摘要:
A porous ceramic honeycomb body (10) including intersecting walls that form channels (22) extending axially from a first end face to a second end face and layered plugs (62) comprised of a first layer (64) disposed on channel walls and a second layer (66) disposed inward toward an axial center of each respective channel on the first layer. The plugs seal at least one of a first portion of the channels at the first end face and a second portion of channels at the second end face of the porous ceramic honeycomb body.
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 disclosure relates to porous ceramic articles and a method of making the same. The porous ceramic articles have microstructure of sinter bonded or reaction bonded large pre-reacted particles and pore network structure exhibiting large pore necks. The method of making the porous ceramic articles involves using pre-reacted particles having one or more phases. A plastic ceramic precursor composition is also disclosed. The composition includes a mixture of at least one of dense, porous, or hollow spheroidal pre-reacted particles and a liquid vehicle.
摘要:
A fly ash composition including fly ash and a plasticizing agent and being in a powder form is disclosed. The plasticizing agent is capable of binding the fly ash particles in the fly ash composition together on pressing of the fly ash composition. Processes of forming shaped articles containing fly ash may utilize the fly ash composition and/or mixtures containing fly ash and have low water content and may exhibit sufficient green strength to be handled by industrial equipment.
摘要:
An alumina sintered body has a main phase made of alumina crystals, a first dispersed phase made of MgAl2O4 dispersed in the main phase, and a second dispersed phase made of SiO2 and/or CaO dispersed in the main phase. A content ratio of the main phase is within a range from not less than 98% to less than 98%. The alumina sintered body satisfies a relationship of 100×I2/I1≧5.5%, where I1 indicates a maximum peak height intensity derived from alumina, and I2 indicates a maximum peak height intensity derived from MgAl2O4 in a X-ray diffraction of the alumina sintered body. An area ratio of the second dispersed phase on a surface of the alumina sintered body is not more than 15.2%. A spark plug has a central electrode, a ground electrode and an insulator made of the alumina sintered body having the specific features previously described.
摘要翻译:氧化铝烧结体具有由氧化铝晶体制成的主相,分散在主相中的分散在MgAl 2 O 4中的第一分散相和分散在主相中的SiO 2和/或CaO制成的第二分散相。 主相的含有率在98%以上且小于98%的范围内。 氧化铝烧结体满足100×I2 /I1≥5.5%的关系,其中I1表示由氧化铝衍生的最大峰高强度,I2表示在氧化铝烧结体的X射线衍射中来自MgAl 2 O 4的最大峰高强度 身体。 第二分散相在氧化铝烧结体表面的面积比不大于15.2%。 火花塞具有中心电极,接地电极和由具有前述具体特征的氧化铝烧结体制成的绝缘体。
摘要:
The present invention relates to a production method for a truly spherical ceramic ball by means of a rotational method. More specifically, a method is disclosed which uses seeds to facilitate formation of ceramic balls into a spherical shape and repeats heating and cooling or grades ceramic balls according to size to form ceramic balls having a similar size during the formation process, thereby increasing strength of the ceramic balls while ensuring excellent particle size distribution.
摘要:
An alumina sintered body has a main phase made of alumina crystals, a first dispersed phase made of MgAl2O4 dispersed in the main phase, and a second dispersed phase made of SiO2 and/or CaO dispersed in the main phase. A content ratio of the main phase is within a range from not less than 98% to less than 98%. The alumina sintered body satisfies a relationship of 100×I2/I1≧5.5%, where I1 indicates a maximum peak height intensity derived from alumina, and I2 indicates a maximum peak height intensity derived from MgAl2O4 in a X-ray diffraction of the alumina sintered body. An area ratio of the second dispersed phase on a surface of the alumina sintered body is not more than 15.2%. A spark plug has a central electrode, a ground electrode and an insulator made of the alumina sintered body having the specific features previously described.
摘要翻译:氧化铝烧结体具有由氧化铝晶体制成的主相,分散在主相中的分散在MgAl 2 O 4中的第一分散相和分散在主相中的SiO 2和/或CaO制成的第二分散相。 主相的含有率在98%以上且小于98%的范围内。 氧化铝烧结体满足100×I2 /I1≥5.5%的关系,其中I1表示由氧化铝衍生的最大峰高强度,I2表示在氧化铝烧结体的X射线衍射中来自MgAl 2 O 4的最大峰高强度 身体。 第二分散相在氧化铝烧结体表面的面积比不大于15.2%。 火花塞具有中心电极,接地电极和由具有前述具体特征的氧化铝烧结体制成的绝缘体。
摘要:
This invention is related to the oil and gas production industry and more particularly to a proppant that can be used to enhance oil and gas production in hydraulic fracturing. Most particularly, the invention is a composition and a manufacturing process for making ceramic proppant: a ceramic matrix composition formed from a precursor of the matrix and a reinforcing additive, in which the reinforcing additive is in the form of numerous elongated inorganic crystals; or one or more than one precursor may be pre-fired (pre-calcined).
摘要:
A carbon composite comprises: at least two carbon microstructures; and a binding phase disposed between the at least two carbon microstructures; wherein the binding phase includes a binder comprising one or more of the following SiO2; Si; B; B2O3; a metal; or an alloy of the metal, and the metal is at least one of aluminum; copper; titanium; nickel; tungsten; chromium; iron; manganese; zirconium; hafnium; vanadium; niobium; molybdenum; tin; bismuth; antimony; lead; cadmium; or selenium.
摘要:
There is disclosed a porous material containing aggregates; and a composite binding material which binds the aggregates to one another in a state where pores are formed and in which mullite particles that are reinforcing particles are dispersed in cordierite that is a binding material, and a content of metal silicon is smaller than 15 mass %. Preferably, to a total mass of the aggregates, the composite binding material and the metal silicon, a lower limit value of a content of the composite binding material is 12 mass %, and an upper limit value of the content of the composite binding material is 50 mass %. Preferably, to the total mass, a lower limit value of a content of the mullite particles is 0.5 mass %, and an upper limit value of the content of the mullite particles is 15 mass %. A porous material having a high thermal shock resistance is provided.