molybdenum U-yakaita U-yakaita kupisa waya
Kusarudzwa kwetambo yakanakisa yechinhu chekupisa kunoenderana nezvinodiwa zvekushandisa. Nekudaro, zvimwe zvinojairwa zvinhu zvinoshandiswa pakudziya zvinhu zvinosanganisira:
1. Nickel-chromium alloy: Nickel-chromium alloy inoshandiswa zvakanyanya mukupisa zvinhu nekuda kwekukwirira kwayo kwepamusoro, kumira kwakanaka kweoxidation, uye kupisa kwakanyanya. Inowanzo shandiswa mumidziyo yemumba senge toasters, hair dryer, uye oveni.
2. Kanthal: Kanthal isimbi-chromium-aluminium alloy inozivikanwa nokuda kwesimba rayo repamusoro-tembiricha, yakanaka oxidation resistance, uye hupenyu hurefu hwebasa. Inowanzo shandiswa mumaindasitiri ekudziya ekushandisa senge kilns, mavira uye maovheni emaindasitiri.
3. Tungsten: Inozivikanwa nekunyungudika kwayo kwakanyanyisa, tungsten inoshandiswa muzvikumbiro zvinoda kupisa kwakanyanya, senge mavira ekupisa uye maitiro ehunyanzvi emaindasitiri.
4. Molybdenum: Molybdenum chimwe chinhu chine nzvimbo yakanyanyisa yakanyunguduka uye kupikisa kwakanaka kune corrosion uye oxidation, zvichiita kuti ive yakakodzera kune-high-temperature yekupisa zvinhu mumashandisirwo anokosha.
Iyo yakanakisa waya yechinhu chekudziya inotsamira pazvinhu zvakaita sezvinodiwa tembiricha yekushanda, nharaunda iyo ichashandiswa, uye chaiyo yekudziya zvinodiwa zvekushandisa. Chinhu chega chega chine zvachakanakira uye chinogumira, saka sarudzo inofanirwa kuve yakavakirwa pane izvo zvinodikanwa zvechinhu chekudziya chinoda kushandiswa.
Molybdenum inoonekwa seyakanaka conductor yekupisa, kunyangwe isingaite kupisa zvakanaka semamwe masimbi akadai semhangura kana aluminium. Thermal conductivity yemolybdenum patembiricha yekamuri ingangoita 138 W/m·K, iyo yakaderera pane mhangura (inenge 401 W/m·K) uye aruminiyamu (inenge 237 W/m·K).
Zvisinei, molybdenum's thermal conductivity ichiri yakakwirira kana ichienzaniswa nezvimwe zvinhu zvakawanda, kunyanya pakupisa kwepamusoro. Izvi zvinoita kuti molybdenum ive sarudzo yakakodzera yezvishandiso zvinoda kudziya kwepamusoro-tembiricha, senge zvinhu zvekudziya, mafito ekupisa uye mamwe masisitimu ekupisa.
Pamusoro pekupisa kwekushisa, molybdenum ine zvimwe zvinhu zvakakosha zvakadai seyakanyanya kunyunguduka, kupikisa oxidation, uye simba rakanaka remagetsi pakupisa kwepamusoro, zvichiita kuti zvive zvinhu zvakasiyana-siyana zvemhando dzakasiyana-siyana dzekushisa kwepamusoro.
Molybdenum inowanzo batwa nekupisa kuti ivandudze mashandiro ayo emuchina uye kubvisa kushushikana kwemukati. Iyo yekupisa yekurapa maitiro e molybdenum inowanzo sanganisira annealing, inodzorwa kudziyisa uye kutonhora maitiro. Matanho chaiwo ekurapa kupisa kwe molybdenum anogona kusanganisira:
1. Anealing: Molybdenum inowanzovharwa patembiricha yepamusoro, kazhinji iri pakati pe1,800 kusvika 2,200 madhigirii Celsius (3,272 kusvika 3,992 madhigirii Fahrenheit). Izvo zvinyorwa zvinobatwa pane ino tembiricha kwenguva yakati kuti zvibvumire recrystallization uye kukura kwezviyo, izvo zvinobatsira kudzoreredza kushushikana kwemukati uye kugadzirisa ductility.
2. Kutonhodzwa kunodzorwa: Mushure mekuita annealing, molybdenum inonyoroveswa zvishoma nezvishoma kusvika kune tembiricha yekamuri nenzira inodzorwa kudzivirira kuumbwa kwemukati kushushikana kutsva uye kuchengetedza microstructure inoda.
Iwo chaiwo maparamendi eiyo kupisa kupisa maitiro, anosanganisira tembiricha, nguva uye kutonhora mwero, anotemerwa zvichienderana neinodiwa mechanical zvivakwa uye chaiyo application zvinodiwa.
Pakazere, kurapwa kwekupisa kwe molybdenum kunovavarira kukwidziridza microstructure yayo uye michina zvivakwa kuti ive nechokwadi chekukodzera kwayo kwepamusoro tembiricha yekushandisa senge kugadzirwa kwezvinhu zvekudziya, zvikamu zvechoto uye zvimwe zvehunyanzvi zvemaindasitiri.
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