17 results about "Erosion" patented technology

A slurry composition for chemical mechanical polishing (CMP) of a phase-change memory device is provided. The slurry composition comprises deionized water, a nitrogenous compound, and optionally abrasive particles, an oxidizing agent, or a combination thereof. The slurry composition can polish a phase-change memory device at a high rate, can achieve high polishing selectivity between a phase-change memory material and a polish stop layer (e.g., a silicon oxide film), and can minimize the occurrence of processing imperfections (e.g., dishing and erosion) to provide a high-quality polished surface. Further provided is a method for polishing a phase-change memory device using the slurry composition.

The invention belongs to the technical field of a refractory castable, and particularly relates to a castable for a blast-furnace tapping channel and a preparation method thereof. The castable comprises the following components: 55-80wt% of fused brown corundum, 8-21wt% of silicon carbide, 0.01-5wt% of carbon source, 2-8wt% of alpha-alumina micro powder, 1-7wt% of fused white corundum, 0.5-5wt% of silica powder, 1-5wt% of calcium aluminate cement, 0.3-4wt% of elemental silicon powder, 0.01-0.4wt% of water reducing agent, 0-0.2wt% of organic fibers and 0-0.2wt% of aluminum powder. The preparation method comprises the steps of dry-blending the components for 10-180 seconds, additionally adding water accounting for 4-6wt% of the raw materials, and stirring for 1-8 minutes so as to obtain the castable. Carbon nanotubes are introduced to the castable for the tapping channel so as to partially or totally replace spherical asphalt and be uniformly distributed in the castable, and can be filled into tiny gaps so as to improve the compactness of the castable, so that the anti-erosion and anti-scouring properties of the castable are improved, toxic smog formed in the process of baking the spherical asphalt is reduced, and the body injury of workers and the environmental pollution caused by the toxic smog are reduced; the castable has the characteristics of excellent properties, long service life and environmental friendliness.

The present invention discloses a sulfur attack resistant steel and its smelting process. Said sulfur attack resistant steel can be used as steal for seamless steel conduit wiring tube, possesses favorable economy and excellent welding performance, can be applied widely for seamless steel conduit wiring tube for oil gas conveying in high acidic oil and gas fields. Said steel has the chemical constituent as follows (based on weight percentage ): C 0.08 -0.14%, Si 0.20 -0.30%, Mn 1.25 -1.45%, Nb 0.03 -0.05, Al 0.02 -0.05,Ti 0.02-0.05, and the rest is Fe and impurities. The present invention possesses the beneficial effects that the matching between the low carbon equivalent weight and the high strength in lateral direction and vertical direction is realized by adding two microalloy elements (Nb and Ti ) and introducing Al, as alloying element, into the sulfur attack resistant steel, and then said sulfur attack resistant steel possesses favorable economy and excellent welding performance, can be applied widely for seamless steel conduit wiring tube for oil gas conveying in high acidic oil and gas fields.

A process for preparing thermoplastic polyamide compositions that exhibit decreased melt flow and similar physical properties in comparison with conventional systems, in which polyamide is melt-blended with at least one organic acid, and, optionally, one or more additional components, such that the organic acid has a melting point that is no lower than about 10° C. less than the onset temperature of the melting point endotherm of the polyamide. The process results in decreased levels of corrosion and erosion of standard processing equipment in comparison with other processes for decreasing the melt flow while maintaining the physical properties of thermoplastic polyamide compositions. Articles of manufacture made according to the instant process and composition described therein are also disclosed.

Windblown particles are controlled by a porous tubular control device formed from a sheet of netting material having a plurality of interconnected webs which define a plurality of apertures. The sheet of netting material assumes a three-dimensional tubular configuration. The tubular configuration is oriented to confront the wind and cause the wind blown particles to flow through the apertures of two vertically oriented portions of the tubular netting sheet to create aerodynamic drag and turbulence altering effects which stabilize, deposit and retain the windblown particles. The control device is effective in preventing the wind erosion of snow, sand or dust over an area much greater than the area occupied by the device.

The invention provides a method for hyperspectral inversion of soil erosion based on outdoor rainfall and indoor soil. The method comprises the following steps: performing indoor spectrum test, outdoor spectrum verification and artificial rainfall erosion test to obtain soil physicochemical parameter indexes; analyzing and screening the soil physicochemical parameter indexes to establish a hyperspectral feature spectrum library of single factor soil parameters; and establishing a soil physicochemical parameter-based soil erosion hyperspectral inversion model through combining the correlation degree of all the soil physicochemical parameters and the soil erodibility and a hyperspectral inversion technology thereof according to the hyperspectral feature spectrum library. The hyperspectral spectral library of the single factor soil parameters is established through the indoor spectrum test, outdoor spectral verification and artificial rainfall erosion test in order to quickly, accuratelyand efficiently establish the hyperspectral inversion model of soil erosion.

The invention relates to the technical field of coatings, and concretely relates to a photovoltaic glass panel surface layer anti-damping coating and a preparation method thereof. The photovoltaic glass panel surface anti-damping coating comprises, by weight, 8-20% of fluorosilicone copolymer resin, 5-12% of silica, 2-8% of a dispersant, 1-5% of a penetrant, 0.5-2% of an antifoaming agent, 1.5-5% of a leveling agent, and the balance of a diluent. The photovoltaic glass panel surface anti-damping coating has a water repellency reaching 95%, has a great water contact angle reaching 130 DEG or more and has a rolling angle being less than 20 DEG, so the coating has a good self-cleaning ability and a light transmittance of 98% or more under rain erosion, and also can guarantee the photovoltaic conversion rate on the premise of a self-cleaning effect. The preparation method of the photovoltaic glass panel surface anti-damping coating has the advantages of simplicity, low cost and high efficiency.

The invention discloses a traditional Chinese medicine composition for treating cervical erosion. The traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: 10-15 parts of fallopia japonica, 10-15 parts of cyrtomium fortunei, 5-10 parts of groundsel, 15-20 parts of sophora flavescens, 12-18 parts of Chinese pulsatilla root, 5-10 parts of frankincense, 8-14 parts of cuttlebone, 10-15 parts of aloe leaf, 6-12 parts of shaddock peel, 16-22 parts of gallnut, 5-10 parts of acacia catechu, 10-15 parts of plantain herb, 20-25 parts of mother chrysanthemum, 4-9 parts of fig leaf, 18-24 parts of lithospermum, 5-10 parts of calendula, 9-16 parts of rheum officinale, 12-18 parts of subprostrate sophora, 5-10 parts of nauclea officinalis leaf and 10-15 parts of houttuynia cordata. The traditional Chinese medicine composition has the effects of clearing away heat and drying dampness, inhibiting bacteria and killing bacteria, diminishing inflammation and stopping pain, promoting blood circulation to remove blood stasis and removing slough and promoting growth of tissue regeneration, is obvious in curative effect, does not have a toxic or side effect, does not have an adverse reaction and symptoms, is high in cure rate, difficult to reoccur, safe and reliable and is worthy of promotion and popularization.

The invention discloses a valve seat and valve body all-metal sealing structure. A valve seat is fixed to a bottom plane of a valve seat hole of a valve body by a retainer ring to be in contact seal with the bottom plane of the valve seat hole of the valve body, or the valve seat is fixed to the bottom plane of the valve seat hole of the valve body by a pressure plate and a screw to be in contact seal with the bottom plane of the valve seat hole of the valve body. The valve seat and valve body all-metal sealing structure has the advantage that 'zero' leakage can be guaranteed under the condition of powerful erosion of media or high-temperature thermal expansion.

The invention discloses a powdered medicine for treating oral erosion, and relates to the technical field of drugs for treating the oral erosion. The powdered medicine is prepared from the following components: pearl powder, indigo naturalis, cinnabar, borneol, borax, nystatin and composite vitamin B, wherein the pearl powder has effects of convergence and tissue regeneration promotion; the indigonaturalis and the borneol have effects of clearing away heat and toxins and cooling the blood; the cinnabar can inhibit or kill skin bacteria and parasites; the borax has effects of inhibiting bacteria, preventing putrefaction and protecting the skin mucosa; the nystatin is a polyene type broad-spectrum antimicrobial agent having an effect of inhibiting the activity of fungus; the composite vitamin B is an important assistant for body metabolism. The powdered medicine disclosed by the invention can sterilize and detoxify an anabrotic wound through the mutual synergistic effect of all the components and also repair the wound, and has the advantages of an obvious curative effect and a high effective rate.

The invention discloses a device for filling lost soil in water and soil erosion under asphalt pavement. The device includes a base. The device is characterized in that the base is located on the ground, a perfusion fixing mechanism is arranged above the base, a perfusion mechanism is arranged above the perfusion fixing mechanism, a drilling mechanism is arranged on the lower portion of the perfusion mechanism, and the upper portion of the base is provided with a controller and a battery box. The power input end of the controller is electrically connected with the power output end of the battery box, and the power output end of the controller is electrically connected with a perfusion lifting linear motor, a perfusion extruder, a feeding linear motor, a pressure sensor and the drilling mechanism. The signal output end of the controller is electrically connected with the perfusion lifting linear motor, the perfusion extruder, the feeding linear motor and the drilling mechanism, and thesignal input end of the controller is electrically connected with the pressure sensor and the drilling mechanism. The device has the advantages that the structure is simple and the practicability is high.