Ceramic nanocomposite material and method of manufacturing thereof

A method for manufacturing a ceramic nanocomposite, comprising:

• receiving a fired green ceramic body comprising ceramic matrix;
• introducing to the fired green ceramic body submicron particles, having coefficient of thermal expansion lower than the coefficient of thermal expansion of the ceramic matrix;
• and
• introducing at least one type of location-controlling dopant at an amount that is sufficient to cover the majority of the ceramic matrix grain boundaries.

A ceramic nanocomposite comprising:

• a ceramic matrix with submicron particles dispersed in the ceramic matrix;
• the submicron particles have a coefficient of thermal expansion greater than the coefficient of thermal expansion of the ceramic matrix, and
• at least one dopant that covers the majority of the ceramic matrix grain boundaries, at a concentration that does not exceed the bulk solubility limit of the dopant in the ceramic matrix at the ceramic nanocomposite sintering temperature;
• wherein a majority of the submicron particles are located at the ceramic matrix grain boundaries.

A ceramic nanocomposite comprising:

• a ceramic matrix with submicron particles dispersed in the ceramic matrix;
• the submicron particles have a coefficient of thermal expansion lower than the coefficient of thermal expansion of the ceramic matrix;
• and
• at least one dopant that covers the majority of the ceramic matrix grain boundaries, at a concentration that does not exceed the bulk solubility limit of the dopant in the ceramic matrix at the ceramic nanocomposite sintering temperature, and
• wherein a majority of the submicron particles are occluded in the ceramic matrix grains.