Isakhiwo somthombo wobushushu obunganyangekiyo silula, kulula ukusisebenzisa, kulula ukwenza, lolona hlobo lusetyenziswa kakhulu lomthombo womoya. Abantu badla ngokubizwa ngokuba yijenereyitha yobushushu okanye isikhephe somphunga.
Ukufudumeza iimfuno zezinto ezichaseneyo ezisetyenzisiweyo: ubushushu obuphezulu, ukuxhathisa, ukunyanzeliswa komphunga ophantsi kumaqondo aphezulu, akukho mpendulo yeekhemikhali kunye ne-membrane yezinto, ayivelisi ukuphuma kunye nokungcola. Izinto zokufudumeza ezikhethiweyo ezikhethiweyo ikakhulu kwiintsimbi eziphikisayo, ezifana ne-W, i-Mo, i-Ta kunye nezinye izinto okanye ukhetho lwe-high-purity, i-graphite ephezulu okanye i-boron nitride synthetic conductive ceramics kunye nezinye izinto. Ngamanye amaxesha, unokukhetha i-Fe, i-Ni, i-Ni-Cr i-alloy kunye ne-Pt njengemathiriyeli yomthombo womoya.
Umthombo ohlukeneyo wokufudumeza wokufudumeza umphunga wezinto eziqhelekileyo (ezifana ne-Ti, Mo, C, Ta, W, njl. njl.) yendawo yokunyibilika kunye noxinzelelo lomphunga kunye nobudlelwane bobudlelwane bobushushu buhlukile. Phakathi kwazo, i-tungsten iba brittle xa ifudunyezwa kwiqondo lobushushu lokuphuma komphunga ngenxa yemveliso yesiphambuka sokufudumeza. I-molybdenum, kwelinye icala, iyahluka ngokucoceka, kwaye ezinye ziba brittle kwaye ezinye zingabikho. I-Tungsten idibana nomphunga wamanzi ukwenza i-oksijini eguqukayo edibanisa i-WO3.
Ngoko ke, xa i-tungsten ifudumala kumphunga wamanzi oseleyo, izinto ezifudumalayo ziqhubeka ziphelile. Xa uxinzelelo lwegesi olushiyekileyo luphantsi, akukho kulahleka kwezinto ezininzi, kodwa kukungcoliseka okukhulu kwe-membrane.
Ukusetyenziswa kwemithombo ye-filamentary kufuneka ihlawule ingqalelo ekumanzini kocingo olushushu kwi-membrane. Umzekelo, ubushushu bocingo olushushu buphakama ngokukhawuleza, izinto ze-membrane akulula ukuba zinyibilike ngokukhawuleza zonke izinto ze-membrane kunye nokumanzisa kocingo olushushu akwanele. Ngenxa yoko, ifilimu enganyibilikiyo inokuwela kwi-basket yocingo. Ngexesha elifanayo, ukunyuka kweqondo lokushisa ngokukhawuleza kuya kubangela ukuba izinto ze-membrane kwigesi zikhutshwe ngokukhawuleza, zibangele amaqamza okanye ukutshiza, umphumo uya kwenza ukubunjwa kwamaconsi amancinci anamathele kwi-substrate. Ngoko ke, imithombo yefilament kufuneka isetyenziswe kunye nokulawula ukushisa.
Eyona nto ingathandekiyo yeengobozi zocingo, iikhoyili zeconical okanye iikhoyili ezijijekileyo kukuba ubungakanani bezinto ezixhasayo zefilim zincinci kakhulu, kwaye lo mthombo uya kubangela ukuba ubushushu bocingo olushushu bunyuke njengoko ubungakanani bezinto zefilimu ziyancipha emva kokuba izinto zefilimu zikhutshiwe, ngaloo ndlela kubangele ukuba kunyuke izinga lokunyuka komphunga. Oku kukwayingxaki ekufuneka iqatshelwe kwinkqubo yokwenza ifilim efuna ulawulo olungqongqo lwesantya somphunga.
(2) Umgaqo wokusebenza kunye nesakhiwo sibumba kunye nokusetyenziswa kweempawu
Resistance ukufudumeza evaporation umthombo, enyanisweni, i ukuxhathisa isifudumezi kukusetyenziswa generator ubushushu okanye iphenyane ukuphuphuma amandla ngokuthe ngqo, ukuze langoku ngokusebenzisa inani elikhulu Joule ubushushu kwaye ufumane ubushushu obuphezulu ukunyibilika izinto ifilimu metal, ukuze ukuphuphuma kwayo uhlobo lomthombo ukuphuphuma.
–Eli nqaku likhutshwa nguumenzi womatshini wokugqumaGuangdong Zhenhua
Ixesha lokuposa: Feb-23-2024