Answer
Lalacewar jujjuyawar yana faruwa ne lokacin da akwai mitoci mai girma, ƙaramar motsin dangi tsakanin raƙuman ruwan bazara da saman mating. Wannan motsi, haɗe tare da matsi na lamba, ya rushe kariyar oxide mai kariya na kayan (musamman a cikin bakin karfe). Sakamakon ƙarfe-zuwa-karfe lamba yana haifar da walda mai sanyi da tsagewar ƙwayoyin microscopic, wanda sannan oxidize kuma yayi aiki azaman abrasive (sau da yawa yana bayyana azaman foda mai launin ja-launin ruwan kasa don karfe, wanda aka sani da 'kwakwa'). Lokacin zage-zage, ana gano tashin hankali ta wurin ramuka ko sawa musamman a magudanar ruwa. Yana iya haifar da gajiyawar fashewar farawa. Magani sun haɗa da shafa mai mai busasshen fim (kamar $\rubutu{MoS}_2$) ko ƙara preload na bazara don hana motsin dangi.
