Abstract:
Disclosed is a honeycomb support structure comprising a honeycomb body and an outer layer or skin formed of a cement that includes an inorganic filler material having a first coefficient of thermal expansion from 25°C to 600°C and a crystalline inorganic fibrous material having a second coefficient of thermal expansion from 25°C to 600°C.
Abstract:
A shaped article for use in a separation device may be produced by forming a batch mixture that includes filler material, fibrous material, and an inorganic binder, and shaping the batch mixture into a shaped structure. The fibrous material may have a D 50 of greater than or equal to about 4 microns. The batch mixture may include greater than or equal to about 60 parts by weight and less than or equal to about 98 parts by weight of filler material, greater than or equal to about 2 parts by weight and less than or equal to about 40 parts by weight of fibrous material, and greater than or equal to about 10 parts by weight and less than or equal to about 50 parts by weight of inorganic binder per 100 parts by weight of the sum of the filler material and fibrous material, respectively.
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.
Abstract:
Disclosed is a ceramic honeycomb structure comprising a honeycomb body and a multilayered outer layer formed of a thick core layer applied and rapidly dried and a thin clad layer dried more gently to form a crack free dual skin layer. The core layer may have properties that are closer to those of the ceramic honeycomb body in service than the clad layer that may provide a tough outer shell to withstand handling and assembly.
Abstract:
A composition for applying to a honeycomb body includes a refractory filler, an organic binder, an inorganic binder, and a liquid vehicle, wherein the refractory filler, the particle size distribution of the refractory filler, the organic binder, and the inorganic binder are selected such that, when the composition is applied to plug a plurality of channels of the honeycomb body, the plug depth variability is reduced.