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US 12,759,041 B2Granted
Spherical niobium alloy powder, products containing the same, and methods of making the same
AssigneeGlobal Advanced Metals USA, Inc.
InventorsCraig M. Sungail, Aamir Dawood Abid
Life of this patent
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Abstract
Niobium alloy powder that is highly spherical is described. The niobium alloy powder can be useful in additive manufacturing and other uses. Methods to make the niobium alloy powder are further described as well as methods to utilize the niobium alloy powder in additive manufacturing processes. Resulting products and articles using the niobium alloy powder are further described.
Claims25
Niobium alloy powder comprising
- a. a spherical shape wherein the powder has an average aspect ratio of from 1.0 to 1.25;
- b. a purity of niobium alloy of at least 99.99 wt % Nb-alloy based on total weight of said niobium alloy powder, excluding gas impurities;
- c. an average particle size of from about 0.5 micron to about 250 microns;
- d. an apparent density from about 2 g/cc to about 18 g/cc;
- e. a true density of from 8.2 g/cc to 20 g/cc;
- and
- f. a Hall flow rate of 20 sec or less, wherein
- said niobium alloy powder is a Nb alloy that contains Nb and two or more other metals to form said niobium alloy powder,
- the niobium metal is present at a highest percent based on the weight of the niobium alloy powder, and
- a wt % of the two or more other metals is from 0.1 wt % to 70 wt %, based on the total weight of the niobium alloy powder;
- and wherein the two or more other metals must be and only can be Ti, W, Mo, Re, Rh, Ta, V, Th, Zr, Hf, Cr, Mn, Sc, Y, Ni, Fe, Co, Al, Sn, Au, Th, U, Pu, and rare earth elements, and, optionally, a wt % of metals other than the two or more other metals and the Nb is less than 0.1 wt %.
8 more elements
Niobium alloy powder comprising
- a. a spherical shape wherein the powder has an average aspect ratio of from 1.0 to 1.25;
- b. a purity of niobium alloy of at least 99.99 wt % Nb-alloy based on total weight of said niobium alloy powder, excluding gas impurities;
- c. an average particle size of from about 0.5 micron to about 250 microns;
- d. an apparent density from about 2 g/cc to about 18 g/cc;
- e. a true density of from 8.2 g/cc to 20 g/cc;
- and
- f. a Hall flow rate of 20 sec or less, wherein
- said niobium alloy powder is a Nb alloy that contains at least 65.5 wt % Nb, based on the total weight of the niobium alloy powder, and two or more other metals to form said niobium alloy powder;
- and wherein said niobium alloy powder has an oxygen level of less than 400 ppm, an oxygen in ppm to BET in m2/g ratio is from 2,000 to 4,000, and the two or more other metals are selected from Ti, W, Mo, Re, Rh, Ta, V, Th, Zr, Hf, Cr, Mn, Sc, Y, Ni, Fe, Co, Al, Sn, Au, Th, U, Pu, and rare earth elements.
6 more elements
Dependencies are inferred from the claim text.