Tungsten Boride Upfu, WB2

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Tungsten Boride Upfu, WB2

BW2 ine yakanyanya kusungunuka poindi, kukwirira kuomarara, kukwirira kuitisa uye kukwirira kwenyonganiso nemishonga uye oxidation kuramba kumarudzi akasiyana enhau. Izvi zvakanakisa zvivakwa zvinogadzira WB makomputa Inoshandiswa zvakanyanya munzvimbo dzakaomarara .Kukuya kupfeka uye semiconductor firimu, yakanyanya tembiricha ngura electrode zvinhu, kukanda chakuvhuvhu, chinokukurwa uye zvichingodaro


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Molecular fomula WB2
CAS Nhamba 12228-69-2
Unhu  dema uye pfumbu hupfu
Kuwandisa  10,77 g / cm3
Nzvimbo yakanyunguduka 2900
Kushanda nekuda kwekuomarara kwayo kwakawanda inogona kushandiswa senge tembiricha yepamusoro uye hasha

>> COA

COA

>> XRD

COA
COA

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COA

>> Yakabatana data

Tungsten diboride
Sirivha chena octagonal crystal.
Hukama hwehukama 10.77, nzvimbo inonyungudika inenge 2900 ℃.
Insoluble mumvura, inogadzikana mu aqua regia.
Boron uye tungsten upfu zvakabatanidzwa-kupisa kune yakanyanya tembiricha.

Tungsten boride ine yakanyanya kusungunuka poindi, kukwirira kuomarara, makemikari kugadzikana uye zvimwe zvakakwana zvinhu Haisi chete nyowani yepamusoro yezvinhu, asi zvakare ine yakasimba kuomarara. Icho chinhu chakakosha kudzivirira bara muchiuto. Tungsten boride ine yakawanda chikamu zvikamu, uye chimiro chematanho akasiyana chinoshandukawo. Kwemakore anodarika makumi mashanu, iyo tungsten yepamusoro boride yakafungidzirwa kuve WB4, iyo ine matatu-mativi gridhi e boron maatomu. Iyo thermodynamic kugadzikana uye mechimiro zvivakwa zveanogona masisitimu ezvikamu zveiyo tungsten carbide system zvakarongedzwa zvakaringana nekubatanidza yekutanga chirevo kuverenga uye iyo thermodynamic kugadzikana:

Iyo yepamusoro boride yekuzivikanwa kwe tungsten inofanirwa kunge iri WB3 inoumbwa ne2-d planar boron maatomu, kwete WB4 inoumbwa ne3-D matatu-mativi matatu boroni maatomu grids.
Izvo zvinowanikwa kuti iyo shear modulus inowedzera pamwe nekuderera kwesimba rayo rinoumba mu boride system ye tungsten, ichiratidza kuti izvo zvemuchina zvivakwa zvakabatana zvakanyanya nekugadzikana kwavo kwethermodynamic.
Nekuda kweayo akasarudzika emagetsi, emagetsi uye emagetsi magineti, tungsten boride yakwezva kutarisisa kukuru mukutanga kwekutsvaga uye kushandiswa kwesainzi yezvinhu.
Nekuda kweiyo yakaderera yemahara diffusion coefficient yeWB2, parizvino, iyo synthesis ye dense tungsten diboride inonyanya kuwanikwa kuburikidza nekutsvukisa pasi pekupisa kwakanyanya uye kumanikidza. Kune rimwe divi, nekuti B inopwa nekupisa kwakanyanya. Naizvozvo, iko kugadzirira kwakananga kweWB2 block zvinhu zvine tungsten poda uye boron poda kunonetsa kudzora boron zvirimo, uye yakaderera borides (senge W2B) inogona kugadzirwa mune yekutsvedza maitiro, kuitira kuti dense block zvinhu neWB2 sechikamu chikuru haigone kuwanikwa zvizere.
Munda weKushandisa:
Kupfeka - kusagadzikana kupfeka uye semiconductor firimu yezvipfeko - zvinodzivirira zvikamu.

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