| APEX ADVANCED TECHNOLOGIES, LLC Patent applications |
| Patent application number | Title | Published |
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| 20100028194 | Method For Protecting Powder Metallurgy Alloy Elements From Oxidation And/Or Hydrolization During Sintering - A method for protecting powder metallurgy alloy elements from oxidation and/or hydrolyzation during sintering. The method includes (1) coating the admixed alloy elements in an inert (e.g., nitrogen) atmosphere with a hydrophobic lubricant that is capable of becoming mobile during pressing, the amount of lubricant being at least 45% of the total volume of all components to be added to the base metal powder; (2) mixing the lubricant-coated admixed alloy elements with the base metal powder to form a mixture; (3) pressing the mixture to form a pre-sintered part having a green density that is from about 95% to about 98% of a calculated pore-free density; and (4) sintering the part. | 02-04-2010 |
| 20090162236 | Powder Metallurgy Methods And Compositions - The present invention provides metal powder compositions for pressed powder metallurgy and methods of forming metal parts using the metal powder compositions. In each embodiment of the invention, the outer surface of primary metal particles in the metal powder composition is chemically cleaned to remove oxides in situ, which provides ideal conditions for achieving near full density metal parts when the metal powder compositions are sintered. | 06-25-2009 |
| 20090028742 | DRY POWDER METAL COMPOSITIONS AND METHODS OF MAKING AND USING THE SAME - The present invention provides powder metal compositions and methods of making and using the same. Powder metal compositions according to the invention are substantially dry and include a blend of base metal particles and a pressing aid. The pressing aid includes a micronized deformable solid material and a high melt point lubricating material, which have been pre-mixed or co-ground with each other. Powder metal compositions according to the present invention are particularly useful in applications where the pre-sintered density of the pressed metal part is less than or equal to about 6.9 g/cm | 01-29-2009 |
