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Ambient temperature method for increasing the green strength of parts and articles made by consolidating powder, particulate, sheet or foil materials

A room temperature, particle technology, applied in the field of net size molding or near net size molding products

Inactive Publication Date: 2000-02-09
MATERIALS INNOVATION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the temperature limitations of the equipment used to spray materials onto substrates that cannot be high enough to liquefy certain materials, such as copper, there are limitations to the types of materials that can be deposited by thermal spraying techniques and the types of end products

Method used

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  • Ambient temperature method for increasing the green strength of parts and articles made by consolidating powder, particulate, sheet or foil materials
  • Ambient temperature method for increasing the green strength of parts and articles made by consolidating powder, particulate, sheet or foil materials
  • Ambient temperature method for increasing the green strength of parts and articles made by consolidating powder, particulate, sheet or foil materials

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Embodiment Embodiment 1

[0052] Although the invention is described in more detail in connection with specific preferred embodiments in the following examples, it should be understood that the invention is not limited to such specific embodiments. This is merely an example given of alternatives, modifications and equivalents that are included within the scope of the invention as defined by the claims. Thus, the following examples containing preferred embodiments are mainly to illustrate the practice of the present invention, and it should be understood that the purpose of these specific descriptions by way of examples is only to illustrate and discuss the preferred embodiments of the present invention, and to provide the most useful and the most understandable description of the method as well as the principles and concepts of the invention. EXAMPLES Example 1 Copper-clad aluminum

[0053] 99.99% aluminum powder (HP601, AMPEL, Palmerton, PA) was coated with approximately 31% by weight of copper using...

Embodiment 5

[0063] Repeat the above steps without adding fluoroboric acid solution to obtain sample H. Embodiment 5 copper-clad aluminum

[0064] 99.99% aluminum powder (HP601, AMPEL, Palmerton, PA) was coated with approximately 31% by weight copper using the centrifugal bed coating method described above. The coating method uses a 99.99% deoxidized copper anode and a pyrophosphate based electrolyte. The aluminum powder is screened to have a particle size between 60-150 microns. 2 grams of the sieved powder was mixed with an aqueous activation solution consisting of 10 ml of 100% acetic acid, 5 ml of 98% sulfuric acid and 85 ml of water to form a slurry. The excess acid was decanted and the resulting slurry was placed in a 0.5 inch mold consisting of a set of cylindrical plungers and corresponding female moulds. The mold can be floated and the slurry is pressed through a hand press (DAKE50H) to obtain a 100% densified sample I with a density of 3.964 g / cc at 200 Ksi pressure.

[0065]...

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Abstract

The present invention relates to a process for consolidating powder, particulates, foils or sheets of metal coated composites, elemental metallic or metallic alloy or intermetallic compounds into net shapes having increased green strength at or near ambient temperature comprises treating the material with an aqueous activation solution. The aqueous activation solution is selected from dilute acids, reducing agents, molten salt electrolytes and mixtures thereof. Pressure is used to consolidate the treated powders, particulates, foils or sheets into a net shape at or near ambient temperature.

Description

[0001] This application is a continuation-in-part of US Patent Application No. 08 / 317,729, filed October 4, 1994 (hereby incorporated by reference in its entirety). No. 08 / 317,729 is a continuation-in-part of US Patent Application No. 08 / 133,316 (filed October 8, 1993, now abandoned). No. 08 / 133,316 is a continuation-in-part of US 5,318,746 issued on June 7, 1994 to US Patent Application No. 07 / 802,420 (filed on December 4, 1991). field of invention [0002] The present invention relates to the compaction of powders, granules, continuous fibers, foils or sheets of metals, metal alloys, metal-clad materials and intermetallic materials into net or near net shapes The method of the product. More particularly, the present invention relates to methods and activation solutions for compacting these materials at room temperature to form trimmed or near trimmed parts or articles of higher green strength. In applications, the method and activation solution can be used to compact mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/02A61K6/04B22F1/145B22F1/17B22F1/18B22F3/22C22C1/04C22C1/10C22C47/00C22C47/14C23C30/00
CPCB22F3/22B22F3/225C22C1/0466C22C47/14B22F2998/00C22C47/00C22C1/10A61K6/046B22F1/025C23C30/00B22F1/0088A61K6/0008A61K6/17A61K6/844B22F1/145B22F1/17B22F1/18
Inventor D·S·拉什默尔G·L·比恩L·德里什
Owner MATERIALS INNOVATION INC
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