METHOD OF SINTERING ELECTRICALLY CONDUCTING POWDERS AND AN APPARATUS FOR CARRYING OUT SAID METHOD
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United States of America Patent
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Feb 19, 2017
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Feb 19, 2016
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Abstract
A method of sintering electrically conducting powders in an air atmosphere for obtaining a sintered product includes the following step sequence: placing the powders in an electrically isolating mold, applying a pressure to the powders between 100 and 500 MPa, and applying to the powders a sintering current at a sintering voltage during a sintering time, for sintering the powders. Before applying the sintering current density to the powders, an activation current density is lower than the sintering current density at an activation voltage greater than the sintering voltage during an activation time lower than the sintering time, to reduce the electrical resistance of the powders.
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