Chromium Boride Hmoov, CrB2

Nyob zoo, tuaj sab laj nrog peb cov khoom!

Chromium Boride Hmoov, CrB2

corrosion-resistant, thermal poob siab. Siv raws li coj-tiv taus, los tiv thaiv cov tshuaj tiv thaiv oxidation txheej thiab nuclear reactor hauv neutron haum txheej electrode catalyst, roj cell electrode electrode catalyst


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Cov khoom lag luam

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Cov mis mos molecular  Crb2
Tus Lej  12006-80-3
Nta  Nyiaj grey hlau hmoov
Melting taw tes  1300C
Yog ceev  7.63 g / cm3
Kev Siv  corrosion-resistant, thermal poob siab. Siv raws li coj-tiv taus, los tiv thaiv cov tshuaj tiv thaiv oxidation txheej thiab nuclear reactor hauv neutron absorptioncoating electrode catalyst, roj cell electrode electrode catalyst

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>> Cov Ntawv Pov Thawj Loj

COA

>> Cov ntaub ntawv muaj feem xyuam

Khoom npe: chromium diboride
Tus qauv ntawm cov tshuaj chromium diboride: b2cr
Molecular phaus: 73.62
Lub Npe Askiv: chromium boride (CrB2) EINECS: 234-499-3
Qhov ceev: 5.15 English alias: chromium diboride; monochromium diboride
Flash point: melting point: 1550oc
Nws yog siv rau kev tsim cov hluav taws xob kub hluav taws xob thiab cov npluag hluav taws xob ceramics.
Chromium diboride (CRB_ 2) Lub txheej muaj qhov chaw siab melting, siab hardness, siab hnav tsis kam thiab corrosion kuj. Tsis tas li ntawd, nws muaj cov tshuaj lom neeg zoo thiab tsis yooj yim rau kev sib khi nrog hlau. Raws li kev tiv thaiv txheej txheem nyuaj, nws xav kom ua raws li cov kev ua haujlwm tshwj xeeb chip ua no. Daim ntawv no tsuas yog ua raws CRB_ kev lag luam hauv tsev thiab txawv teb chaws kev tshawb fawb thiab kev loj hlob ntawm cov txheej tawv tawv yog tsom rau CRB kev tso nyiaj los ntawm kev sib xyaw PVD technology_ Cov kev npaj ua, cov qauv thiab cov khoom ntawm cov xim txheej tau kawm. Cov txiaj ntsig tau muaj qhov tseem ceeb ntawm science thiab kev thov muaj txiaj ntsig. Firstly, CRB tau muab los ntawm lub hwj chim siab pulsed magnetron sputtering (hipims) _
Qhov muaj pes tsawg leeg, theem ua qauv thiab cov yam ntxwv ntawm cov txheej tau raug ntaus cim.
Peb tau kawm txog kev txhuam thiab coj tus cwj pwm ntawm cov txheej xim hauv cov chaw sib txawv sib txawv (kev sib txhuam qhuav, dej distilled thiab dej hiav txwv) tau kawm. Cov txiaj ntsig tau qhia tias: CRB_ Cov txheej txheem qhia tau pom (101) cov kev taw qhia ntau dua, thiab tus qauv theem tseem ceeb yog CRB_ Qhov ntsuas piv ntawm B / Cr yog 1.76, qhov nyuaj thiab elastic qauv yog 26.9 ± 1.0 GPA thiab 306.7 ± 6.0 GPA, feem. Kev sib txhuam coefficients ntawm txheej hauv kev sib txhuam qhuav, dej distilled thiab seawater yog 0.75, 0.26 thiab 0.22, feem. Kev sib txhuam coefficient ntawm cov xim nyob rau hauv dej distilled thiab dej hiav txwv ib puag ncig yog txo vim qhov ciam ciam ntawm cov dej distilled thiab dej hiav txwv. Kev sib txhuam thiab hnav cov txheej txheem ntawm cov xim nyob rau hauv kev sib txhuam qhuav thiab dej distilled ib puag ncig yog abrasive coj, thaum nyob hauv ib puag ncig seawater, kev sib txhuam coefficient ntawm txheej txo qis zuj zus, Nws yog cov nyhuv synergistic ntawm kev xeb tsis zoo thiab hnav tsis zoo.

Qhov thib ob, raws li kev sib piv nrog hipims, CRB tau txais los ntawm DC magnetron sputtering los ntawm kev kho lub hom phiaj qhov chaw nyob deb_ Qhov ntsuas piv ntawm B / Cr sib txawv ntawm 1.9 txog 2.0 nrog kev hloov pauv ntawm qhov ntsuas kub. XPS cov txiaj ntsig tau qhia tias txheej txheej tseem yog qhov tseem ceeb ntawm CRB_ Cov txiaj ntsig tau qhia tias qhov roughness ntawm txheej yog me me thiab RQ nyob nruab nrab
1.11 nm thiab 1.95 nm. Nrog qhov nce ntawm qhov tso nyiaj kub, qhov muaj peev xwm tsis sib xws ntawm adsorbed atoms ntawm cov nplaim deg tau zoo tuaj, thiab qhov kev quaj ntawm txheej xim maj mam nce zuj zus, thiab cov qauv siv lead ua hloov pauv los ntawm kev sib xyaw ntawm (101) thiab (001) rau (001) qhov kev xav tau zoo; lub ntsej muag ntu ntawm cov xim sib pauv hloov pauv los ntawm cov pob zeb ua rau lub ntsej muag kom ntxhib ntxaib cov qauv (txog 50 nm hauv taub),
Thaum kawg, nws hloov mus ua tuab nano columnar qauv (txog 4 ~ 7 nm inch).
Nrog rau qhov nce ntawm deposition kub, cov khoom kho tshuab ntawm txheej tau zoo tuaj ua kom pom tseeb. Thaum qhov tso nyiaj qhov kub siab tshaj 300 ℃, superhard CRB nrog lub hardness ntau dua 40 GPA tuaj yeem tau txais Thaum Thaum qhov ntsuas qhov tso cua sov yog li 400 ℃, qhov nyuaj ntawm cov txheej yuav kub npaum li 50.7 ± 2 GPa. Cov kev hloov kho ntawm microstructure thiab cov khoom siv kho tshuab nrog qhov kub ntawm qhov kev tso tawm tau yog los ntawm (001) qhov kev taw qhia ntau dua thiab qhov ntau dua ntawm microstructure vim muaj qhov sib txawv ntawm qhov sib txawv ntawm cov deposition atoms. Thaum kawg, CRBs nrog (101) thiab (001) cov kev taw qhia zoo dua tseem tau kawm_ Cov thermal ruaj khov ntawm txheej tau sim, thiab CRB txheej txheej thiab CRB nyob rau qhov tsis sib txawv ntawm qhov kub tau soj ntsuam_ Cov khoom siv hluav taws xob zoo ntawm 2 txheej hauv 3.5 wt.%
NaCl daws tau tshawb xyuas. Cov txiaj ntsig tau qhia tias: (101) kev taw qhia qhov zoo dua ntawm CRB_ Ib theem tshiab tau tsim nyob rau ntawm 1000 ℃, thiab (001) kev taw qhia qhov zoo dua ntawm CRB_ Cov txiaj ntsig tau qhia tias ((101) - taw qhia CRB txheej pov thawj siab dua qhov kub thiab txias tsis txaus vim qhov ( 101) kev taw qhia qhov zoo dua ntawm CRB_ Cov txiaj ntsig tau qhia tias CRB txheej muaj qhov siab dua lub zog thiab cov lattice distortion zog dua li CRB_ Lub peev xwm tiv thaiv ntawm crb-2 txheej tau siab dua li ntawm cov cemented carbide, tab sis qhov xeb tam sim no tsawg dua ze li ntawm ob qhov xaj ntawm magnitude_ 2 txheej tuaj yeem tiv thaiv zoo cemented carbide.

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