Guud ahaan, dusha iyo dhamaadka wejiga giraanta kowaad waa chrome-plated, iyo siddooyinka kale ee piston sidoo kale waxay noqon karaan chrome-plated. Matoorka naaftada badda ee waaweyn giraanta piston ma aha-chrome-plated, iyo liners cylindered yihiin chrome-plated. Waqtigan xaadirka ah, giraanta piston-ka ee dahaarka ah ee chrome-ceramic composite ayaa la sameeyay, imtixaankuna wuxuu muujinayaa in qadarka xidhashada uu ka yar yahay kala badh giraanta piston-ka ee chrome-plated, iyo xaddiga xidhashada ee xadhkaha dhululubada u dhiganta ayaa sidoo kale la dhimay.

Lakabka lagu buufiyo molybdenum ayaa ka fiican xidhashada iska caabbinta, koobi karayn iyo iska caabin dhululubo oo adkaysi leh marka loo eego dahaarka chrome. Xadhkaha birta ah ee birta ah ee Chrome-ka ah iyo giraanta piston-ka molybdenum-buufisku waxay samayn karaan lammaane is khilaafsan.

Lakabyada adag ee sida caadiga ah loo isticmaalo giraanta piston waa aluminium oxide, titanium oxide iyo chromium oxide, inta badan daahan aluminium titanate.

Habka galitaanka ion wuxuu isku daraa walxo kiimiko ah oo la xushay xidhmo dhexda xayndaabka dhululubada iyo sagxadaha giraanta piston. Lakabka ion ee la isku duray waxaa lagu dhex milmay dusha sare ee xayndaabka dhululubada iyo giraanta piston, waxayna wax yar ku leedahay qallafsanaanta dusha sare iyo saxnaanta cabbirka. Inta badan waxaa jira lakabka faafinta balaasmaha ee TiN, ion dusha sare ee CrN filim adag, carburizing dhul ion dhif ah iyo wixii la mid ah. Tijaabooyinku waxay muujinayaan in deminta iyo dabcinta giraanta piston-ka ka dibna nitrid oogada ion-yada dhifka ah ee dhulku ay si weyn u wanaajin karto iska caabbinta xidhashada giraanta piston oo ay si weyn u dheerayn karto nolosha adeeggeeda.

Daawaynta sifaynta dusha sare waa in si kiimiko ah loo sameeyo filim ka samaysan bir oogada sare ee birta, birta iyo walxaha birta budada ah si ay u ciyaaraan door is saliidayn ah. Inta badan waxa jira samaynta filimka daawaynta fosfatinta uumiga iyo samaynta filimka daawaynta oksaydhaynta alkaline, kuwaas oo loo isticmaalo daalacashada giraangiraha piston-ka iyo matoorada gubashada gudaha ee yaryar. Intaa waxaa dheer, nitriding dareere ah iyo nitriding jilicsan ayaa sidoo kale wanaajin kara caabbinta xirashada ee xargaha dhululubada birta.

Iska caabbinta xirashada ee lammaanaha is-jiidhka ah waxaa saameeya arrimo kala duwan, sidaas darteed dusha sare ayaa si sii kordheysa loogu daaweeyaa iska caabin badan oo xiran. Tusaale ahaan: dabka xalinta iyo baaruudka, carburizing demin iyo sulfurizing, nitriding jilicsan iyo sulfurizing, nitroxide iyo isku dhafka chrome plating iyo molybdenum buufinta.