Abstract:
The invention relates to the use of phosphate and/or phosphonate compounds in a clay composition to prevent or limit the formation of sulphate-based efflorescences, and also to the clay compositions and terracotta articles resulting therefrom.
Abstract:
A composition of matter and method of forming a radiation shielding member at ambient temperatures in which the composition of matter includes a 'cold-fired' chemically bonded oxide-phosphate ceramic cement matrix; with one or more suitably prepared and distributed radiation shielding materials dispersed in the 'cold-fired' chemically bonded oxide-phosphate ceramic cement matrix.
Abstract:
The present invention relates to a method to manufacture a composite ceramic material having a high strength combined with bioactive properties, when the material is used as a dental or orthopedic implant, which includes preparing a powder mixture, mainly comprising partly a first powder, which in its used chemical state will constitute a bioinert matrix in the finished material, and partly a second powder, mainly comprising a calcium phosphate-based material. The invention is characterized in that said first powder comprises at least one of the oxides belonging to the group consisting of titanium dioxide (TiO2), zirconium oxide (ZrO2) and aluminum oxide (Al2O3), in that said second powder mainly comprises at least one of the compounds hydroxylapatite and tricalcium phosphate, in that a raw compact is made of said powder mixture and in that said raw compact is densified through an isostatic pressing in a hot condition (HIP) at a pressure higher than 50 MPa, a composite material being obtained, in which said matrix comprises one or several metal oxides of said first powder, in which matrix said compound hydroxylapatite and/or tricalcium phosphate is evenly dispersed. The invention also relates to a composite ceramic material as well as a body, completely or partially made of this material.
Abstract:
Die Erfindung betrifft ein in Wasser und/oder organischen Lösemitteln leicht dispergierbares BN-Granulat, umfassend hexagonales BN, anorganisches Bindemittel sowie gegebenenfalls übliche Zusatz- und Hilfsstoffe. Gegenstand der Erfindung sind ebenfalls Verfahren zur Herstellung eines solchen BN-Granulats durch Sprühtrocknen, Aufbaugranulation oder Wirbelschichtgranulation. Die erfindungsgemäßen BN-Granulate können verwendet werden zur Herstellung einer BN-Suspension für Beschichtungszwecke durch Einrühren des BN-Granulats in Wasser und/oder organisches Lösungsmittel.
Abstract:
The present invention provides a ceramic porous body for in-vitro and in-vivo use comprising a composition comprising a calcium aluminate (CA) containing phase and optionally at least one of an accelerator, a retarder, a surfactant, a foaming agent, a reactive alumina, water, a fiber, and a biologically active material, and combinations thereof. Ceramic compositions are provides as well as method of using the ceramic compositions and methods of manufacturing a ceramic porous body. The ceramic porous bodies of this invention may be used as artificial bones, joints, in-vitro support structures, and in-vivo support structures for cells, tissues, organs, and nerve growth and regeneration.
Abstract:
A method is provided for heavy metal stabilisation comprising: mixing waste, comprising heavy metals, with molecular sieve with the proviso that carbon-based molecular sieve is excluded, and clay; and vitrifying the mixture. In particular, a method comprising the steps of: preparing a pre-stabilised mixture by mixing waste, comprising heavy metals, with the molecular sieve, and optionally other chemicals; mixing the pre-stabilised mixture with clay; and vitrifying the obtained mixture is provided. It also provides a product comprising heavy metals that have been stabilised into the structure of the clay-based ceramic matrix, wherein the product is a vitrified product of a mixture of at least waste, comprising heavy metals, molecular sieve (with the proviso that carbon-based molecular sieve is excluded) and clay.
Abstract:
The inventive thermochromic material comprises a thermochromic component and a binding agent. Crystalline phases of oxides selected from a group consisting of compounds of common equations are used as the thermochromic component: (i) (Bi2O3)1-z(MxOy)z, at z=0-0.5, where M is selected from a group comprising heavy, alkaline and alkaline-earth metals and mixtures thereof, (ii) (MxOy)m(Bi2O3)n Nb (Ta)2O5, at m=o-1, n=1-2; where M is selected from a group comprising heavy, alkaline and alkaline-earth metals and mixtures thereof, (III) (MxOy)m(Bi2O3)n Mo (W)O3, at m=0-1, n=0-12, where M is selected from a group comprising heavy, alkaline and alkaline-earth metals and mixtures thereof, (iv) (MxOy)m(MexOy)nMo(W,Cr)O3, at mm=0-1,n=0-1, where M is selected from a group comprising heavy, alkaline and alkaline-earth metals and mixtures thereof, Me being a heavy metal, (v) (MxOy)m(MexOy)nNb (Ta)2O5; at m=0-1, n=0-1, where M is selected from a group comprising heavy, alkaline and alkaline-earth metals and mixtures thereof, Me being selected from a group consisting of Cu(II), Mn(II), Mn(III),Co(II), Ni(II) and Cr(iii), at a ratio between the thermochromic component and the binding agent ranging from 2.98 to 98.2 mass %. The inventive thermochromic components are provided with a property to reversibly change the colour thereof in such a way that the temperature variation of 100 DEG C is visible. Coatings based on said components exhibit thermal stability.
Abstract translation:本发明的热变色材料包括热变色组分和结合剂。 使用选自常用方程式的化合物的氧化物的结晶相作为热致变色组分:(i)(z 2 O 3)1-z(M x O y)z,z = 0-0.5,其中M选自包含 (ii)(M x O y)m(Bi 2 O 3)n Nb(Ta)2 O 5,m = 0-1,n = 1-2; 其中M选自重,碱和碱土金属及其混合物,(III)(M x O y)m(Bi 2 O 3)n Mo(W)O 3,m = 0-1,n = 其中M选自重,碱和碱土金属及其混合物,(iv)(MxOy)m(MexOy)nMo(W,Cr)O3,在mm = 0-1,n = 0-1 其中M选自重,碱和碱土金属及其混合物,Me是重金属,(v)(MxOy)m(MexOy)nNb(Ta)2 O5; 在m = 0-1,n = 0-1,其中M选自重,碱和碱土金属及其混合物,Me选自Cu(II),Mn(II) ,Mn(III),Co(II),Ni(II)和Cr(ⅲ),热变色组分与结合剂之间的比例为2.98〜98.2质量%。 本发明的热变色组分具有可逆地改变其颜色的性质,使得可见100℃的温度变化。 基于所述组分的涂料表现出热稳定性。