Umubyimba wo gusiga irangi

Urebye kuri microscopique, hariho ibinogo byinshi mubitwikiriye, kandi ubunini bwa pinholes burahagije kugirango itangazamakuru ryangirika (amazi, ogisijeni, ion ya chloride, nibindi) ryinjira muri substrate, kandi u nder runaka ugereranije n'ubushuhe, ibintu byangirika bibaho.Umubyimba mwinshi, pinhole nkeya, kandi nibyiza kurwanya ruswa ya substrate.Nkuko bigaragara ku gishushanyo, ubunini butandukanye bwo gutwikira bugira ingaruka ku kurwanya ruswa.Ibisubizo by'ibizamini byerekana ko iyo umubyimba wuzuye uri hejuru ya 20 mm, ingaruka zo kurwanya ruswa zirahagaze neza.

Kurinda igifuniko:

Ubwiza bwo gutwika no gutunganya nabyo bigira ingaruka kumurwanya wanyuma wibicuruzwa bitwikiriye amabara.Niba urumuri rukozwe mu isahani ikonje ikonje (utabariyemo no gusya) kuri MCL mu buryo butaziguye, bitewe n’ibicuruzwa byangirika byibyuma byoroshye kwinjirira mu buryo bworoshye, kandi nta n’uburinzi bwa kabiri, bityo umuvuduko wacyo wihuta vuba, niba umubyimba mwinshi wa zinc galvanised (aluminium plaque zinc / aluminium magnesium) substrate, irashobora kugira uruhare rwa "firewall", bizamura cyane kurwanya ruswa yibicuruzwa.