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Sintered porous structure and method of making same

A porous body and porosity technology, applied in the field of new sintered porous structure, manufacturing flat thin sheet porous network, flat porous network structure, can solve the problems of sintering difference, not suitable for multi-layer structure, etc.

Inactive Publication Date: 2011-01-12
RGT UNIV OF CALIFORNIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is not suitable for forming multilayer structures due to differences in sintering, as described below

Method used

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  • Sintered porous structure and method of making same
  • Sintered porous structure and method of making same
  • Sintered porous structure and method of making same

Examples

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example

[0100] The following examples are intended to illustrate various aspects of the invention and in no way limit the invention in any way.

[0101] porous stainless steel bed

[0102] Manufactured is a sintered free-standing bed of stainless steel cylindrical sleeve elements. The packed bed was fabricated as follows. Stainless steel 434 (38-45 micron particle size) powder was mixed with acrylic binder (15% by weight in water), polyethylene glycol 6000 and polymethyl methacrylate porogen balls (53-76 micron diameter) in a weight ratio of 10 :3:0.5:1.5 mixed. The mixture was heated and dried, ground and sieved to Figure 12a An image of the sintered structure is provided in . Note that the sleeve shape is provided as a packed bed with a pore size of approximately 1 cm. The sleeve walls are also porous with pore sizes in the range of 20-100 microns. Note that the walls can also be made dense by removing porogen spheres and choosing appropriate metal particle size and sintering ...

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Abstract

Simple, low cost methods of manufacturing highly porous structures are provided. The methods involve building up porous structures with elements shaped to provide the desired strength, porosity and pore structure of the porous structure and then sintering the elements together to form the structure. Also provided are novel sintered porous structures made up of sintered non-spherical elements. In certain embodiments, the shaped green elements and the porous structure are simultaneously sintered. Also provided are novel sintered porous structures made up of sintered non-spherical elements.

Description

[0001] Statement of Government Funding [0002] This invention was made with government support under Contract No. DE-AC02-05CH 11231 awarded by the U.S. Department of Energy to the Regents of the University of California, for the management and operation of the Lawrence-Berkeley National Laboratory. The government has certain rights in this invention. Background technique [0003] Porous structures are used in a wide range of applications from filtration to electrochemical devices. Solid state electrochemical devices such as solid oxide fuel cells are made of porous layers and at least one dense layer. For example, the electrode layers (anode and cathode) are porous to allow fluid flow in and out of the porous layer, while the electrolyte layer is a dense ionic conductor that prevents gases from passing from one side to the other. Other layers may include dense conductive interconnect layers and porous electrical contact layers between dense interconnects and porous electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/00
CPCC04B2237/064C04B2111/00853B22F7/002Y02E60/521C04B37/005C04B2237/343C04B38/0038C04B2111/00793B22F3/1121H01M8/0236H01M8/1206B29C67/04Y02E60/525B29C43/006B29K2105/04H01M2008/1293B01J2219/30223B01J2219/30296B01J2219/30416H01M8/1231Y02E60/50Y10T428/249953Y02P70/50C04B35/00C04B35/18C04B35/52C04B38/0067
Inventor M·C·塔克C·P·雅各布森S·J·维斯科
Owner RGT UNIV OF CALIFORNIA