Isetyenziselwa ntoni i-tungsten hexafluoride?
Isetyenziselwa ntoni i-tungsten hexafluoride?
Tungsten hexafluorideyirhasi engenambala, eyityhefu kunye nomhlwa enobunzima obumalunga ne-13 g/L, nto leyo emalunga ne-11 eliphindwe kayi-11 kuxinano lomoya kunye nenye yeegesi ezixineneyo. Kwishishini le-semiconductor, i-tungsten hexafluoride isetyenziswa ikakhulu kwinkqubo yokubeka umphunga wekhemikhali (CVD) ukufaka isinyithi se-tungsten. Ifilimu ye-tungsten egciniweyo ingasetyenziselwa njengomgca wokudibanisa ngokusebenzisa imingxuma kunye nemingxuma yokudibanisa, kwaye ineempawu zokuchasana okuphantsi kunye nenqanaba eliphezulu lokunyibilika. I-Tungsten hexafluoride ikwasetyenziswa kwi-chemical etching, i-plasma etching kunye nezinye iinkqubo.
Yeyiphi eyona gesi ixineneyo engeyotyhefu?
Eyona gesi ixineneyo engeyotyhefu yi-argon (Ar) enoxinano lwe-1.7845 g/L. I-Argon yigesi engasebenziyo, ayinambala kwaye ayinavumba, kwaye ayisebenzi ngokulula kunye nezinye izinto. Igesi yeArgon isetyenziswa kakhulu ekukhuselweni kwegesi, i-welding yesinyithi, ukusika isinyithi, i-laser kunye nezinye iindawo.
Ngaba i-tungsten yomelele kune-titanium?
I-Tungsten kunye ne-titanium zombini zizixhobo zetsimbi ezinamaqondo aphezulu okunyibilika kunye namandla. I-melting point ye-tungsten yi-3422 ° C kwaye amandla yi-500 MPa, ngelixa i-melting point ye-titanium yi-1668 ° C kwaye amandla angama-434 MPa. Ngoko ke, i-tungsten yomelele kune-titanium.
Iyingozi kangakanani i-tungsten hexafluoride?
Tungsten hexafluorideyigesi eyityhefu kakhulu enokubangela umonakalo omkhulu kumzimba womntu ukuba uphefumle. I-LD50 ye-tungsten hexafluoride yi-5.6 mg / kg, oko kukuthi, i-inhalation ye-5.6 mg ye-tungsten hexafluoride ngekhilogram yobunzima bomzimba iya kubangela izinga lokufa kwe-50%. I-Tungsten hexafluoride inokucaphukisa iphecana lokuphefumla, ibangele iimpawu ezifana nokukhohlela, ukuqina kwesifuba, kunye ne-dyspnea. Iimeko ezinzima zinokukhokelela kwi-edema ye-pulmonary, ukusilela kokuphefumla kunye nokufa.
Ngaba i-tungsten iya kuhlwa?
I-Tungsten ayiyi kuhlwa. I-Tungsten yintsimbi engasebenziyo engaphenduli ngokulula ngeoksijini esemoyeni. Ngoko ke, i-tungsten ayiyi kugqwala kwiqondo lokushisa eliqhelekileyo.
Ngaba iasidi inokugqwesa i-tungsten?
I-Acids inokuyonakalisa i-tungsten, kodwa ngesantya esincinci. Iiasidi ezinamandla ezifana ne-sulfuric acid egxininisiweyo kunye ne-hydrochloric acid egxininisiweyo inokugqwesa i-tungsten, kodwa ithatha ixesha elide. Iiasidi ezibuthathaka ezifana ne-dilute sulfuric acid kunye ne-dilute hydrochloric acid zinempembelelo ebuthakathaka yokubola kwi-tungsten.
