Ka kakaretso, sefahleho sa bokaholimo le pheletso ea selikalikoe sa pele se entsoe ka chrome-plated, 'me mehele e meng ea piston le eona e ka beoa ka chrome. Masale a maholohali a piston ea enjene ea diesel ea leoatleng ha a na chrome-plated, 'me li-cylinder liner li na le chrome-plated. Hona joale, ho entsoe lesale la piston la chrome-ceramic composite, 'me tlhahlobo e bontša hore chelete ea ho roala e ka tlaase ho halofo ea lesale la piston ea chrome-plated,' me palo ea ho roala ea li-cylinder liner e boetse e fokotsehile.

Molybdenum e fafalitsoeng e na le khanyetso e ntle ea ho roala, ho kopitsoa le ho hanyetsa silinda e thata ho feta ho roala ha chrome. Chrome-plated steel cylinder liner le molybdenum-sprayed piston ring li ka etsa para e ntle ea likhohlano.

Mehato e thata e sebelisoang hangata bakeng sa mehele ea piston ke aluminium oxide, titanium oxide le chromium oxide, haholo-holo aluminium titanate coating.

Mokhoa oa ho kenya ion o kopanya likarolo tsa lik'hemik'hale tse khethiloeng hore e be ngata ka har'a li-cylinder liner le bokaholimo ba lesale la piston. Lera la ion le kentsoeng le kopantsoe le bokaholimo ba cylinder liner le lesale la piston, 'me le na le phello e fokolang holim'a bokaholimo le ho nepahala ha sebopeho. Ho na le haholo-holo plasma plating TiN diffusion layer, ion plating CrN hard film, rare earth ion carburizing joalo-joalo. Liteko li bontša hore ho tima le ho kokobetsa selikalikoe sa piston le ho kenya nitride holim'a li-ion tse sa tloaelehang tsa lefats'e ho ka ntlafatsa haholo ho hanyetsa ha lesale la piston le ho lelefatsa bophelo ba ts'ebeletso ea eona haholo.

Kalafo ea ho tlotsa ka holim'a metsi ke ho theha filimi e kopantsoeng ka lik'hemik'hale holim'a lisebelisoa tsa tšepe, tšepe le phofo ea metallurgy ho bapala karolo ea ho itlotsa. Haholo-holo ho na le sebopeho sa filimi ea kalafo ea mouoane phosphating le sebopeho sa filimi ea alkaline oxidation, e sebelisetsoang ho lamination ea mehele ea piston le li-cylinder liner tsa lienjineri tse nyane tse tukang ka hare. Ntle le moo, nitriding ea metsi le nitriding e bonolo le eona e ka ntlafatsa ho hanyetsa ha li-cylinder liner tsa tšepe.

Ho hanyetsa ho roala ha marang-rang a likhohlano ho angoa ke lintlha tse fapa-fapaneng, kahoo bokaholimo bo ntse bo phekoloa ka ho hanyetsa ka makhetlo a mangata. Mohlala: tharollo ea mollo le sulfurizing, carburizing quenching le sulfurizing, nitriding e bonolo le sulfurizing, nitroxide le motsoako oa chrome plating le molybdenum spray.