Mapangidwe a zitsulo ndi makulidwe a filimu ya passvatation

Passtivation imafotokozedwa ngati mapangidwe a chosanjikiza chotchinga chotchinga pamwamba pazinthu zachitsulo zomwe zimagwiritsidwa ntchito ndi ontodic polarization, kuti tilepheretse kuwonongedwa. Zitsulo zina kapena zowonjezera zimapangitsa kuti pakhale losavuta pa chiwonetsero chothandizira kapena pansi pa ododic polarization, potero kuchepetsa kuchuluka kwa kuwonongeka. Malinga ndi tanthauzo la pambale, izi sizikuchitika.

Kapangidwe ka kanema wa passtivation ndi woonda kwambiri, wokhala ndi kuchuluka kwa makulidwe kuchokera ku 1 mpaka 10 nanometers. Kuzindikira hydrogen pa kanema woonda wopsa kumawonetsa kuti filimu ya passpoation ikhoza kukhala hydroxide kapena hydrate. Chitsulo (Fe) ndi kovuta kupanga kanema wa pasitepe pansi pa nyengo yamagazi; Zimangochitika m'malo oxidianing kwambiri komanso poyambira ku Andodic polandaza. Mosiyana ndi izi, chromium (cr) imatha kupanga kanema wokhazikika kwambiri, wandiweyani, komanso filimu yoteteza itatu ngakhale pang'ono ma okoma. M'madontho okhala ndi chitsulo chokhazikika chomwe chili ndi chmium, pomwe chromiums zikaposa 12%, imatchedwa chitsulo chosapanga dzimbiri. Chitsulo chosapanga dzimbiri chimatha kukhalabe ndi malo omwe ali ndi vuto lalikulu lomwe lili ndi mpweya. Nickel (ni), poyerekeza ndi chitsulo, sichongokhala ndi mphamvu zabwino (kuphatikizapo mphamvu zapamwamba) komanso zikuwonetsa kukana kovuta kwambiri kuphatikizira kosagwirizana ndi oxidion

Mapangidwe a zitsulo ndi makulidwe a filimu ya passvatation

Passtivation imafotokozedwa ngati mapangidwe a chosanjikiza chotchinga chotchinga pamwamba pazinthu zachitsulo zomwe zimagwiritsidwa ntchito ndi ontodic polarization, kuti tilepheretse kuwonongedwa. Zitsulo zina kapena zowonjezera zimapangitsa kuti pakhale losavuta pa chiwonetsero chothandizira kapena pansi pa ododic polarization, potero kuchepetsa kuchuluka kwa kuwonongeka. Malinga ndi tanthauzo la pambale, izi sizikuchitika.

Kapangidwe ka kanema wa passtivation ndi woonda kwambiri, wokhala ndi kuchuluka kwa makulidwe kuchokera ku 1 mpaka 10 nanometers. Kuzindikira hydrogen pa kanema woonda wopsa kumawonetsa kuti filimu ya passpoation ikhoza kukhala hydroxide kapena hydrate. Chitsulo (Fe) ndi kovuta kupanga kanema wa pasitepe pansi pa nyengo yamagazi; Zimangochitika m'malo oxidianing kwambiri komanso poyambira ku Andodic polandaza. Mosiyana ndi izi, chromium (cr) imatha kupanga kanema wokhazikika kwambiri, wandiweyani, komanso filimu yoteteza itatu ngakhale pang'ono ma okoma. M'madontho okhala ndi chitsulo chokhazikika chomwe chili ndi chmium, pomwe chromiums zikaposa 12%, imatchedwa chitsulo chosapanga dzimbiri. Chitsulo chosapanga dzimbiri chimatha kukhalabe ndi malo omwe ali ndi vuto lalikulu lomwe lili ndi mpweya. Nickel (NI), poyerekeza ndi chitsulo, sichongokhala ndi mphamvu zabwino (kuphatikizapo mphamvu zotentha) komanso zimawonetsa kusintha kwambiri kwa malo osasinthana ndi oxidion. Pamene a Nickel ali pachitsulo kupitirira 8%, imakhazikitsa cubic yokhazikika ya austete, kukulitsa luso lothana ndi kuwongolera ndikuwongolera chitetezero cha kuwonongeka. Chifukwa chake, Chromium ndi Nickel ndi zinthu zokopa kwambiri mu zitsulo. Pamene a Nickel ali pachitsulo kupitirira 8%, imakhazikitsa cubic yokhazikika ya austete, kukulitsa luso lothana ndi kuwongolera ndikuwongolera chitetezero cha kuwonongeka. Chifukwa chake, Chromium ndi Nickel ndi zinthu zofunika kwambiri m'chitsulo.