Tungsten kunye molybdenum zizinto zotshintsho ezinomgangatho ophezulu wokunyibilika kunye nokuqina okwenza ukuba zilungele uluhlu olubanzi lwezicelo. Zombini ezi zinto ziqhele ukusetyenziswa njengezikhephe zomoya ophuphumayo ngenxa yokumelana nobushushu obuphezulu kunye noxinzelelo lomphunga oluphantsi. Nangona kunjalo, kukho ukungafani phakathi kweenqanawa ze-tungsten kunye ne-molybdenum malunga nezicelo zabo, esiza kuthetha ngazo kweli nqaku.

Iinqanawa zeTungsten:

Izikhephe zeTungsten ziqhele ukusetyenziselwa ukufudumala kwesinyithi kunye ne-alloys, kunye nezinto eziphilayo. Oku kungenxa yokunyibilika kwazo okuphezulu (3,422°C) kunye noxinzelelo lomphunga ophantsi, obonelela ngomthombo ococekileyo wokuphuphuma komphunga. Ukongeza, iinqanawa ze-tungsten zikwasetyenziswa kwishishini le-semiconductor njengento yokufudumeza ngenxa ye-thermal conductivity ephezulu kunye nokuzinza okugqwesileyo komatshini phantsi kweemeko zobushushu obuphezulu.

Izikhephe zeTungsten ziyafumaneka ngeemilo ezahlukeneyo kunye nobukhulu, kubandakanya isetyhula, uxande, kunye necylindrical. Iinqanawa ze-tungsten ezijikelezayo zisetyenziselwa ukufudumeza kwe-thermal, ngelixa iinqanawa ze-cylindrical tungsten zisetyenziselwa ukufudumeza izinto. Iinqanawa ze-tungsten ezixande zisetyenziselwa ukufuduka kwe-thermal kunye nezicelo zokufudumeza.

Enye into engalunganga kwizikhephe ze-tungsten kukuthambekela kwabo ukusabela ngezinto ezithile. Ngokomzekelo, iinqanawa ze-tungsten zinokusabela kunye nezinye iikhompawundi ze-oksijini ezifana namanzi, i-oksijini, kunye ne-nitrogen ukwenza i-tungsten oxide, enokubangela ukuthotywa kwento yokufudumala. Ngenxa yoko, kubalulekile ukuphatha izikhephe ze-tungsten kwindawo ecocekileyo okanye kwindawo engasebenziyo.

Iinqanawa zeMolybdenum:

Izikhephe zeMolybdenum zikwasetyenziswa ngokubanzi ukufuduka kwesinyithi, iialloys, kunye nezinto eziphilayo. Izikhephe zeMolybdenum zinendawo yokunyibilika eyi-2,610°C kunye noxinzelelo lomphunga ophantsi, nto leyo ezenza zibe lolona khetho lubalaseleyo kwizicelo zobushushu obuphezulu. Zikwasetyenziswa kwishishini le-semiconductor, ngakumbi ukwenza izixhobo ezisekelwe kwi-silicon.

Izikhephe zeMolybdenum zifumaneka ngeemilo ezahlukeneyo kunye nobukhulu, kubandakanywa isetyhula, uxande, kunye necylindrical. Iinqanawa ze-circular molybdenum zisetyenziselwa ukufudumala kwe-thermal, ngelixa iinqanawa ze-cylindrical molybdenum zisetyenziselwa ukufudumeza.

Izikhephe zeMolybdenum zinotyekelo olusezantsi lokusabela ngezinto ezahlukeneyo, xa kuthelekiswa nezikhephe zetungsten. Oku kubangelwa ukuzinza kweekhemikhali eziphezulu ze-molybdenum eyenza ikwazi ukumelana ne-oxidizing kunye nokunciphisa imimandla. Ngoko ke, zifanelekile kwizinto ezifuna umgangatho ohambelanayo kunye nococeko.

Isishwankathelo, zombini iinqanawa ze-tungsten kunye ne-molybdenum zineempawu ezizodwa ezenza zibe zilungele izicelo ezahlukeneyo. Iinqanawa ze-Tungsten zifanelekile ukufudumala kwe-thermal kunye nezicelo zokufudumeza ezifuna iindawo eziphezulu zokunyibilika kunye nokuzinza. Ngakolunye uhlangothi, iibhothi ze-molybdenum zifanelekile kwizicelo eziphezulu zokushisa ezifuna ukuzinza kweekhemikhali eziphezulu kunye nokuchasana ne-oxidation kunye nokunciphisa. Ngoko ke, kubalulekile ukuqwalasela isicelo esithile xa ukhetha phakathi kwe-tungsten kunye neenqanawa ze-molybdenum.