Hlau oxides Siv nyob rau hauv High-temperature-kho coatings

Txheem daj hlau oxides yog qhov zoo tshaj plaws inorganic pigments los tsim ntau yam xim ntxoov ntxoo vim qhov zoo ntawm kev ua tau zoo thiab tus nqi yog muab los ntawm lawv lub zog zais siab thiab opacity, huab cua zoo heev, lub teeb thiab tshuaj lom neeg ceev ceev, thiab txo tus nqi. Tab sis lawv siv nyob rau hauv high-temperature-kho coatings xws li coil txheej, hmoov txheej los yog cov xim pleev xim yog txwv. Vim li cas?

Thaum cov hlau oxide daj xa mus rau qhov kub siab, lawv cov qauv goethite (FeOOH) dehydrates thiab ib nrab hloov mus rau hauv hematite (Fe2O3), uas yog cov qauv siv lead ua ntawm cov hlau oxide liab. Qhov no yog vim li cas tus qauv daj hlau oxide uas muaj nyob ua ntej kho yuav tsaus thiab xim av.

Qhov kev hloov pauv no tuaj yeem tshwm sim los ntawm qhov kub thiab txias ze rau 160ºC, nyob ntawm lub sijhawm kho, cov txheej txheem khi thiab txheej txheej nws tus kheej.