High temperature cementitious coatings with improved corrosion resistance and methods of application

摘要

A high temperature protective coating with improved corrosion resistance and method of application for fast setting magnesium oxide, fly ash and other finely divided mineral aggregates with ammonium phosphates in aqueous solution, wherein the composition of the phosphates is at least about 20% by weight polyphosphates, balance orthophosphate, and allowing the sprayed mixture to set at more than two mils thickness.