Le miqathango ilandelayo iyafuneka ukuze ulumeke isibane se-arc yecathode:
- Umpu we-cathode ongenanto eyenziwe ityhubhu ye-tantalum ifakwe eludongeni lwegumbi lokugquma kwaye ingasetyenziselwa ukukhupha ukuhamba kwe-electron eshushu. Ububanzi bangaphakathi bombhobho we-flat φ 6 ~ φ 15mm, kunye nobukhulu bodonga lwe-0.8-2mm.
- Unikezelo lwamandla luqulunqwe yi-arc yokuqalisa unikezelo lwamandla kunye ne-arc egcina unikezelo lwamandla ngokunxuseneyo. I-voltage ye-arc ebetha amandla ombane yi-800-1000V, kunye ne-arc ebetha ngoku yi-30-50A; I-arc voltage yi-40-70V, kwaye i-arc yangoku yi-80-300A.
Inkqubo yokukhupha i-cathode arc enomgongxo ilandela inkqubo yokuguqula ukusuka ekukhanyeni okungaqhelekanga ukuya kukukhutshwa kwe-arc kwi "volt ampere characteristic curve". Okokuqala, unikezelo lwamandla luyafuneka ukubonelela nge-800V yombane wokuqalisa ukuvelisa ukukhutshwa okukhanyayo kwityhubhu ye-tantalum. Ubuninzi be-argon ion ngaphakathi kwe-tantalum tube bombard kunye nokutshisa ityhubhu kwiqondo lokushisa apho ii-electron ezishushu ziphuma khona, okubangela ukuba kubekho ukuhamba kwe-electron ye-plasma kunye nokunyuka ngokukhawuleza kwi-current ye-arc ye-cathode. Emva koko, unikezelo lwamandla oluphezulu lwangoku luyafuneka ukuze kugcinwe ukukhutshwa kwe-arc. Inkqubo yokuguqula ukusuka ekuphumeni okukhanyayo ukuya kwi-arc ngokuzenzekelayo, ngoko ke kuyimfuneko ukuqwalasela umbane onokuthi ukhuphe zombini i-voltage ephezulu kunye nephezulu yangoku.
Ukuba ezi mfuno zimbini zigxininiswe kumthombo wamandla omnye, isiphelo sesibini semveliso yesiguquli samandla kufuneka singxwelerheke ngeengcingo ezishinyeneyo kakhulu ukuze sijike ezininzi ukuze kuphume amandla ombane aphezulu kunye nephezulu yangoku, eya kuba ngumthombo wamandla umthamo omkhulu. Emva kweminyaka yokuphucula, kunokwenzeka ukulinganisa i-arc encinci yokuqalisa unikezelo lwamandla kunye nonikezelo lwamandla lwe-arc yolondolozo. I-arc yokuqalisa unikezelo lwamandla isebenzisa iingcingo ezicekethekileyo zomoya ukujika okuphindaphindiweyo, ezinokukhupha i-voltage ephezulu ye-800V ukutshisa iityhubhu ze-tantalum kunye nokuvelisa ukukhutshwa kokukhanya; Umbane we-arc unokukhupha amashumi eevolthi kunye namakhulu ee-ampere zangoku ngokujija ucingo olutyebileyo olunokujika okumbalwa ukugcina uzinzo lwe-cathode arc discharge. Ngenxa yoqhagamshelo oluhambelanayo lwezinto ezimbini zombane kwiityhubhu ze-tantalum, ngexesha lenkqubo yokuguqula ukusuka ekukhanyeni okungaqhelekanga ukuya kwi-arc discharge, umbane ombini uya kudibanisa ngokuzenzekelayo kwaye utshintshe ukusuka kwi-voltage ephezulu kunye ne-low current ukuya kwi-voltage ephantsi kunye ne-high current.
- Ngokukhawuleza lungisa umgangatho we-vacuum. Inqanaba le-vacuum yokukhutshwa okukhanyayo kwiityhubhu ze-tantalum malunga ne-100Pa, kwaye ulwakhiwo lwefilimu olufakwe phantsi kwezo meko ziphantsi zokufunxa lurhabaxa ngokungenakuthintelwa. Ngoko ke, emva kokutshisa ukukhutshwa kwe-arc, kuyimfuneko ukunciphisa ngokukhawuleza umthamo wokuhamba komoya kwaye ulungise ngokukhawuleza inqanaba le-vacuum kwi-8 × 10-1 ~ 2Pa ukufumana isakhiwo sokuqala sefilimu.
- I-turntable ye-workpiece ifakwe malunga negumbi lokugubungela, kunye ne-workpiece edibeneyo kwipali engathandekiyo yonikezelo lwamandla olubi kunye negumbi le-vacuum elixhunywe kwipali efanelekileyo. Ngenxa yoxinaniso oluphezulu lwangoku lwe-arc ye-cathode, i-voltage ye-bias ye-ion coated workpiece ayifuni ukufikelela kwi-1000V, ngokuqhelekileyo i-50-200V.
5. Misela i-coil ye-electromagnetic egxininisekileyo malunga nokuwa kwe-Gan, kwaye intsimi ye-electromagnetic eyenziwa ngokusetyenziswa kwangoku kwikhoyili inokujolisa umqadi we-electron kumbindi we-ingot yensimbi, ukwandisa ubuninzi bamandla okuhamba kwe-electron.
Ixesha lokuposa: Jul-20-2023