Ndi zifukwa ziti za mtima wakuda wa njerwa zaumbali?

Mtima wakuda ndi chodabwitsa chomwe chimapezeka mosavuta popanga njerwa zotsutsa. Makhalidwe a njerwa yamtunduwu ndi awa: mtundu wa pamwamba pa njerwa umasintha pang’onopang’ono, kuchokera ku chikasu chobiriwira pamtunda kupita ku imvi-wakuda mkati. Ngati njerwa yamtundu wakuda ngati iyi iwerengedwanso m’malo okhala ndi oxidizing, gawo lapakati lakuda litha kuwotchedwanso kukhala loyera.

Ma oxides odetsedwa kwambiri mu njerwa ndi iron oxide ndi titaniyamu oxide. Zitha kuganiziridwa kuti njerwa yakuda yakuda imakhala yoyera ikawotchedwanso mumlengalenga wa oxidizing, zitha kuwoneka kuti mlengalenga wowotcha komanso ma oxide osayera achitsulo ndi titaniyamu ndizomwe zimapangidwira ma cores akuda. Komabe, chitsulo ndi titaniyamu oxides zikakhala pamodzi kapena kukhalapo zokha, zimakhala ndi zotsatira zosiyana pa mtundu wa njerwa zomangira. Pamene titaniyamu ion ilipo yokha, mtundu wake siwofunika, ndipo thupi la njerwa limakhala la buluu pang’ono, pamene ayoni yachitsulo ikakhala yokha, thupi la njerwa limakhala lofiirira-lalanje.

Zomwe zili pamwambazi ndi chifukwa chake njerwa zokanira zimatulutsa zida zakuda. Kuphatikiza apo, ngakhale mumlengalenga wokhala ndi oxidizing, utoto ndi sintering wa aluminiyamu ukhoza kukulitsanso ma cores akuda. Pakupanga, ndikofunikira kuyang’anira kukonzekera kwa zinthu zopangira, kuwongolera kutentha ndi kutentha, kuchepetsa mwayi wamavuto amtima wakuda.