Kev Tshawb Fawb), lawv tau pom tias qhov sib xyaw ntawm ob hom kev ua kua (Ta0.8 H2O20C) ntawm lub ntsiab lus pom tau tias sib xws li cov kev tshawb fawb dhau los, tau mus txog $ 3905, tab sis lub ntsiab lus ploj ntawm ob lub tebchaw no nws tus kheej tau siab dua yav tas los pomTaC melting taw tes mus txog $ 3768, thaum HfC yog 3958, cov kws tshawb nrhiav tau hais tias qhov tshwm sim ntawm ob hom khoom no, yuav qhib kev rau cov tiam tom ntej ntawm kev tsav dav hlau hypersonic kev txhim kho lub tsheb uas txhais tau tias yav tom ntej huab cua tuaj yeem ua tau sai dua puas tau, kawm ntawv yog Omar, sadie LouSi, Mr Barak (Omar Cedillos Barraza) Dr Hauv chav haujlwm ntawm physics ntawm kev kawm qib siab hauv nroog London, thaum PhD ntawm Sadie LouSi Mr Barak,

Dr Tam sim no koom nrog cov xibfwb hauv tsev kawm qib siab hauv Texas ntawm el paso, sadie LouSi, Mr Barak, "Dr.When ya ntawm hypersonic nrawm dhau ntawm Mach 5, qhov kev sib txhuam nrog cov huab cua ua rau muaj qhov kub siab heev. Tsis yog TaC thiab HfC tsis muaj tau siv nyob rau hauv kev tsim kho lub zog hypersonic mus txog hnub, tab sis peb qhov kev tshawb pom tshiab qhia tiasThan peb siv los xav tias ob hom khoom siv no ua rau cua sov, qhov tseeb lawv cov kev ua kom sov tiv thaiv tau zoo tshaj li lwm cov tebchaw paub txog tus txiv neej txhais tau tias qhov tseeb tias lawv lossis tuaj yeem siv rau qhov chaw tshiab: hauv huab cua, lub dav hlau muaj peev xwm zoo li lub dav hlau zoo tib yam ntawm lub dav hlau, tom qab ntawd tuaj yeem nyob hauv qhov chaw ntawm kev ceev ntawm lub davhlau hypersonic ob hom khoom no tuaj yeem ua rau lub chaw ya muaj peev xwm txav rov qab thiab sib nrug ntawm cov huab cua nyob hauv cov huab cua sov tsim los ntawm piv txwv ntawm TaC thiab kev siv peev xwm ntawm HfC thiab dav hlau qhov ntswg cap thiab kev sib txhuam nrog lub ntiaj teb sab nraud yog qhov cuab yeej loj tshaj plaws sab nraud thaum lub caij dav hlau tam sim no, Mach 5 lub chaw huab cua. tseem tsis tau muaj peev xwm tsim cov dav hlau, tab sis Dr. Cediloth

Baraza taw qhia tias kev npau suav no tej zaum yuav ua tiav zoo yav tom ntej. Dr. Cediloth Baraza ntxiv:
Peb cov kev ntsuam xyuas qhia tau tias lub tsev ntawm yav tom ntej chaw nyob hauv qhov chaw, ob yam khoom siv no muaj peev xwm loj ntawm ob hom khoom no los muaj peev xwm tiv taus xws li qhov kub siab dhau, qhov no txhais tau tias muaj ib hnub yav tom ntej, muaj huab cua tsim lub dav hlau hypersonic yog tiag tiag muaj peev xwm yog tias peb tuaj yeem ya nrawm nrawm ntawm Mach 5, tom qab lub sijhawm ntawm davhlau los ntawm London mus rau Sydney xav tau tsuas yog siv sijhawm li 50 feeb, qhov no yuav coj lub ntiaj teb qhib rau kev xeeb menyuam nrog txoj kev ua lag luam tshiab ntawm lub ntiaj teb tshiab.

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