
Ma superalloys opangidwa ndi cobalt ndi gulu la zida zachitsulo zogwira ntchito kwambiri zomwe zimapangidwira kuti zikhalebe ndi mphamvu zamakina, kukhazikika kwapamtunda, komanso kukana kwa dzimbiri pa kutentha kwambiri, nthawi zambiri kuposa zomwe ma superalloys opangidwa ndi faifi tambala amayamba kufooka. Ndizinthu zapangondya pazinthu zofunika kwambiri m'malo ovuta kwambiri, makamaka muzamlengalenga, ma turbines amafuta am'mafakitale, ndi ma implants azachipatala.
Kuchita kwawo kwapamwamba kumachokera ku mphamvu ya cobalt-chromium matrix komanso kuchuluka kwa tinthu tating'ono ta carbide tolimba.
Kutentha Kwapadera Kwambiri Mphamvu: Ma aloyi a cobalt amawonetsa malo osungunuka kwambiri komanso kuuma kotentha komanso kukana kukwawa kuposa ma aloyi a faifi pa kutentha pamwamba pa 1000 ° C (1832 ° F). Izi zikutanthauza kuti amakana kufewetsa ndi kupunduka pansi pa kupsinjika pa kutentha kwapafupi ndi kusungunuka.
Kulimbana Kwapadera Kwavalidwe & Kulimbana ndi Galling: Kuuma kwawo komwe kumachitika nthawi zambiri kumalimbikitsidwa ndi netiweki ya ma carbides olimba, kumapereka kukana kwamphamvu kwa kuvala kwa abrasive, kuvala zomatira (kugunda), komanso kukhumudwa. Izi zimawapangitsa kukhala abwino kwa mapulogalamu ovala akuyang'ana.
Kutentha Kwabwino Kwambiri Kutentha & Kukaniza Kwaoxidation: Zomwe zili mu chromium (nthawi zambiri zopitilira 20%) zimapanga sikelo yoteteza, yokhazikika ya chromium oxide (Cr₂O₃) yomwe imakana kuwonongeka mumlengalenga wotulutsa okosijeni ndi sulfidizing.
Kukaniza Kutopa Kwapamwamba Kwambiri: Amatha kupirira kutentha ndi kuziziritsa mobwerezabwereza popanda kusweka, chinthu chofunikira kwambiri pazinthu monga ma turbine vanes.
Kuchita kwa cobalt superalloys kumachokera ku njira zingapo zofunika:
Kulimbitsa-Solution Kulimbitsa: Zinthu monga tungsten (W) ndi molybdenum (Mo) zimasungunuka mu cobalt matrix, zomwe zimalepheretsa kusuntha.
Mpweya wa Carbide: Kupangidwa kwa ma carbides olimba (mwachitsanzo, Cr₇C₃, Cr₂₃C₆, WC, TaC) mu microstructure kumapereka kukana kwakukulu kwa kukwawa ndi kuvala. Kukula, mtundu, ndi kugawa kwa ma carbides awa ndizofunikira kwambiri pakugwira ntchito.
Cobalt Allotropy: Cobalt imasintha magawo ikatenthedwa, ndipo izi zimagwiritsidwa ntchito kupititsa patsogolo katundu kudzera pakuchiza kutentha komanso kukonza makina a thermo.
Ma superalloys opangidwa ndi Cobalt ndi ofunikira pakugwiritsa ntchito pomwe kulephera sikungatheke.
Ma Aerospace & Power Generation Turbines: Amagwiritsidwa ntchito pazinthu zosasunthika monga:
Turbine Vanes & Nozzle Guide Vanes: Kumene kutentha kwambiri kwa gasi kumakumana ndi kukana kwamphamvu ndikofunikira.
Industrial Wear Components: Maziko a aloyi a Stellite™, omwe amagwiritsidwa ntchito pa:
Ma Valve Seats & Chepetsani mu ma valve othamanga kwambiri, otentha kwambiri.
Mawaya Olimba & Ndodo kuti azivala zowoneka bwino pazida ndi makina.
Manja a Pampu, Mipingo, ndi Mipeni Yodulira.
Implants Zachipatala: Zomwe zimagwiritsidwa ntchito m'mafupa a mafupa (makamaka pazitsulo zokhala ndi zitsulo) chifukwa cha biocompatibility yawo yabwino, kukana kuvala, ndi kukana dzimbiri m'thupi la munthu.
Gome lotsatirali likufotokoza mwachidule zinthu zofunika kuziwona mwachangu:
| Mbali | Kufotokozera | Ubwino |
| Base Element | Cobalt (Co), yokhala ndi Chromium (Cr) yapamwamba. | Amapereka matrix ofunikira pakutentha kwambiri komanso kukana dzimbiri. |
| Olimbikitsa Ofunika | Tungsten (W), Molybdenum (Mo), ndi Carbon (C) kuti apange carbide. | Amapereka mphamvu zotentha kwambiri, kukana kukwawa, komanso kukana kuvala. |
| Kutentha kwa Ntchito | Okwera kwambiri, opambana kuposa 1000°C (1832°F). | Imathandiza kuti injini ikhale yachangu komanso yogwira ntchito m'malo ovuta kwambiri. |
| Zofunika Kwambiri | Kutentha Kwambiri, Kukaniza kwa Creep, Kuvala & Kukaniza kwa Corrosion. | Kuphatikiza kwapadera kwa mikhalidwe yovuta kwambiri yautumiki. |
| Mafomu Wamba | Zida zoponya, mbale/mbale yopangidwa, ufa wa HIP, ma aloyi olimba. | Kupanga kosunthika pamagawo onse ovuta okhala pafupi ndi ukonde komanso zokutira zoteteza. |
| Makampani Oyamba | Azamlengalenga, Mphamvu Generation, Medical, Chemical & Petrochemical. | Zosankha zomwe kutentha kwambiri ndi kuvala zimayenderana. |
Mwachidule, Cobalt-Based Superalloys ndi zida za niche koma zofunikira zomwe zimakankhira malire a uinjiniya wotentha kwambiri. Ngakhale kuti nthawi zambiri zimakhala zokwera mtengo komanso zowonda kwambiri kuposa ma nickel superalloys, ntchito yawo yosayerekezeka m'madera ena-makamaka mphamvu ya kutentha kwambiri, kutopa kwa kutentha, ndi kukana kuvala-amateteza gawo lawo lofunika kwambiri pa zamakono zamakono.