Chidziwitso cha prepreatment of nickel thovu

Chithovu cha Nickelndi zinthu zomwe zimagwiritsidwa ntchito popanga maelekitirodi a batri, ndipo kupanga zinthu zamtundu wamba wamba ndi motere: siponji ya polyurethane imayendetsedwa koyamba, kenako ndi electrodeposited, ndipo pamapeto pake imasinthidwa.

Mu masitepe pamwamba, mankhwala conductive zambiri zikuphatikizapomankhwala plating, kupaka zomatira conductive, ndi vacuum platingm'njira zitatu; electrodeposition kungakhale sulphate kapena sulfamate nickel plating; Sintering yomwe ilipo imamalizidwa koyamba ndi mpweya kuwotcha siponji ya polyurethane, kenako ndikuchepetsa ndi kuyika siponji pansi pa mpweya wochepetsera wa hydrogen mu masitepe awiri, momwe mpweya woyaka siponji wa polyurethane umapangidwa ndi okosijeni ndikuwotchedwa pa kutentha kwa 300 mpaka 700. °C. Sintering ndondomeko imatsirizidwa ndi mpweya kuwotcha siponji ya polyurethane, ndiyeno kuchepetsa ndi kukhetsa siponji ya polyurethane mumlengalenga wochepetsetsa wa haidrojeni; Kuchepetsa chithandizo kumachitidwa pansi pa mpweya wochepetsera wa haidrojeni pa kutentha kwa 800 mpaka 1000 ° C kwa mphindi 30-60, ndipo mpweya wochepetsera ndi mpweya wowonongeka wa ammonia, ndipo kuchuluka kwa mpweya wowonongeka ndi 0.8-1.2 L / g (gilamu iliyonse. nickel imafuna 0.8-1.2 malita a ammonia wowononga mpweya kuti adye)

Njira yabwino yopangiranickel thovu, sitepe imene zikuphatikizapo conductivization, electrodeposition ndi sintering wa polyurethane siponji, yodziwika mu anati sitepe sintering ndi pyrolyze ndi sinter polyurethane thovu mwachindunji mu mpweya kuchepetsa pambuyo electrodeposition, mmene kuchepetsa mpweya ndi ammonia kuwola mpweya, kuchepetsa kutentha. ndi 400-1000 ° C., nthawi yochepetsera ndi 30-60 mphindi, ndi kuchuluka kwa Kuwonongeka kwa gasi ndi 0.4-0.8 L/g. (Galamu iliyonse ya nickel iyenera kuwononga malita 0.4-0.8 a mpweya wowola wa ammonia.) Mpweya wowola wa ammonia ndi wosakaniza wa nayitrogeni ndi haidrojeni, ndipo kuchuluka kwa nayitrogeni ndi haidrojeni ndi 1:3.

The anachita limagwirira kuti pambuyo electrodeposition wanickel thovumunali polyurethane siponji mwachindunji mu hydrogen kuchepetsa mpweya pyrolysis sintering, kumene mpweya ndi haidrojeni kanthu, kupanga CH4, C2H6 ndi ena mpweya hydrocarbons, pamwamba gasification ndondomeko zokwanira kuchotsa graphite C mu porous thupi zotsukira.

Imathetsa bwino zolakwa zomwe zilipo muukadaulo womwe ulipo wa thovu la faifi tambala mu njira yopangira sintering, monga zosavuta kusweka, kupindika arching, zokolola zochepa, kugwiritsa ntchito mphamvu zambiri, zinthu zamakina zamakina a thovu sizikhazikika.