摘要:
The invention relates to a lubricating metal coating and to a process for its preparation. The material constituting the coating in a composite material comprising a metal matrix within which talc particles are distributed as lamellae, the metal matrix being composed of a metal chosen from Fe, Co, Ni, Mn, Cr, Cu, W, Mo, Zn, Au, Ag, Pb or Sn or of an alloy of these metals or of a metal/semimetal alloy. The coating is obtained by a process consisting in carrying out an electrolytic deposition using a solution of precursors of the metal matrix of the coating which additionally comprises talc particles in suspension, which particles are modified at the surface by irreversible adsorption of a cellulose-derived compound by replacement of all or part of the hydroxyl groups.
摘要:
The invention relates to a method for preparing a synthetic talc composition. According to said method, a kerolite composition is subjected to an anhydrous thermal treatment carried out at a pressure lower than 5 bar, from over a few hours up to over a few days, at a treatment temperature higher than 300° C. The invention also relates to a synthetic talc composition prepared in this way, the synthetic talc particles of the composition being exclusively of chemical formula —(Si4)Mg3O10(OH)2— and identifiable, during X-ray diffraction, by the presence of a characteristic diffraction peak located at a distance of between 9.40-9.68 and corresponding to a plane (001). Said synthetic talc particles also have a thermally stable crystalline structure of stacked laminae, which is very similar to that of a natural talc and has a particle size smaller than approximately ten micrometers.
摘要翻译:本发明涉及一种制备合成滑石组合物的方法。 根据所述方法,在高于300℃的处理温度下,在低于5巴的压力下进行无水热处理,从超过几个小时至多数天,进行无水热处理。本发明还 涉及以这种方式制备的合成滑石组合物,该组合物的合成滑石颗粒仅在化学式(Si 4)Mg 3 O 10(OH)2)中,并且在X射线衍射过程中可通过存在特征衍射峰 位于9.40-9.68之间的距离,对应于平面(001)。 所述合成滑石颗粒也具有堆叠薄片的热稳定结晶结构,其与天然滑石非常相似,并且具有小于约十微米的粒度。
摘要:
The invention relates to a method for preparing a synthetic talc composition. According to said method, a kerolite composition is subjected to an anhydrous thermal treatment carried out at a pressure lower than 5 bar, from over a few hours up to over a few days, at a treatment temperature higher than 300° C. The invention also relates to a synthetic talc composition prepared in this way, the synthetic talc particles of the composition being exclusively of chemical formula —(Si4)Mg3O10(OH)2— and identifiable, during X-ray diffraction, by the presence of a characteristic diffraction peak located at a distance of between 9.40-9.68 and corresponding to a plane (001). Said synthetic talc particles also have a thermally stable crystalline structure of stacked laminae, which is very similar to that of a natural talc and has a particle size smaller than approximately ten micrometers.
摘要翻译:本发明涉及一种制备合成滑石组合物的方法。 根据所述方法,在高于300℃的处理温度下,在低于5巴的压力下进行无水热处理,从超过几个小时至多数天,进行无水热处理。本发明还 涉及以这种方式制备的合成滑石组合物,该组合物的合成滑石颗粒仅在化学式(Si 4)Mg 3 O 10(OH)2)中,并且在X射线衍射过程中可通过存在特征衍射峰 位于9.40-9.68之间的距离,对应于平面(001)。 所述合成滑石颗粒也具有堆叠薄片的热稳定结晶结构,其与天然滑石非常相似,并且具有小于约十微米的粒度。
摘要:
The invention relates to a method for preparing a composition, that is a talcose composition, comprising synthetic mineral particles which contain silicon, germanium and metal, have a crystalline and lamellar structure, and are of formula (SixGe1−x)4M3O10(OH)2, wherein M is at least one divalent metal and is of formula Mgy(1)COy(2)Zny(3)Cuy(4)Mny(5)Fey(6)Niy(7)Cry(8), and x is a real number of the interval [0; 1]. According to said method, a gel containing silicon, germanium and metal, of formula —(SixGe1−x)4M3O11, n′H2O—, in the liquid state, is subjected to a hydrothermal treatment over a defined period of time and at a temperature of between 300° C. and 600° C., said time and temperature being selected according to the desired particle size and structural stability for the mineral particles containing silicon, germanium and metal, to be prepared.
摘要:
A method for preparing a composition including mineral particles, that is swelling TOT-TOT interlayer particles, formed by interlayering between: at least one non-swelling mineral phase formed by a stack of elementary laminae of the phyllogermanosilicate 2/1 type and of formula —(SixGe1−x) 4M3O10(OH)2—, and at least one swelling mineral phase formed by a stack of elementary laminae of the phyllogermanosilicate 2/1 type and at least one interlaminar space between two consecutive elementary laminae, the swelling mineral phase being of formula —(SixGe1−x)4M3−εO10(OH)2, (M2+)ε′.nH2O. The composition is prepared by subjecting a gel containing silicon, germanium and metal, of chemical formula —(SixGe1−x)4M3O11,nH2O—, in the liquid state to a hydrothermal treatment which is carried out over a defined period of time and at a temperature of between 150° C. and 300° C., the time and temperature being selected according to the desired structural characteristics for the swelling TOT-TOT interlayer particles to be prepared.
摘要:
The invention relates to a method for preparing a composition, that is a talcose composition, comprising synthetic mineral particles which contain silicon, germanium and metal, have a crystalline and lamellar structure, and are of formula (SixGe1−x)4 M3O10(OH)2, wherein M is at least one divalent metal and is of formula Mgy(1)COy(2)Zny(3)Cuy(4)Mny(5)Fey(6)Niy(7)Cry(8), and x is a real number of the interval [0; 1]. According to said method, a gel containing silicon, germanium and metal, of formula —(SixGe1−x)4M3O11, n′H2O—, in the liquid state, is subjected to a hydrothermal treatment over a defined period of time and at a temperature of between 300° C. and 600° C., said time and temperature being selected according to the desired particle size and structural stability for the mineral particles containing silicon, germanium and metal, to be prepared.
摘要:
The invention relates to a method for preparing a composition comprising mineral particles, that is swelling TOT-TOT interlayer particles, formed by interlayering between: at least one non-swelling mineral phase formed by a stack of elementary laminae of the phyllogermanosilicate 2/1 type and of formula —(SixGe1-x)4M3O10(OH)2—, and at least one swelling mineral phase formed by a stack of elementary laminae of the phyllogermanosilicate 2/1 type and at least one interlaminar space between two consecutive elementary laminae, said swelling mineral phase being of formula —(SixGe1-x)4M3-εO10(OH)2, (M2+)ε′.nH2O. In order to prepare said composition, a gel containing silicon, germanium and metal, of chemical formula —(SixGe1-x)4M3O11,nH2O—, in the liquid state, is subjected to a hydrothermal treatment which is carried out over a defined period of time and at a temperature of between 150° C. and 300° C., said time and temperature being selected according to the desired structural characteristics for the swelling TOT-TOT interlayer particles to be prepared.
摘要:
A composite material includes a metal matrix in which synthetic lamellar phyllosilicated mineral particles are distributed. The lamellar phyllosilicated mineral particles are particles also called synthetic phyllosilicated nanoparticles (6) that are mineral, silico/germano-metal, lamellar, synthetic and hydrophilic, and have an average size of between 10 nm and 1 μm. A substrate that includes a lubricating coating consisting of such a material, and an electrolytic deposition preparation method are also described.
摘要:
A pill, or like object, splitting apparatus includes a base having a bottom and continuous side walls defining an interior area. The side wall defines primary apertures. A cutting platform is situated in the interior area in a first horizontal plane defined by apertures, the cutting platform defining a bore extending horizontally between the primary apertures. Primary clamp members extends through respective primary apertures into the bore of the cutting platform. The clamp members engage with the pill to position and hold the pill/tablet stable during the cutting process. A plunger assembly having a compression plate and a blade is operatively coupled to the compression plate, the plunger selectively positioned in communication with the interior area via the open top of the base such that the blade severs the pill upon a downward pressure on the compression plate. The cutting portion is interchangeable with different configurations of blade/blades.
摘要:
Video decoder apparatus and method, for decoding a motion-compensated transform-coded video stream. The apparatus has: a first mode in which it is operable to decode the video stream at a first resolution, and wherein a motion-compensation step of the decoding is performed in the image-domain. It also has a second mode in which it is operable to decode the video stream at a second resolution, and wherein at least one motion-compensation step is performed in the transform-domain. The decoder is adapted to switch between the two modes while decoding the video stream.