IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0399582
(1999-09-20)
|
발명자
/ 주소 |
- James B. Schutz
- Thomas F. Barton
|
출원인 / 주소 |
|
대리인 / 주소 |
Greenlee, Winner and Sullivan, P.C.
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인용정보 |
피인용 횟수 :
20 인용 특허 :
15 |
초록
▼
Glass-ceramic sealants for ceramic membrane reactors, ceramic membrane sealed to holders or substrates and methods of making seals between two ceramic materials or between a ceramic and a metal or metal alloy are provided. These sealants combine silicate glass-ceramic materials with selected metal o
Glass-ceramic sealants for ceramic membrane reactors, ceramic membrane sealed to holders or substrates and methods of making seals between two ceramic materials or between a ceramic and a metal or metal alloy are provided. These sealants combine silicate glass-ceramic materials with selected metal oxides and, optionally, materials similar or identical to the materials being sealed, and employ thermal processing so that the resultant materials will have a thermal expansion coefficient that substantially matches the thermal expansion coefficients of the two materials. Surfaces of the ceramic sealant that are exposed to reactive atmospheres can be protected by providing a metal or metallic alloy layer over the ceramic seal.
대표청구항
▼
1. A sealant composition comprising a mixture by weight of about 40% to about 85% SiO2 and three or more metal oxides selected from the group aluminum oxide, cobalt oxide, sodium oxide, boron oxide, calcium oxide, magnesium oxide, zinc oxide, titanium oxide, lithium oxide, potassium oxide, phosphoro
1. A sealant composition comprising a mixture by weight of about 40% to about 85% SiO2 and three or more metal oxides selected from the group aluminum oxide, cobalt oxide, sodium oxide, boron oxide, calcium oxide, magnesium oxide, zinc oxide, titanium oxide, lithium oxide, potassium oxide, phosphorous oxide and zirconium oxide combined with 0.5% to about 80% by weight of a ceramic membrane material wherein the ceramic membrane material is an ionic or electronic conductor material of the formula:AxA'x'ByB'y'O5+z where: A is a lanthanide metal which includes: the lanthanides and yttriun, e.g., La, Ce,Pr, Nd, Pm, Sm, Eu, Gd, Th, Dy, Ho, Rr, Tm, Yb, Lu and Yt, or mixtures thereof; A' is a Group 2b element of the Periodic Table; B is an element selected from the group consisting of Al, Ga, In, or mixtures thereof; and B' is a d block transition metal, Mg, or mixture of such elements; y,y', x and x'0; x+x'=2 y+y'=2 and z is a number that makes the material charge neutral.
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