Patent ID: 8173221
Filing Date: 2012-05-08
Classification: C09D,C23C,C23D,Y10T

Abstract:
1. A process for preparing a metal product having a silicate glass layer, the process comprising: providing a metal or metal alloy having a tightly adhered, prepared oxide layer that has a thickness in a range of about 50 nm to about 10 microns; applying a coating layer having a thickness of less than about 20 microns to the prepared oxide layer, the coating layer comprising an aqueous silicate solution which is stable against gelling; then heating the metal or metal alloy to a temperature in a range of about 200° C. to about 500° C.; and forming an oxide-glass layer that comprises a transitional interface layer and a silicate glass layer and has a thickness in a range of about 0.1 microns to about 10 microns.