Plugging micro-leaks in multi-component, ceramic tubesheets with material leached therefrom

Title: Plugging micro-leaks in multi-component, ceramic tubesheets with material leached therefrom

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Abstract

Cracks, in ceramic wall members, on the order of 1 micron or less in width are plugged helium-tight by selectively leaching a component of the wall member with a solvent, letting the resultant leach form a liquid bridge within the crack, removing the solvent and sintering the resultant residue. This method is of particular value for remedying microcracks or channels in a cell member constituting a tubesheet in a hollow fiber type, high temperature battery cell, such as a sodium/sulfur cell, for example. 1 fig.

Inventors:: Bieler, B.H.; Tsang, F.Y.

Issue Date:: 1985-03-19

OSTI Identifier:: 7250598

Patent Number(s):: 4505995 A

Application Number:: PPN: US 6-312588

Assignee:: Dow Chemical Co., Midland, MI (United States) PTO; EDB-94-123248

DOE Contract Number:: AC02-76ET25103

Resource Type:: Patent

Resource Relation:: Patent File Date: 19 Oct 1981

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE; 36 MATERIALS SCIENCE; BATTERY SEPARATORS; REPAIR; CERAMICS; SINTERING; SODIUM-SULFUR BATTERIES; CRACKS; LEACHING; SIZE; DISSOLUTION; ELECTRIC BATTERIES; ELECTROCHEMICAL CELLS; FABRICATION; METAL-NONMETAL BATTERIES; SEPARATION PROCESSES; 250903* - Energy Storage- Batteries- Materials, Components, & Auxiliaries; 360201 - Ceramics, Cermets, & Refractories- Preparation & Fabrication

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                    Bieler, B.H., and Tsang, F.Y. Plugging micro-leaks in multi-component, ceramic tubesheets with material leached therefrom.  United States: N. p., 1985. 
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                    Bieler, B.H., & Tsang, F.Y. Plugging micro-leaks in multi-component, ceramic tubesheets with material leached therefrom.  United States.

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                    Bieler, B.H., and Tsang, F.Y. Tue .  
        "Plugging micro-leaks in multi-component, ceramic tubesheets with material leached therefrom".  United States.

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@article{osti_7250598,

  title        = {Plugging micro-leaks in multi-component, ceramic tubesheets with material leached therefrom},

  author       = {Bieler, B.H. and Tsang, F.Y.},

  abstractNote = {Cracks, in ceramic wall members, on the order of 1 micron or less in width are plugged helium-tight by selectively leaching a component of the wall member with a solvent, letting the resultant leach form a liquid bridge within the crack, removing the solvent and sintering the resultant residue. This method is of particular value for remedying microcracks or channels in a cell member constituting a tubesheet in a hollow fiber type, high temperature battery cell, such as a sodium/sulfur cell, for example. 1 fig.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1985},

  month        = {3}

}

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Plugging micro-leaks in multi-component, ceramic tubesheets with material leached therefrom

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Cracks, in ceramic wall members, on the order of 1 micron or less in width are plugged helium-tight by selectively leaching a component of the wall member with a solvent, letting the resultant leach form a liquid bridge within the crack, removing the solvent and sintering the resultant residue. This method is of particular value for remedying microcracks or channels in a cell member constituting a tubesheet in a hollow fiber type, high temperature battery cell, such as a sodium/sulfur cell, for example.
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