Large mpukutu kanasonkhezereka waya kanasonkhezereka wosanjikiza ndondomeko mapangidwe

The mapangidwe ndondomeko yotentha kuviika kanasonkhezereka wosanjikiza ndi pakati chitsulo masanjidwewo ndi kunja kwa koyera nthaka wosanjikiza, mapangidwe chitsulo-zinki aloyi ndondomeko, workpiece pamwamba pa kutentha kuviika plating pamene mapangidwe chitsulo-zinki aloyi wosanjikiza, kotero kuti chitsulo ndi zinc wosanjikiza koyera zimaphatikizidwa bwino.The ndondomeko lalikulu mpukutu kanasonkhezereka waya akhoza kungoti: pamene chitsulo workpiece kumizidwa mu osungunuka nthaka madzi, woyamba nthaka ndi α-chitsulo (thupi pakati) olimba Sungunulani aumbike pa mawonekedwe.Uwu ndi kristalo wopangidwa ndi chitsulo chachitsulo cha matrix chosungunuka ndi maatomu a zinki pamalo olimba.Ma atomu awiri achitsulo amasakanikirana wina ndi mzake, ndipo kukopana pakati pa maatomu kumakhala kochepa.

Chifukwa chake, zinc ikafika pakusungunuka mu kusungunuka kolimba, zinthu ziwiri za zinki ndi maatomu achitsulo zimafalikira wina ndi mnzake, ndipo maatomu a zinki amagawika mu (kapena kulowetsedwa) mu matrix achitsulo amasuntha mu lattice ya matrix ndipo pang'onopang'ono amapanga aloyi. ndi chitsulo, pamene chitsulo chimalowa mu madzi osungunuka a zinki amapanga intermetallic pawiri FeZn13 ndi zinki ndipo amamira pansi pa mphika wotentha wamalata, ndiko kuti, zinki slag.Pamene workpiece imachotsedwa ku zinki leaching solution, pamwamba pazitsulo zoyera za zinki zimapangidwa, zomwe zimakhala ndi hexagonal crystal, ndipo chitsulo chake sichiposa 0.003%.

Hot dip galvanizing, yomwe imadziwikanso kuti hot dip galvanizing, ndi njira yopezera wosanjikiza wachitsulo pomiza membala wachitsulo muzitsulo zosungunuka za zinki.Ndi chitukuko chofulumira cha magetsi othamanga kwambiri, zoyendetsa ndi kulankhulana, zofunikira zachitetezo pazigawo zachitsulo zikukwera kwambiri, ndipo kufunikira kwa galvanizing otentha akuwonjezeka.Kawirikawiri makulidwe a electrogalvanized wosanjikiza ndi 5 ~ 15μm, ndi lalikulu mpukutu kanasonkhezereka waya wosanjikiza zambiri kuposa 35μm, kapena mpaka 200μm.Kutha kuviika kwamakabati ndikwabwino, zokutira wandiweyani, palibe organic inclusions.

Monga tonse tikudziwa, limagwirira kukana dzimbiri mumlengalenga zinki zikuphatikizapo makina chitetezo ndi electrochemical chitetezo.Pansi pakuwonongeka kwamlengalenga, pali ZnO, Zn(OH)2 ndi filimu yoteteza zinc carbonate pamwamba pa nthaka wosanjikiza, yomwe imachepetsa kuwonongeka kwa nthaka.Filimu yotetezayi (yomwe imatchedwanso kuti dzimbiri loyera) ikawonongeka, filimu yatsopano idzapangidwa.

Pamene nthaka wosanjikiza kwambiri kuonongeka ndi pangozi chitsulo masanjidwewo, nthaka kutulutsa electrochemical chitetezo pa masanjidwewo, mphamvu muyezo nthaka -0.76V ndi kuthekera muyezo chitsulo -0.44V.Pamene zinki ndi chitsulo zimapanga ma microbattery, zinki idzasungunuka ngati anode, ndipo chitsulo chidzatetezedwa ngati cathode.Mwachiwonekere, kukana kwa mlengalenga kwa kutentha kwa dip dip galvanizing ndikobwinoko kuposa kuyatsa kwamagetsi.