摘要:
Montage de culasse (10) pour un moteur à combustion interne. Le montage se compose d'un corps en céramique coulée (16) avec un coefficient d'expansion thermique inférieur à 1,0 x 10-6 pouce/pouce/oF (silicate d'aluminium et de lithium) s'adaptant sur le bloc cylindres (11) du moteur pour déterminer une chambre de combustion. Le corps en céramique possède des passages (18) pour les gaz chauds, s'étendant entre la chambre de combustion et une paroi latérale du corps, mais il ne contient pas de passage pour un refroidissement à eau conventionnel. Une enveloppe métallique (15) serre de manière étanche le corps en céramique au bloc cylindres du moteur; l'enveloppe supporte des sous-montages mécaniques (17) s'étendant dans le corps en céramique pour réguler l'écoulement des gaz à travers celui-ci. L'enveloppe porte au moins une partie de la charge de compression imposée par le serrage.
摘要:
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.
摘要:
Synthetic ceramic proppants are described. Proppants having a monodispersity of 3-sigma distribution or lower are also described, including methods to make these proppants and methods of using these proppants.
摘要:
The present invention refers to a ceramic composition which allows ceramic pieces to be obtained with a low-density when fired which includes carbonate, percarbonate and/or bicarbonate composites of elements whose valence states include valence +1 and/or peroxides of elements whose valence states include the valences +1 and/or +2 at a percentage exceeding 6% dry weight of the total composition. The present invention also refers to the use of said composition to make ceramic pieces with low-density and thermally and acoustically insulating properties.
摘要:
A method of producing percolated mullite in a body of material, the method including the step of heating the body of material, wherein the body of material has a composition that includes alumina and silica, and the weight ratio of alumina:silica is from approximately 10:90 to approximately 77:23. The percolated mullite produced extends continuously and/or substantially throughout the entire body of material.
摘要:
A method for selectively metallizing a surface of a ceramic substrate, a ceramic product and use of the ceramic product are provided. The method comprises steps of: A) molding and sintering a ceramic composition to obtain the ceramic substrate, in which the ceramic composition comprises a ceramic powder and a functional powder dispersed in the ceramic powder; the ceramic powder is at least one selected from a group consisting of an oxide of E, a nitride of E, a oxynitride of E, and a carbide of E; E is at least one selected from a group consisting of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, B, Al, Ga, Si, Ge, P, As, Sc, Y, Zr, Hf, and lanthanide elements; the functional powder is at least one selected from a group consisting of an oxide of M, a nitride of M, a oxynitride of M, a carbide of M, and a simple substance of M; and M is at least one selected from a group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, Ta, W, Re, Os, Ir, Pt, Au, In, Sn, Sb, Pb, Bi, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; B) radiating a predetermined region of the surface of the ceramic substrate using an energy beam to form a chemical plating active center on the predetermined region of the surface of the ceramic substrate; and C) performing chemical plating on the ceramic substrate formed with the chemical plating active center to form a metal layer on the predetermined region of the surface of the ceramic substrate.