10results about How to "Reduce sintering cost" patented technology

The invention relates to the photovoltaic field, and provides a photovoltaic cell preparation method, a sintering device, a photovoltaic cell and a photovoltaic module, the photovoltaic cell preparation method comprises the following steps: providing a cell substrate; preparing a copper paste layer on the surface of the cell substrate; performing first microwave treatment on the battery substrate, and heating the copper paste layer to a first temperature; performing second microwave treatment on the battery substrate, and heating the copper paste layer to a second temperature; the first temperature is lower than the second temperature; and the copper paste layer is subjected to electromagnetic treatment, and the copper paste layer forms an electrode, so that good ohmic contact and sintering cost are considered.

The application discloses an inorganic composite solid electrolyte and a preparation method thereof, and relates to the technical field of lithium batteries, and specifically discloses an inorganic composite solid electrolyte and a preparation method thereof. The preparation method of the inorganic composite solid electrolyte comprises the following steps: S1, mixing lithium salt, metal oxide A, metal oxide B and ammonium dihydrogen phosphate, wherein the metal oxide B is titanium oxide, and intermittent vibration ball milling is performed to obtain mixed powder; S2, adding lanthanum oxide and germanium oxide into the mixed powder obtained in the step S1, and continuing to perform intermittent vibration ball milling to obtain composite powder; and S3, performing low-temperature sintering on the composite powder obtained in the step S2, and pressing to obtain an inorganic composite solid electrolyte film layer. The preparation method can significantly improve the reaction activity and synergistic effect among raw materials by adopting two-step intermittent vibration ball milling and one-step low-temperature sintering, and the conductivity of the inorganic composite solid electrolyte and the lithium ion transmission performance and cycle life of the solid battery are improved, and meanwhile, no solvent is used in the preparation process, and the sintering cost is reduced.

The invention relates to the technical field of investment casting, in particular to a ceramic core material, a ceramic core and a preparation method and application thereof. The ceramic core material comprises a core material and a plasticizer, the core material comprises the following components in parts by weight: 65-85 parts of fused white corundum powder, 5-25 parts of metal silicon powder and 1-15 parts of silicon nitride powder. In the ceramic core material disclosed by the invention, the core material is compounded by a certain amount of fused corundum powder, metal silicon powder and silicon nitride powder, and silicon nitride is used as a second phase and is matched with other components, so that the ceramic core is endowed with more excellent high-temperature strength, deformation resistance, thermal shock resistance and the like; moreover, silicon nitride is used as a binding phase of the ceramic core, and has high solubility in a high-concentration aqueous alkali, so that the removal efficiency of the ceramic core is greatly improved.

The invention relates to a sintering performance evaluation method suitable for superfine iron ore powder, which comprises the following steps: before the iron ore powder is evaluated, sampling is carried out for chemical component analysis and macroscopic particle size detection; respectively carrying out sintering performance index detection on three parts of a normal-temperature overwet zone Ir, a drying preheating zone Id and a sintering high-temperature zone Ic on the iron ore powder, recording data and calculating an iron ore powder sintering conversion coefficient Isinter; calculating a chemical component conversion coefficient alpha iof the iron ore powder according to the detected chemical components of the iron ore powder; recording the iron ore powder price P 'iof, and multiplying the iron ore powder price P' iof by the sintering characteristic value Isinter of the iron ore powder and the chemical component conversion coefficient alpha iof to obtain a final iron ore powder cost performance calculation value Piof; and by comparing the cost performance calculation values Piof of different types of iron ore powder, the iron ore powder with the optimal cost performance is further determined. The sintering performance of the fine iron powder in the actual sintering production simulation process can be more intuitively known, the type of the fine iron powder with high cost performance can be determined through various evaluation index results, and data guidance is provided for production.

The utility model discloses a silicon nitride ceramic heater, and relates to the technical field of ceramic heating. Comprising a ceramic laminated plate which is formed by laminating a plurality of ceramic layers, a heating circuit which is arranged between two adjacent ceramic layers and has a folded shape, a connecting circuit which is arranged between the adjacent heating circuit and the ceramic laminated plate, and a plurality of through holes which are uniformly distributed and penetrate through the heating circuit and the connecting circuit, the width of the connecting circuit is larger than that of the heating circuit, and the two ends of the connecting circuit extend to the two sides of the ceramic laminated plate; the two ends of the heating circuit extend to the two sides of the ceramic laminated plate. The heating circuit is arranged between the upper-layer ceramic laminated plate and the lower-layer ceramic laminated plate, voltage is applied to the heating circuit, flowing current is generated, electric energy is converted into heat energy, the heating circuit generates heat, and the heat is transmitted outwards through the upper-layer ceramic laminated plate and the lower-layer ceramic laminated plate. And enabling the surface of the ceramic laminated plate to reach a preset temperature.

The invention relates to the technical field of engineering ceramic materials, in particular to a method for preparing zirconium oxide toughened aluminum oxide ZTA ceramic through a low-temperature sintering method. The method comprises the following steps: preparing a ZTA ceramic sintering aid and a ZTA ceramic dry pressing material, molding the dry pressing material, drying, and sintering at 1200-1300 DEG C. The sintering aid is prepared from boric acid, sodium carbonate, potassium carbonate, calcium fluoride, bismuth trioxide, ammonium dihydrogen phosphate, antimony trioxide, silicon dioxide and other raw materials according to a certain proportion. The ZTA ceramic can be compactly sintered at 1250-1300 DEG C, the principal crystalline phase in the sintered ZTA ceramic is the same as the principal crystalline phase of the traditional ZTA ceramic which is not added with the sintering aid after high-temperature sintering, the principal crystalline phases are alpha-Al2O3 phase, tetragonal phase zirconia (t-ZrO2) phase and monoclinic phase zirconia (m-ZrO2) phase, and no other impurity phase is generated. After the ZTA ceramic prepared by the process disclosed by the invention is sintered at 1250 DEG C, the density of the ZTA ceramic reaches 97.8%, and the bending strength of the ZTA ceramic is 478 MPa.

The invention relates to a Ti5Si3 / ZrB2 composite material which comprises Ti5Si3 intermetallic compound powder, and a Ti5Si3 intermetallic compound is used as a reinforcing and toughening phase; zrB2 is used as a matrix of the ZrB2 powder; al2O3 powder and Y2O3 powder are added as sintering aids; adding fine silicon powder as a sintering aid; the hot pressing sintering method comprises the following steps: preparing Ti-Si intermetallic compound powder by adopting a mechanical alloying process; the Ti-Si intermetallic compound powder prepared in the first step is subjected to heat treatment to prepare Ti5Si3 powder, and the Ti5Si3 powder and ZrB2 powder are mixed; the preparation method comprises the following steps: preparing Ti5Si3 / ZrB2 composite powder; preparing a compact Ti5Si3 / ZrB2 composite powder prefabricated blank through a pressure forming process; a Ti5Si3 / ZrB2 composite material is prepared through a hot pressed sintering process; the hot pressing sintering method has the advantages that the preparation efficiency is high, the preparation process is simple, the Ti5Si3 / ZrB2 composite material product can be rapidly sintered and manufactured, and the prepared Ti5Si3 / ZrB2 composite material has high density and high mechanical property.

This invention provides a method for preparing carbon-coated lithium iron phosphate, comprising: S1: providing a lithium source solution, a ferrous source solution, and a phosphorus source solution; S2: mixing the lithium source solution, the ferrous source solution, and the phosphorus source solution to obtain a first solution, adjusting the pH of the first solution to alkaline, to obtain a second solution; S3: performing vacuum distillation on the second solution, during which an organic carbon source solution is added to the second solution until the volume of the reaction solution no longer decreases, to obtain a third solution; S4: heating the third solution to a preset temperature, maintaining the preset temperature, and introducing a coolant into the third solution to obtain a fourth solution; S5: drying the fourth solution to obtain the carbon-coated lithium iron phosphate. This method can reduce energy loss during the preparation process, reduce raw material costs, and improve the cycle life of lithium iron phosphate battery modules.

The invention provides high-entropy oxide ceramic with wave-absorbing and heat-insulating properties and a preparation method of the high-entropy oxide ceramic. The chemical formula of the ceramic is ABO3, and the A site contains two elements of Bi and Na and simultaneously contains any two of Ca, Sr and Ba; and the B site comprises any two of Sn, Ti, Zr and Ce. All the elements are equimolar in respective positions. The preparation method comprises the steps of ball milling, drying, calcining, tabletting, microwave sintering and the like. Compared with the prior art, the high-entropy oxide ceramic provided by the invention has excellent wave-absorbing and heat-insulating properties and has the advantage of low preparation cost.

The present application relates to a sintering raw material steam preheating system, which belongs to the field of sintering technology, and includes: a softened water supply device; a steam drum, wherein the upper part of the steam drum is provided with a softened water inlet, a steam supply port and a water return port, and the lower part of the steam drum is provided with a water supply port; a steam preheater, which is used to steam preheat the raw materials in the small ore tank; a water-cooled igniter, which is arranged above the sintering machine trolley, and the water-cooled igniter includes a water-cooled box and a burner, the water-cooled box has a first through hole penetrating from the upper surface to the lower surface, and the burner head can be inserted into the first through hole, the side wall of the water-cooled box is provided with a cold water inlet, and the upper part of the water-cooled box is provided with a hot water outlet. The sintering raw material steam preheating system provided by the present application can improve the sintering fuel economy and reduce the sintering cost.