Composite ceramic materials, articles, and method of manufacture
First Claim
Patent Images
1. A ceramic material comprising:
- a first crystalline phase comprised of a first refractory material, the first crystalline phase having a first melting point;
a second crystalline phase comprised of a second refractory material having a second melting point which is lower than the first melting point, wherein the second crystalline phase comprises domain sizes of greater than 5,000 μ
m2 as measured by Electron Backscattered Diffraction (EBSD);
wherein the first crystalline phase comprises MgTi2O5 in solid solution with tialite.
1 Assignment
0 Petitions
Accused Products
Abstract
Composite ceramic materials are disclosed herein which comprise two or more crystalline phases, wherein a first crystalline phase comprises a first refractory material having a first melting point, and a second crystalline phase comprises a second refractory material having a second melting point which is lower than the first melting point, and the second crystalline phase comprises large domain sizes of the second refractory material. Articles comprising such a composite ceramic material, such as honeycomb bodies, catalytic substrates, and particulate filters, are also disclosed herein, in addition to methods of manufacture thereof.
20 Citations
38 Claims
-
1. A ceramic material comprising:
-
a first crystalline phase comprised of a first refractory material, the first crystalline phase having a first melting point; a second crystalline phase comprised of a second refractory material having a second melting point which is lower than the first melting point, wherein the second crystalline phase comprises domain sizes of greater than 5,000 μ
m2 as measured by Electron Backscattered Diffraction (EBSD);wherein the first crystalline phase comprises MgTi2O5 in solid solution with tialite. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A composite ceramic material comprising:
-
a first crystalline phase comprised of tialite in solid solution with MgTi2O5, the first crystalline phase having a first melting point and a first maximum domain size in a select cross-sectional plane; a second crystalline phase comprised of cordierite having a second melting point which is lower than the first melting point, and having a second maximum domain size in the select cross-sectional plane, wherein a ratio of the second maximum domain size to the first maximum domain size is 6.0 or more; wherein the second crystalline phase has domain sizes of greater than 5,000 μ
m2 as measured by Electron Backscattered Diffraction (EBSD).
-
-
22. A ceramic material comprising:
-
a first crystalline phase comprised of a first refractory material, the first crystalline phase having a first melting point; a second crystalline phase comprised of a second refractory material having a second melting point which is lower than the first melting point, wherein the second crystalline phase comprises domain sizes of greater than 5,000 μ
m2 as measured by Electron Backscattered Diffraction (EBSD); anda third crystalline phase; wherein the first crystalline phase comprises mullite, the second crystalline phase comprises cordierite, and the third crystalline phase comprises tialite and MgTi2O5. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
-
Specification