Abstract

The present disclosure relates to the field of materials, and in particular, to a method for preparing anti-coking Ni-YSZ anode materials for SOFC. The present disclosure provides a method for preparing a SOFC anode material, including: (1) providing the mixed powder of NiO and YSZ; (2) subjecting the mixed powder provided in step (1) to two-phase mutual solid solution treatment; (3) adjusting the particle size of the product obtained in the solid solution treatment in step (2). The SOFC anode material provided by the present disclosure could prepare the SOFC anode with good carbon deposition resistance. The anode material as a whole has the advantages of low cost, good catalytic performance, desirable electronic conductivity and well chemical compatibility with YSZ, etc. The long-term stability of cell performance is strong, and the cell preparation method is also easy to achieve industrialization.

IPC Classes  ?

• H01M 8/12 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
• H01M 4/90 - Selection of catalytic material
• H01M 4/86 - Inert electrodes with catalytic activity, e.g. for fuel cells
• H01M 8/1253 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides the electrolyte containing zirconium oxide
• H01M 8/1213 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material
• H01M 8/124 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte

Abstract

A preparation method for an SOFC anti-carbon-deposition Ni-YSZ anode material, relating to the field of materials. The preparation method comprises: (1) providing a mixed powder of NiO and YSZ; (2) performing two-phase mutual solid solution treatment on the mixed powder provided in step (1); and (3) performing particle size adjustment on a product obtained by solid solution treatment in step (2). According to the SOFC anode material and an SOFC monocell prepared by same provided in the present invention, an anode thereof has a good anti-carbon-deposition property, and the anode material, as a whole, has advantages such as low cost, good catalytic performance, good electronic conductivity, and good chemical compatibility with YSZ; the long-term stability of the cell performance is good; and the preparation method for the cell also facilitates the implementation of industrialization.

IPC Classes  ?

• H01M 4/90 - Selection of catalytic material
• H01M 4/88 - Processes of manufacture
• H01M 8/10 - Fuel cells with solid electrolytes
• C04B 35/622 - Forming processesProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products

Abstract

The application relates to bond materials for a grinding wheel, in particular a glass ceramic and a preparation method thereof, and a bond for the composite grinding wheel. The glass ceramic is prepared from raw materials comprising kaolin, silica, diboron trioxide, lithium superoxide, albite, potassium feldspar, talc, dolomite, phosphorus pentoxide, and yttrium oxide. A glass ceramic composed entirely of microcrystalline phases is obtained from the glass prepared by the above raw materials at 900-1020° C., achieving a complete conversion of the glass phase at a low temperature. The application also provides a bond for a composite grinding wheel, comprising glass ceramic and glass with mass ratio of (20-50):(50-80), the glass phase having a low flow temperature and, together with the glass ceramic phase, forming encapsulation of the abrasive particles, realizing low-temperature sintering of the grinding wheel. Microcrystalline phase in the bond results in high mechanical strength for the obtained grinding wheel.

IPC Classes  ?

• C03C 10/04 - Silicate or polysilicate crystalline phase, e.g. mullite, diopside, sphene, plagioclase
• C03C 10/10 - Alkali metal aluminosilicate crystalline phase
• B24D 3/04 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
• B24D 3/34 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
• C03C 10/00 - Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition

Abstract

Disclosed are microcrystalline glass and a preparation method therefor, and a composite grinding wheel bonding agent containing the microcrystalline glass, a preparation method therefor and the use thereof. The raw materials of the microcrystalline glass comprise kaolin, silica, diboron trioxide, lithium dioxide, albite, potassium feldspar, talc, dolomite, phosphorus pentoxide and yttrium oxide. The micryocrystalline glass, which is completely composed of a microcrystalline phase, can be obtained from glass, which is prepared by means of the above-mentioned raw materials, at 900ºC-1020ºC, thus achieving the complete conversion of a glass phase at a relatively low temperature. Furthermore, provided is a composite grinding wheel bonding agent, comprising the microcrystalline glass and the glass in a mass ratio of (20-50): (50-80). The glass phase in the bonding agent has a relatively low flow temperature, and can, together with a microcrystalline glass phase, form a coating on abrasive particles, thus achieving the low temperature sintering of a grinding wheel. Additionally, the presence of a microcrystalline phase in the bonding agent makes the mechanical strength of the resulting grinding wheel higher.

IPC Classes  ?

• C03C 10/12 - Lithium aluminosilicate, e.g. spodumene, eucryptite
• C03C 10/10 - Alkali metal aluminosilicate crystalline phase
• C03C 10/08 - Magnesium aluminosilicate, e.g. cordierite
• C03C 10/06 - Divalent metal oxide aluminosilicate crystalline phase, e.g. anorthite, slagcerams
• C03C 10/04 - Silicate or polysilicate crystalline phase, e.g. mullite, diopside, sphene, plagioclase
• B24D 3/04 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
• B24D 3/34 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties

Abstract

The present invention provides a high temperature and bright red ink-jet ink for ceramic decoration, its preparation method and application thereof. On the base that the existing ink-jet ink production process, ink-jet printing equipment and ink-jet printing process are not made major changes, high temperature bright red ink basic glaze powder composition, basic glaze frit powder composition, solvent composition, basic glaze powder and bright red pigment grinding method and particle size optimization, ink composition and processing methods are adjusted and optimized. Thus the performance of high temperature bright red ink can meet the requirement of the use of ink-jet printing machine, and after high temperature firing (1080° C.˜1230° C.), the surface decoration color of ceramic tile sprayed a single printed high temperature bright red is bright red, colorful, pure red, and at the superposing place with other color ink-jet printing ink, the color is bright, colorful, color gamut broad. At the same time, the technology has strong universality and is easy to popularize in the industry.

IPC Classes  ?

• C09K 3/00 - Materials not provided for elsewhere
• C04B 41/86 - GlazesCold glazes
• C03C 8/12 - Frit compositions, i.e. in a powdered or comminuted form containing lead containing titanium or zirconium
• C04B 41/50 - Coating or impregnating with inorganic materials
• C03C 3/105 - Glass compositions containing silica with 40% to 90% silica by weight containing lead containing aluminium
• C03C 8/20 - Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill additions containing titanium compoundsGlass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill additions containing zirconium compounds
• C04B 41/00 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone
• C09D 11/322 - Pigment inks
• C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
• C09D 1/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
• C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
• C09D 5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes
• C09D 11/00 - Inks
• B41M 5/00 - Duplicating or marking methodsSheet materials for use therein

Abstract

A preparation method for a ceramic decoration high-temperature bright red inkjet ink and the use thereof. The method focuses on the optimization of the basic glaze powder composition, basic glaze powder frit composition, solvent composition, methods for grinding a basic glaze powder and a bright red material and particle size of the high-temperature bright red inkjet ink, without major changes of existing inkjet ink production processes and inkjet printing production processes, so that the performance of the high-temperature bright red inkjet ink meets the use requirements of an inkjet printing machine, and after the ceramic tiles printed with the high-temperature bright red inkjet ink are fired at a high temperature, the surface decoration colour is pure bright red, the glaze surface is as glossy and bright as the rising sun, and the portion with red superimposed on inkjet ink printing of other colours is bright and colourful and has a wide colour gamut. The worldwide problem that the high-temperature bright red of a ceramic decoration inkjet ink is not pure and even cannot be shown on the ceramic is solved. Meanwhile, the technology has relatively good universality and can be easily implemented in the industry.

IPC Classes  ?

• C04B 41/86 - GlazesCold glazes
• C04B 41/89 - Coating or impregnating for obtaining at least two superposed coatings having different compositions