Flexible ceramic coatings for metals and methods of making same

A method of forming a ceramic composition based coating on a metal substrate, the method comprising the steps of:

• providing a raw material component mixture;
• applying the raw material component mixture to a metal substrate to form a coated substrate;
• and
• heating the coated substrate to at least 800° Celsius for at least one hour to form a ceramic composition based coating on the metal substrate, wherein the ceramic composition based coating comprises a R2O—SiO2—B2O3 composition comprising:
• between 2 to 30 weight percent R2O, wherein R2O is an alkali metal oxide;
• between 10 to 74 weight percent SiO2;
• and
• between 23 to 79 weight percent B2O3;
• wherein the ceramic composition based coating adheres to the metal substrate.

A method of forming a ceramic composition based coating on a metal substrate, the method comprising the steps of:

• providing a boron nitride bulk paint system, wherein the bulk paint system comprises boron nitride powder;
• providing a metal substrate;
• applying the bulk paint system to the metal substrate to form a painted substrate;
• oxidizing boron nitride from the bulk paint system by heating the painted substrate in an air atmosphere at a temperature of at least 800° Celsius for at least one hour;
• and
• forming a coating on the metal substrate, wherein the coating comprises a R2O—SiO2—B2O3 composition, and wherein R2O is an alkali metal oxide.

A bulk paint system comprising water, a suspender, and raw materials derived from precursors of alkali oxides, silica, and boron oxide, wherein the bulk paint system after heating to at least 800° Celsius for at least one hour forms a coating comprising a R2O—SiO2—B2O3 composition comprising:

• between 2 to 30 weight percent R2O, wherein R2O is an alkali metal oxide;
• between 10 to 74 weight percent SiO2;
• and
• between 23 to 79 weight percent B2O3.