Low alkali sealing frits, and seals and devices utilizing such frits

Low alkali sealing frits, and seals and devices utilizing such frits

  • CN 101,111,950 A
  • Filed: 01/30/2006
  • Published: 01/23/2008
  • Est. Priority Date: 02/03/2005
  • Status: Active Application
First Claim
Patent Images

1. solid oxide fuel cell device has added the encapsulant of anti-hydrogen permeate under the seal temperature in 700-900 ℃

  • intermediate temperature range in this device, the CTE of sealing material is 70 * 10 -7/ ℃

    to 120 * 10 -7/ ℃

    , described encapsulant comprises following component according to weight %;

    (i) frit of 80-100 weight %, this frit itself have the following composition by mole %;

    SiO 2Be 15-65;

    Li 2O is 0-5;

    Na 2O is 0-5;

    K 2O is 0-10;

    MgO is 0-5;

    CaO is 0-32;

    Al 2O 3Be 0-10;

    B 2O 3Be 0-50;

    SrO is 0-25, and wherein alkali-metal total amount is less than 10 moles of %. The (ii) zirconia of 0-30 weight % or leucite additive.

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