US2012132033A1PendingUtilityA1
Metal powder
Est. expiryDec 2, 2026(~0.4 yrs left)· nominal 20-yr term from priority
C22C 33/0207B22F 9/22C22C 33/0285C22C 38/12C22C 38/10
48
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Claims
Abstract
The invention relates to novel pre-alloyed metal powders a method for production and use thereof.
Claims
exact text as granted — not AI-modified1 .- 15 . (canceled)
16 . A process for producing prealloyed metal powders containing the elements iron, cobalt and molybdenum which comprises mixing aqueous metal salt solutions with a precipitate, separating the precipitation product from the mother liquor and reducing the precipitation product to the metal.
17 . The process as claimed in claim 16 , wherein the precipitation product is subjected to a thermal decomposition at from 200° C. to 1000° C. in an oxygen-containing atmosphere prior to the reduction to the metallic alloy powder.
18 . The process as claimed in claim 16 , wherein a saturated aqueous carboxylic acid solution is used as precipitant.
19 . The process as claimed in claim 18 , wherein the aqueous carboxylic acid solution contains solid carboxylic acid in such an amount that the mother liquor after the precipitation is complete is still at least 10% saturated, based on aqueous solution free of metal salt.
20 . The process as claimed in claim 16 , wherein the metal salt solution is introduced into initially charged aqueous carboxylic acid solution.
21 . The process as claimed in claim 16 , wherein the aqueous metal salt solution and carboxylic acid are introduced continuously into a precipitation reactor and a mother liquor containing the precipitation product is continuously taken off.Cited by (0)
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