Zviri mukati meCr neC zvinokanganisa sei kuramba kwekupfekwa kwemaplate asingapfeki?

Kabhoni ndiyo chinhu chikuru pakuumbwa kwemakabhoni. Kana paine Cr, kabhoni inosanganiswa nekromium kugadzira makromium carbides (Cr₇C₃, Cr₃C₂, nezvimwewo). Kana kabhoni yakakwira, huwandu hwekabhoni hwakawedzera, nokudaro zvichivandudza kuomarara kwechinhu chacho uye kuramba kupfeka.

Chromium chinhu chakakosha pakuumbwa kwemakabhoridhi akaomarara akasimba, uye inewo kugadzikana kwakanaka pakupisa kwepamusoro uye kuramba kuoxidation. Muhurongwa hweCr-high, makristaro echromium carbide anokura ari columnar uye akarongeka akatarisana nekwakapfekwa, izvo zvinobatsira kudzivirira kukwenya uye kupera simba. Pamusoro pezvo, Cr inogonawo kuita basa mukunatswa kwezviyo mumuchina we weld uye kuvandudza huwandu hwesangano.

Mukugadzira, huwandu hweCr hunowanzo dzorwa pa18% ~ 30%, uye huwandu hweC huri pakati pe3% ~ 5%. Chiyero ichi chinogona kugadzira huwandu hwakawanda hwemacarbides emhando yeCr₇C₃ akapararira zvakaenzana ane kuomarara kwakanyanya uye kushaya kusimba kwakaderera, zvichivandudza hupenyu hwebasa rechinhu ichi pasi pemamiriro ekumanikidzwa kwakanyanya uye ane simba rakawanda.