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US 12,729,419 B2Granted
Fe-based alloy and alloy powder
AssigneesKolon Industries, Inc., Attometal Tech Pte. Ltd.
InventorChoongnyun Paul Kim
Life of this patent
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Abstract
Fe-based alloy and alloy powder obtainable therefrom according to one aspect of the present invention comprise iron (Fe), chromium (Cr), molybdenum (Mo), and niobium (Nb), and, may contain, relative to 100 wt % of iron, 17.22-58.23 wt % chromium, 1.2-26.1 wt % molybdenum, and 0.12-6.22 wt % niobium.
Claims5
An iron-based alloy comprising:
- per 100 parts by weight of iron (Fe),
- 30 to 58.23 parts by weight of chromium (Cr);
- 1.20 to 26.10 parts by weight of molybdenum (Mo);
- 0.12 to 6.22 parts by weight of niobium (Nb);
- 0.12 to 6.63 parts by weight of boron (B);
- 0.12 to 3.61 parts by weight of carbon (C);
- and
- unavoidable impurities,
- wherein a weight ratio of chromium to molybdenum (Cr/Mo) is from 3 to 5,
- wherein the iron-based alloy further includes alpha-iron (α-Fe) having an amorphous phase and a body-centered cubic (BCC) crystal structure,
- wherein the iron-based alloy is formed into a powder, and
- wherein the powder exhibits a weight gain ratio of 1.5% or less when heated from room temperature to 1200° C.
9 more elements
An iron-based alloy powder comprising:
- per 100 parts by weight of iron (Fe),
- 30 to 58.23 parts by weight of chromium (Cr);
- 1.20 to 26.10 parts by weight of molybdenum (Mo);
- 0.12 to 6.22 parts by weight of niobium (Nb);
- 0.12 to 6.63 parts by weight of boron (B);
- 0.12 to 3.61 parts by weight of carbon (C);
- and
- unavoidable impurities,
- wherein a weight ratio of chromium to molybdenum (Cr/Mo) is from 3 to 5,
- wherein the iron-based alloy further includes alpha-iron (α-Fe) having an amorphous phase and a body-centered cubic (BCC) crystal structure,
- wherein the powder exhibits a weight gain ratio of 1.5% or less when heated from room temperature to 1200° C., and
- wherein the powder comprises an amorphous phase.
9 more elements
An iron-based alloy powder comprising:
- per 100 parts by weight of iron (Fe),
- 30 to 58.23 parts by weight of chromium (Cr);
- 1.20 to 26.10 parts by weight of molybdenum (Mo);
- 0.12 to 6.22 parts by weight of niobium (Nb);
- 0.12 to 6.63 parts by weight of boron (B);
- 0.12 to 3.61 parts by weight of carbon (C);
- either or both of (i) 40 to 80 area % of an iron-based boride or a chromium-based boride, and (ii) a solid solution formed by dissolving the molybdenum or the niobium with the iron;
- and
- unavoidable impurities,
- wherein a weight ratio of chromium to molybdenum (Cr/Mo) is from 3 to 5,
- wherein the iron-based alloy further includes alpha-iron (α-Fe) having an amorphous phase and a body-centered cubic (BCC) crystal structure,
- wherein the powder exhibits a weight gain ratio of 1.5% or less when heated from room temperature to 1200° C., and
- wherein the powder comprises an amorphous phase.
10 more elements
Dependencies are inferred from the claim text.