摘要:
The present application discloses a sintered ceramic material having high fracture toughness and bending strength, which is obtained from an yttria-stabilized Zirconia powder, the powder composition for obtaining said material, sintered ceramic pieces and manufacturing process thereof. One of the solutions of the present invention discloses a sintered ceramic material which is obtained from an yttria- stabilized zirconia powder, comprising between 1.8 and 2.1 mol% yttria, wherein the sintered ceramic material has a percentage of tetragonal phase greater than 90% at room temperature, a grain size between 0.1 to 0.25 μπι, the bending strength is between 1150-2100 MPa, and simultaneously a toughness greater than 10 MPa.m1/2. This material may be applied in different sintered ceramic pieces, including pieces for the automotive sector, for diverse machinery, ornamental applications such as timepieces or pieces for biomedical applications, among others.
摘要:
Abrasive particles include: 0.50 to 5.00 weight percent of seed particles for alpha-alumina formation selected from the group consisting of alpha-Fe 2 O 3 seed particles, alpha-Al 2 O 3 seed particles, and combinations thereof; 0.50 to 5.00 weight percent of MgO; 0.02 to 0.40 weight percent of Li 2 O or a molar equivalent amount of at least one alkali metal oxide selected from the group consisting of: Na 2 O; K 2 O; combinations of Na 2 O and Li 2 O; combinations of K 2 O and Li 2 O; combinations of Na 2 O and K 2 O; and combinations of Li 2 O, Na 2 O, and K 2 O; and 91.08 to 99.48 weight percent of Al 2 O 3 . Methods of making the abrasive particles and abrasive articles incorporating them are also disclosed.
摘要:
Gegenstand der Erfindung sind Silicium/Graphit/Kohlenstoff-Komposite (Si/G/C-Komposite), enthaltend Graphit (G) und nicht-aggregierte, nanoskalige Silicium-Partikel (Si), wobei die Silicium-Partikel in eine Kohlenstoffmatrix (C) eingebettet sind, ein Verfahren zur Herstellung solcher Komposite, ein Elektrodenmaterial für Lithiumionenbatterien enthaltend solche Komposite sowie eine Lithium-Ionen-Batterie.
摘要翻译:本发明涉及一种硅/石墨/碳复合物(硅/ G / C复合材料)含有石墨(G)和非聚集的,纳米级硅颗粒(Si)的,其中,在碳基体中的硅颗粒(C) 被嵌入,用于制造这样的复合材料,含有这种复合材料的锂离子电池的电极材料,并且锂离子电池的方法。
摘要:
Disclosed herein are green bodies comprising at least one ceramic-forming powder; at least one binder; and at least one cross-linked starch present in an amount of at least about 20% by weight as a super addition. Further disclosed herein is a method of making a porous ceramic body comprising mixing at least one ceramic-forming powder, at least one solvent such as water, at least one binder, and at least one cross-linked starch present in an amount of about 20% by weight as a super addition to form a batch composition; extruding the batch composition to form a green body; drying the green body; and firing the green body to form a porous ceramic body. Also disclosed herein are methods of screening a green body for making a porous ceramic body.
摘要:
A method for producing a lightweight ceramic aggregate is described in that the raw material mixture consisting of power station ashes originating from combusting coal, or ashes from combusting coal in a mixture with biomass ash, or ashes from co-combusting biomass with coal and phosphogypsum in an amount of up to 50% by weight, taken from dumps and/or from direct dump from a power station or a heat and power station with a content of non-burnt coal above 6% by weight, agglomeration promoting agents, clay preferably up to 6% by weight, organic waste materials in an amount preferably of up to 10% by weight, and after-coal mining waste materials, the mixture being completed with dust separated from exhaust gases produced during burning and sintering is granulated, screened, dried and subsequently burned and sintered. A system for producing said lightweight ceramic aggregate is also described.
摘要:
In a known composite material with a fused silica matrix there are regions of silicon-containing phase embedded. In order to provide a composite material which is suitable for producing components for use in high-temperature processes for heat treatment even when exacting requirements are imposed on impermeability to gas and on purity, it is proposed in accordance with the invention that the composite material be impervious to gas, have a closed porosity of less than 0.5% and a specific density of at least 2.19 g/cm 3 , and at a temperature of 1000°C have a spectral emissivity of at least 0.7 for wavelengths between 2 and 8 μm.
摘要翻译:在具有熔融二氧化硅基质的已知复合材料中,存在嵌入含硅相的区域。 为了提供一种适用于生产用于热处理的高温方法的组分的复合材料,即使当对气体的不渗透性和纯度施加严格要求时,根据本发明提出复合材料为 不透气体,具有小于0.5%的封闭孔隙率和至少2.19g / cm 3的比密度,并且在1000℃的温度下对于2至8μm的波长具有至少0.7的光谱发射率。
摘要:
In a method for sintering workpieces to be sintered, the workpieces (22) to be sintered are debindered in an oxygen-free or at least oxygen-reduced inert gas atmosphere, wherein a debindering atmosphere is generated which is loaded with binding auxiliaries that are released from the workpieces (22) to be sintered during the debindering process. The workpieces (22) to be sintered are brought to a sintering temperature (T2), wherein a sintering discharge gas is generated, and the workpieces to be sintered are cooled in a controlled manner. The sintered workpieces (22) are debindered in a separate debindering chamber (28) and sintered in a separate sintering chamber (30). The invention further relates to a system for sintering workpieces (22) to be sintered.