Additive manufacturing of functionally gradient degradable tools
AssigneeBaker Hughes, A Ge Company, LLC
InventorsJohn C. Welch, Zhiyue Xu, James Andy Oxford
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Abstract
A method of manufacturing an article comprises depositing a metallic powder on a substrate or a worktable; fusing the metallic powder according to a preset pattern; and adjusting a composition of the metallic powder or a condition to fuse the metallic powder or a combination thereof to additively form an article such that the article has a first portion and a second portion, wherein the first portion has one or more of the following properties different than those of the second portion: corrosion rate; tensile strength; compressive strength; modulus; or hardness.
Claims19
A method of manufacturing an article, the method comprising:
- depositing a metallic powder on a substrate or a worktable;
- fusing the metallic powder according to a preset pattern;
- and
- adjusting a composition of the metallic powder or a condition to fuse the metallic powder or a combination thereof to additively form an article such that the article has a first portion and a second portion, wherein the first portion has one or more of the following properties different than those of the second portion:
- corrosion rate;
- tensile strength;
- compressive strength;
- modulus;
- or hardness,
- wherein the metallic powder comprises a coated particle having a particle core with a nanoscale coating disposed thereon, the nanoscale coating having a melting point different than a melting point of the particle core.
A method of manufacturing an article, the method comprising:
- depositing a metallic powder on a substrate or a worktable;
- fusing the metallic powder according to a preset pattern;
- and
- adjusting a composition of the metallic powder or a condition to fuse the metallic powder or a combination thereof to additively form an article such that the article has a first portion and a second portion, wherein the first portion has one or more of the following properties different than those of the second portion:
- corrosion rate;
- tensile strength;
- compressive strength;
- modulus;
- or hardness;
- wherein the metallic powder comprises an uncoated metallic matrix particle and a second particle;
- the metallic matrix particle comprising one or more of the following:
- a magnesium-based alloy;
- an aluminum-based alloy;
- or a zinc-based alloy;
- and
- the second particle comprising one or more of the following:
- a metal;
- an oxide of the metal;
- a nitride of the metal;
- or a cermet of the metal;
- wherein the metal is W;
- Co;
- Cu;
- Ni;
- or Fe.
Dependencies are inferred from the claim text.