Described are glass-forming molds made of a graphite mold body and a coating formed by atomic layer deposition, with the coating being made of alumina or a combination of alumina and yttria.

Described are glass-forming molds made of a graphite mold body and a coating formed by atomic layer deposition, with the coating being made of alumina or a combination of alumina and yttria.

A powder useful for making a mold utilized for shaping glass-based materials includes at least about 50% by weight nickel. Metal oxides that are not miscible with nickel may be dispersed within the powder in an amount in a range from about 0.2 to about 15% by volume. A mold made from the powder may have a mold body having a composition comprising at least 50% by weight nickel and a metal oxide that is not miscible with nickel in an amount in a range from about 0.2 to about 15% by volume, a nickel oxide layer on a surface of the mold body wherein the nickel oxide layer has first and second opposing surfaces, the first surface of the nickel oxide layer contacts and faces the surface of the mold body, the second surface of the nickel oxide layer includes a plurality of grains, and the plurality of grains has an average grain size of about 100 m or less.