Additive manufacturing of composite materials with composition gradient

An article of manufacture, comprising:

• a substrate having a surface and composed of a metal or metal alloy;
• and
• multiple layers of composite materials deposited on the surface of the substrate, the composite materials being composed of the metal or metal alloy and a ceramic material, wherein:
• the individual composite materials at each of the multiple layers has a composition with a corresponding ratio between the metal or metal alloy material and the ceramic material;
• and
• the ratios between the metal or metal alloy material and the ceramic material varies along at least one dimension of the article of manufacture.

An article of manufacture, comprising:

• a composite structure having a first end and a second end opposite the first end along a direction, wherein:
• the composite structure is composed of a first composite material of a metal or metal alloy and a ceramic material at a first percentage value of the ceramic material in the first composite material;
• the composite structure is composed of a second composite material of the same metal or metal alloy and the same ceramic material at a second percentage value of the ceramic material in the second composite material;
• and
• the composite structure has a composition gradient between the first and second percentage values of the ceramic material along the direction of the composite structure.