A filtration article comprises inorganic deposits disposed at inlet sides of porous ceramic base portions of a plugged honeycomb filter body; and a catalytic material, e.g., a three-way conversion (TWC) catalytic material, disposed at outlet sides of porous ceramic base portions of the plugged honeycomb filter body. Interposing regions are located between the inlet sides and the outlet sides of the porous ceramic base portions. A majority or all of the inorganic deposits are spaced away from a majority of the catalytic material by the interposing region at a given axial location and/or across an entire axial length. The inorganic deposits and the porous ceramic base portions are not hydrophobic.

A filtration article comprises inorganic deposits disposed at inlet sides of porous ceramic base portions of a plugged honeycomb filter body; and a catalytic material, e.g., a three-way conversion (TWC) catalytic material, disposed at outlet sides of porous ceramic base portions of the plugged honeycomb filter body. Interposing regions are located between the inlet sides and the outlet sides of the porous ceramic base portions. A majority or all of the inorganic deposits are spaced away from a majority of the catalytic material by the interposing region at a given axial location and/or across an entire axial length. The inorganic deposits and the porous ceramic base portions are not hydrophobic.

The invention relates to a method for manufacturing a composite component of a timepiece or of a jewelry part, the composite component comprising a porous ceramic part and a metallic material filling the pores of said ceramic part, said method comprising the steps of: providing a porous ceramic preform of the component, providing a metallic material, heating the metallic material to a temperature higher than the melting point of the metallic material, filling the pores of the ceramic preform with the molten metallic material, cooling the metallic material and the ceramic preform to obtain a solidified metallic material in the pores of the ceramic preform, and applying finishing treatments to obtain the composite component, wherein said porous ceramic preform consists essentially of a material selected from the group consisting of Si.sub.3N.sub.4, SiO.sub.2 and mixtures thereof, and said metallic material is selected from the group consisting of gold, platinum, palladium metals and alloys of these metals. The invention relates also to a composite component of a timepiece or of a jewelry part comprising a porous ceramic part and a metallic material filling the pores of said ceramic part, wherein said porous ceramic part consists essentially of a material selected from the group consisting of Si.sub.3N.sub.4, SO.sub.2 and mixtures thereof, and said metallic material which is selected from the group consisting of gold, platinum, palladium metals and alloys of these metals.

The invention relates to a method for manufacturing a composite component of a timepiece or of a jewelry part, the composite component comprising a porous ceramic part and a metallic material filling the pores of said ceramic part, said method comprising the steps of: providing a porous ceramic preform of the component, providing a metallic material, heating the metallic material to a temperature higher than the melting point of the metallic material, filling the pores of the ceramic preform with the molten metallic material, cooling the metallic material and the ceramic preform to obtain a solidified metallic material in the pores of the ceramic preform, and applying finishing treatments to obtain the composite component, wherein said porous ceramic preform consists essentially of a material selected from the group consisting of Si.sub.3N.sub.4, SiO.sub.2 and mixtures thereof, and said metallic material is selected from the group consisting of gold, platinum, palladium metals and alloys of these metals. The invention relates also to a composite component of a timepiece or of a jewelry part comprising a porous ceramic part and a metallic material filling the pores of said ceramic part, wherein said porous ceramic part consists essentially of a material selected from the group consisting of Si.sub.3N.sub.4, SO.sub.2 and mixtures thereof, and said metallic material which is selected from the group consisting of gold, platinum, palladium metals and alloys of these metals.

A composite material combininga precious metal or an alloy containing a precious metaland a boron-based ceramic having a melting point greater than that of said precious metal and a density at most equal to 4 g/cm3.

A composite material combininga precious metal or an alloy containing a precious metaland a boron-based ceramic having a melting point greater than that of said precious metal and a density at most equal to 4 g/cm3.

The invention relates to a mixture containing a gold thiolate, a rhodium(III) compound, and a solvent that contains at least one OH group, in which the mixture has a ratio V=(a)/(b)2.2; (a) is the fraction of solvent and (b) is the gold fraction of the gold thiolate, each relative to the total weight of the mixture.

The invention relates to a mixture containing a gold thiolate, a rhodium(III) compound, and a solvent that contains at least one OH group, in which the mixture has a ratio V=(a)/(b)2.2; (a) is the fraction of solvent and (b) is the gold fraction of the gold thiolate, each relative to the total weight of the mixture.

An apparatus includes a ceramic matrix composite (CMC) component and an interface coating on the CMC component, wherein the interface coating includes a layer of at least one of the following compositions: 40-50 wt % Nb, 28-42 wt % Al, 4-15 wt % Cr, 1-2 wt % Si; 90-92 wt % Mo, 4-5 wt % Si, 4-5 wt % B; or 60-80 wt % V, 20-30 wt % Cr, 2-15 wt % Ti.

An apparatus includes a ceramic matrix composite (CMC) component and an interface coating on the CMC component, wherein the interface coating includes a layer of at least one of the following compositions: 40-50 wt % Nb, 28-42 wt % Al, 4-15 wt % Cr, 1-2 wt % Si; 90-92 wt % Mo, 4-5 wt % Si, 4-5 wt % B; or 60-80 wt % V, 20-30 wt % Cr, 2-15 wt % Ti.