Molybdenum Silicide, MoSi2

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Molybdenum Silicide, MoSi2

Molybdenum disilicide (Molybdenumdisilicide, MoSi2) ke mofuta oa metsoako ea silicon molybdenum, hobane radius tse peli tsa athomo li ne li ts'oana, elektronegativity e haufi, ka hona e ts'oana le mofuta oa tšepe le ceramic.


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Molybdenum disilicide (Molybdenumdisilicide, MoSi2) ke mofuta oa metsoako ea silicon molybdenum, hobane li-radius tse peli tsa athomo li ne li ts'oana, elektronegativity e haufi, ka hona e ts'oana le mofuta oa tšepe le letsopa. conductivity, silicon dioxide passivating lera ka thehoa holim'a metsi ka mocheso phahameng ho thibela ho kena moea eketsehileng. Ponahalo ea eona ke 'mala o moputsoa oa tšepe, o tsoang mohahong oa eona oa "quadric" oa "kristale," hape ho na le sebopeho sa kristale se mahlakore a mane empa se sa tsitsang. Ha e qhibilihe ka li-acid tse ngata, empa e qhibiliha ka acid ea nitric le hydrofluoric acid.
MoSi2 ke mofuta oa mesophase o nang le likarolo tsa silicon tse phahameng ka ho fetisisa mo-SI binary alloy system.Ho na le mofuta oa mocheso o phahameng o nang le ts'ebetso e ntle haholo.Good high oxidation resistance, mocheso oa ho kenella ha oxidation ho fihlela 1600 ℃, e lekanang le SiC; Moderate segokanyipalo (6.24g / cm3); Lower mogote katoloso ya coefficient (8.1 × 10-6K-1); Good conductivity motlakase; High brittle ductile phetoho mocheso (1000 ℃) tlase ceramic - joaloka brittleness thata. Ho 1000 ℃ ka holim'a tšepe joaloka MoSi2, molybdenum le silicon li kopantsoe ke litlamo tsa tšepe, silicon le silicone li tlamiloe ka litlamo tse kopaneng, le molybdenum disilicide. Ha e qhibilihe ka har'a li-acid tsa matsoai ka kakaretso (ho kenyeletsoa le aqua aqua), empa e qhibiliha ka motsoako oa asiti ea nitric le hydrofluoric acid, e na le bokhoni bo botle ba ho futhumatsa antioxidant ebile e sebelisoe joalo ka mocheso o phahameng (& LT; Heating element e sebetsang moeeng o nang le oxidizing ho 1700 In. Moeeng oa oxidizing, lera le sireletsang le theoa holima khalase e teteaneng ea silica (SiO2) e chesitsoeng ka mocheso o phahameng ho thibela moea o tsoelang pele oa Ha mocheso oa ntho e futhumatsang o phahame ho feta 1700 ℃, ho thehoa filimi e sirelletsang ea SiO2, e thatafalitsoeng ka 1710 ℃ ebe e kopantsoe le
SiO2 ka marotholi a entsoeng ka ho qhibilihisoa, ka lebaka la motsamao oa katoloso ea bokaholimo, e lahleheloa ke matla a eona a ho itšireletsa.Ka tlasa ketso ea oxidant, ha elemente e sebelisoa khafetsa, e etsa filimi e sireletsang hape. lithemparetjha tse tlase, elemente e ke ke ea sebelisoa nako e telele ho 400-700 ℃. Molybdenum disilicide e sebelisoa masimong a thepa e koahelang mocheso o phahameng oa anti-oxidation, likarolo tsa motlakase oa motlakase, lifilimi tsa elektrone tse kopaneng, thepa ea sebopeho, matlafatso ea lisebelisoa tse ngata, roala lisebelisoa tse sa keneng, lisebelisoa tsa khokahano tsa letsopa la sebopeho, jj E ajoa liindastering tse latelang

1) Indasteri ea lik'hemik'hale ea matla: likarolo tsa ho futhumatsa motlakase, mocheso o phahameng oa mocheso bakeng sa lisebelisoa tsa athomo, li-burner tsa khase, li-thermocouples tse phahameng tsa mocheso le methapo ea tsona e sireletsang, tsoana le sebopi bakeng sa lisebelisoa tse qhibilihisang (tse sebelisetsoang ho qhibilihisa sodium, lithium, lead, bismuth, thini le lisebelisoa tse ling. ).

2) indasteri ea Microelectronics: MoSi2 le lisebelisoa tse ling tsa tšepe tse sa sebetseng Ti5Si3, WSi2 le TaSi2 ke likhetho tsa bohlokoa bakeng sa GATE le khokahano ea lifilimi tse tšesaane tsa LSI.

3) Indasteri ea Aerospace: E batlisitsoe ka bophara le ka botebo ebile e sebelisoa joalo ka mocheso o phahameng oa li-antioxidant tse koahelang lintho, haholoholo joalo ka likarolo tsa enjine ea turbine, joalo ka li-blade, impeller, burner, nozzle le thepa ea ho tiisa thepa. Lisebelisoa tsa moaho tse kopaneng e le lisebelisoa tsa sebopeho sa mochini tse sebelisoang maemong a phahameng a mocheso, li-burner tsa khase, li-nozzle, li-filters tsa mocheso o phahameng le li-spark plugs tsa lifofane le li-turbine tsa khase ea likoloi. Ka lebaka leo, mocheso o tlase o matlafatsang le mocheso o phahameng oa matlafatso ea molybdenum disilicate ke mahlale a morao-rao bakeng sa ts'ebeliso ea ona e le lisebelisoa tsa sebopeho. Likarolo tse atisang ho sebelisoa ka moly Bdenum disilicide alloying ke li-silicide tse 'maloa feela tse nang le kopano ea kristale e tšoanang kapa e tšoanang le molybdenum disilicide, joalo ka WSi2, NbSi2, CoSi2, Mo5Si3 le Ti5Si3, eo har'a eona WSi2 e leng eona e ntle ka ho fetesisa. Ho hlakile hore molybdenum disilicide e na le botsitso bo botle ba lik'hemik'hale le bokhoni bo nang le lisebelisoa tsohle tsa ceramic (tse kang SiC, TiC, ZrO2, Al2O3, TiB2, jj.).
Ka hona, tsela e atlehang ka ho fetisisa ea ho ntlafatsa thepa ea mochini oa molybdenum disilicate ke ho lokisa molybdenum disilicate composite.


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