I’m sorry, but the chemical equation you provided is not valid.
“Cr2O3” is Chromium(III) oxide, “Sg” is not the symbol of a recognized chemical element in the periodic table of chemical elements. Therefore, there can be no chemical reaction between “Cr2O3” and “Sg”. Similarly, “CrSgO3” is also not a valid chemical compound formula.
Please provide the correct chemical equation so that we can provide detailed information about it, the conditions of the reaction, the reaction process, and the phenomena that occur.