88results about How to "Speed up corrosion" patented technology

The invention discloses a remediation method for hexavalent chromium polluted soil and underground water. The remediation method comprises the following steps: step (10): putting a pile machine in place; step (20): independently injecting acidified bentonite slurry loaded with active carbon powder and bentonite slurry loaded with zero-valent iron powder into the ground by using stirring and injection equipment and stirring; step (30): detecting the reduction effect of hexavalent chromium in the soil and the underground water; step (40): injecting bentonite and industrial waste alkali mixed slurry; and step (50): detecting the remediation effect of hexavalent chromium and trivalent chromium. By virtue of the remediation method, remediation chemicals can be in direct and sufficient contact with the soil and the underground water to react, so that the hexavalent chromium in the soil and the underground water can be completely reduced; meanwhile, an indissolvable stable compound is formed by the trivalent chromium and the useless loss of the remediation chemicals can be reduced; the potential of hydrogen of a stratum is balanced; and the remediation method is suitable for the large-area hexavalent chromium polluted stratums different in potential of hydrogen and moisture content.

The invention provides a reaction vessel and a corrosion testing system. the reaction vessel comprises a heating device, a vessel body arranged in the heating device, a vessel cover for sealing the vessel body, a tension shaft which passes through the vessel cover and is inserted into the vessel body, a transmission gear connected with the tension shaft, and a three-electrode system. The three-electrode system comprises a working electrode, a reference electrode and an auxiliary electrode. The vessel cover is provided with a first electrode port and a second electrode port. The reference electrode is inserted into the vessel body through the first electrode port. The auxiliary electrode is inserted into the vessel body through the second electrode port. The work electrode is arranged at one end of the tension shaft, one end of which is the end positioned inside the vessel body. The inside of the tension shaft is a hollow structure.

The invention provides a preparation method for graphene oxide modified polymer cement-based anti-corrosive paint. The preparation method comprises the following steps: performing carboxylation of a graphene oxide; synthesizing graphene oxide modified polyacrylate emulsion; and preparing the graphene oxide modified polymer cement-based anti-corrosive paint. The paint prepared by the preparation method has the advantages of high toughness, high bonding strength and high compactness and the like of an organic polymer, and has high mechanical strength and high weather resistance and durability ofa special cement-based material. The graphene oxide is used for modifying the polymer cement-based anti-corrosive paint, a mechanical property of a polymer film is further optimized, interface compatibility and a bonding force of a polymer organic component and a cement-based inorganic component are improved, thereby a paint microscopic structure is optimized, and anti-corrosion performance and stability are improved.

The invention discloses a medical degradable Fe-Mg-X alloy material and a preparation method thereof. The alloy material comprises the following components by weight percentage: Mg (greater than or equal to 2% and less than or equal to 10%), X (greater than 0% and less than 2%), and the balance of Fe. The invention further relates to the preparation method of the alloy material. As the alloy element Mg having a larger electrode potential difference from the matrix Fe is added, the kinetics of electrochemical corrosion of an Fe-Mg alloy matrix is improved significantly; the corrosion degradation rate of the Fe-Mg alloy matrix in an organism environment is increased greatly; and the component X having biological effects of promoting bone tissue repair, diminishing inflammation, sterilizing and the like is further added. The medical degradable Fe-Mg-X alloy material is a multielement degradable iron-base alloy material consisting of the complete-biosafety human nutrient elements Fe, Mg and X, has good biocompatibility, higher mechanical property and appropriate corrosion rate, has an important application potential in the field of medical degradable implantation materials, and has a better application prospect.

The invention discloses an electric chemical method for accelerated corrosion on a stainless steel welding seam region. The method comprises the following experiment steps of work electrode preparation, stable corrosion potential test and electrochemical accelerated corrosion. The method provided by the invention solves the problems that the existing electrochemical accelerated corrosion cannot beused for accelerated corrosion on stainless steel to obtain the practical corrosion morphology. The test method can be used for performing electrochemical accelerated corrosion on the stainless steelregion; the corrosion speed of the stainless steel is accelerated; the corrosion resistance performance weakness relationship of different regions of the welding seam in the corrosion media can be judged; the correct judgment is made on the corrosion behavior of a welding joint used in engineering in the use environment.

A high speed silicon etching method, comprising the steps of installing a processed body (W) with a silicon area in contact with a processing space in a processing chamber holdable in a vacuum, leading etching gas into the processing chamber to generate a gas atmosphere with a gas pressure of 13 to 1333 Pa (100 mTorr to 10 Torr), and applying a high frequency power to the gas atmosphere to generate a plasma, whereby a silicon area etching speed can be more increased because the sum of the quantity of charged particles such as ions and the quantity of radicals are increased in the plasma.

The invention discloses an etching machine, wherein an etching groove, a flushing tank and a driving device are arranged in a chassis; a basket is connected to the driving device, a first rotary shaft and a second rotary shaft are arranged on the basket, and the driving device drives the basket to rotate around the first rotary shaft and drives the first rotary shaft to rotate around the second rotary shaft. The etching machine disclosed by the invention improves the corrosive uniformity and corrosive speed as well as the uniformity of backwashing and the flushing speed.

The invention relates to a corrosive agent of an HfSiON high-K gate dielectric material and a corrosion method by using the corrosive agent, which belong to the technical field of integrated circuit manufacture. The corrosive agent comprises 0.19-4.83 percent by weight of hydrofluoric acid. The corrosion method by using the corrosive agent comprises the following steps: forming the HfSiON high-K gate dielectric material on an Si substrate, an Si / SiO2 interface layer or Si / SiON interface layer, and soaking the HfSiON high-K gate dielectric material in the corrosive agent for wet method corrosion. The corrosive agent is used for carrying out corrosion on the HfSiON high-K gate dielectric material and can reduce the hydrolysis of the hydrofluoric acid, thereby the corrosion speed of the HfSiON high-K gate dielectric material is improved, the corrosion speed of field oxide region SiO2 can be reduced, and the selection ratio of HfSiON to the field oxide region SiO2 can be further improved.

The invention relates to the technical field of biological materials, in particular to a surface modification method of medical magnesium alloy. The surface modification method of the medical magnesium alloy aims at resolving the problems that the bonding force between a magnesium alloy base body and a coating is small, the magnesium alloy base body is prone to falling off, and the decomposition speed is too high in the later implantation period of the magnesium alloy. The surface modification method includes the steps that firstly, medical magnesium alloy materials are ground through abrasive paper, cleaned and then aired; secondly, cleaned medical magnesium alloy materials are put into a high-current pulse electron beam device to be radiated; thirdly, calcium and phosphorus electrolyte is prepared, and a hydroxyapatite coating is prepared on the surface of the medical magnesium alloy materials in a pulse electrodeposition mode. The surface modification method of the medical magnesium alloy improves the biological activity of the surface of the magnesium alloy, improves the corrosion resistance in the later implantation period of the magnesium alloy, obviously improves the bonding force between the hydroxyapatite and the base body, and overcomes the problems that the service life of a medical magnesium alloy implant is short, and the hydroxyapatite coating is prone to falling off.

The invention belongs to the technical field of additive manufacturing, and particularly discloses a channel powder removal method for a high-energy-beam 3D printing cooling board and a product. The method includes the following steps of firstly, removing part of residual powder in channels of the high-energy-beam 3D printing cooling board, and coating the outer surface of the cooling board with anti-corrosion paint; secondly, washing the cooling board through an ultrasonic washing / chemical milling combined process so as to thoroughly remove the rest of powder in the channels, and meanwhile performing polishing treatment on the surfaces of the channels; and thirdly, removing residual chemical corrosive liquid in the channels of the cooling board and the anti-corrosion paint coated on the outer surface of the cooling board, and performing drying to obtain the required cooling board. By means of the method, residual non-molten powder in the channels of the cooling board can be efficiently and thoroughly removed, meanwhile the quality of the inner surfaces of the channels is improved, and the problems that removing is not thorough and the inner surfaces of the channels still need to be subjected to after-treatment by means of an existing powder removing technology are solved.

The invention provides a thin film microcircuit cutting method based on a sacrificial layer. The method solves the problem that a thin film microcircuit falls off during cutting, reduces the situation that the edge of the circuit is cracked curing cutting, can improve the warping of circuit conduction bands on the edges of the cut circuit and can improve the cutting quality of the circuit. The cutting method comprises the steps of providing a complete thin film circuit with at least one side which is fully metallized by Au; electroplating an Ni layer on the Au fully-metallized side of the thin film circuit; bonding the thin film circuit substrate plated with the Ni layer on a glass substrate by using epoxy resin glue; cutting the thin film circuit substrate; and eroding the Ni layer. Since the bonding strength of the epoxy resin glue is high, the thin film circuit does fall off during cutting, the vibration displacement of the ceramic thin film circuit substrate during cutting is small and the situation that the ceramic thin film circuit substrate is cracked during cutting can be reduced.

The invention discloses an additive for alkali polishing of a silicon wafer. The additive comprises the following components in parts by mass: 0.5-2 parts of gelatin, 1-2 parts of acrylamide, 0.5-2 parts of quaternary ammonium salt, 1-3 parts of sodium p-aminosalicylate, 4-5 parts of ammonium thiocyanate, 3-4 parts of alkyl glycoside, 0.1-0.3 part of sodium benzoate and 81.7-89.9 parts of water. When the additive is added into a polishing solution for alkali polishing of the silicon wafer, the reaction rate of a [111] / [100] surface can be changed, the reaction rate of a [100] surface can be inhibited, the flatness of the back surface of the silicon wafer can be changed, a relatively rough small-size tower footing structure can be formed on the back surface of the silicon wafer after alkali polishing, and the reflectivity of the back surface of the silicon wafer can be reduced to a small extent, so that back slurry contact is facilitated; and the slurry tension is improved, the FF can be improved, and the electrical performance of a battery piece is improved.

The invention relates to the field of foundation treatment, in particular to a spiral self-drilling steel pile capable of being reinforced through diameter increasing, and a construction method of thespiral self-drilling steel pile. The spiral self-drilling steel pile capable of being reinforced through diameter increasing comprises a spiral pile with a center shaft being provided with spiral blades, and further comprises a lengthening rod composed of one or more lengthening sections; the upper end of the spiral pile is connected with the lower end of the lengthening rod, wherein diameter-increasing guiding discs are arranged on the one or more lengthening sections in the lengthening rod; and the diameter-increasing guiding discs are each in a funnel shape, openings of the diameter-increasing guiding discs face upwards, and the bottoms of the diameter-increasing guiding discs are connected with the rod wall of the lengthening rod in a sealed mode. Through pile side grouting, slurry reaches the diameter-increasing guiding discs to form a reinforced body, the vertical limit bearing capacity, critical buckling load and transverse carrying capacity of the pile are improved, and compared with the mode for improving the bearing capacity through methods of increasing the number of the blades, the diameter of the blades and the pile length, the more economical and applicable effects are achieved so as to enable a foundation to be more stable.

The copper base material for contactor features its components including tungsten carbide 0-10 wt%, Y and / or Zr 0.1-1 wt% and La 0.01-2 wt% except Cu. The material has high anticorrosive and antioxidant performance, low resistivity, no pollution, low production cost and excellent performance.

The invention relates to the technical field of corrosion inhibitors, particularly a scale and corrosion inhibitor which is composed of the following components in percentage by weight: 30-40% of amino trimethylene phosphonic acid, 15-20% of hydroxyethidene diphosphoric acid, 20-30% of sodium epoxy alkylcarboxylate, 1-3% of polyacrylic acid, 1-3% of hydrolytic polymaliec acid and the balance of water. The scale and corrosion inhibitor has obvious action on circulating water with high calcium content, the adhesion rate of the carbon steel experiment tube is lowered to 5.75mcm, and the corrosion rates for carbon steel and stainless steel are obviously enhanced, wherein the corrosion rate for carbon steel is lowered to 0.00901mm / a, and the corrosion rate for stainless steel is lowered to 0.0000891mm / a.

The invention discloses a lead-calcium alloy for a positive grid, and a preparation method thereof. The lead-calcium alloy is prepared from the following components: calcium, aluminum, tin, bismuth, rare earth, modified graphene and the balance lead. The lead-calcium alloy for the positive grid is high in corrosion resistance and tensile strength, and the service life of a storage battery can be effectively prolonged; according to the lead-calcium alloy, the content of the calcium in the lead-calcium alloy is controlled to be 0.09%-0.096%, and the anti-corrosion effect can be remarkably improved; when the content of the calcium is 0.094%, the anti-corrosion effect is optimal; when the content of the calcium is higher than 0.096%, in the using process, the growth speed in the length-width direction is increased, the corrosion speed of the alloy is increased, and accordingly the service life of a battery is shortened; when the content of the calcium is lower than 0.09%, the internal crystal structure of the alloy is thickened, and the intercrystalline corrosion speed is increased; and the positive grid can be rotted and broken more quickly in the use process, and consequently the service life of the battery is shortened.

The invention discloses a medical degradable Fe-Mg-X alloy material and a preparation method thereof. The alloy material comprises the following components by weight percentage: Mg (greater than or equal to 2% and less than or equal to 10%), X (greater than 0% and less than 2%), and the balance of Fe. The invention further relates to the preparation method of the alloy material. As the alloy element Mg having a larger electrode potential difference from the matrix Fe is added, the kinetics of electrochemical corrosion of an Fe-Mg alloy matrix is improved significantly; the corrosion degradation rate of the Fe-Mg alloy matrix in an organism environment is increased greatly; and the component X having biological effects of promoting bone tissue repair, diminishing inflammation, sterilizing and the like is further added. The medical degradable Fe-Mg-X alloy material is a multielement degradable iron-base alloy material consisting of the complete-biosafety human nutrient elements Fe, Mg and X, has good biocompatibility, higher mechanical property and appropriate corrosion rate, has an important application potential in the field of medical degradable implantation materials, and has a better application prospect.

The invention relates to dye wastewater disposal, in particular to a method for preparing a catalyst for disposing the combined modification of dye wastewater. The method specifically comprises the following steps: 80 to 200 ml of hydrazine hydrate is added into 150 to 400 ml of a copper sulfate pentahydrate solution in a stirring state, is aged for 15 to 35 minutes, is subsequently added with 15 to 30 grams of industrial iron powder, is stirred for 2 to 5 minutes and is filtered to obtain sediment; and the sediment is washed through distilled water and is dried to obtain the catalyst. The method effectively combines two methods of internal electrolysis and photocatalysis together to prepare the high-efficient, economic and innoxious catalyst and has the advantages of stable performance, high efficiency, wide applicability, no pollution, friendliness to environment, thereby strengthening the dye wastewater disposal. The catalyst has a simple preparation process, mild reaction condition, and cheapness and wide source of raw materials.

The invention discloses a martensite stainless steel with antibacterial property and an application thereof in the industry of hardware. Through researches on the aspect of stainless steel material and how to make use of antibacterial property and how to add Cu into stainless steel material and through adding appropriate Cu into martensitic stainless steel as well as through special thermal treatment (high-temperature tempering is adopted so as to obtain relatively good organizational structure, endowing material with the properties of relatively high intensity, good toughness, corrosion resistance and antibacteria), Epsilon-Cu phase can be precipitated dispersedly from stainless steel and then coppor ion can be dissolved out in water; therefore, the obtained stainless steel has good antibacterial property. The addition of Cu can cause grain of stainless steel to be thinned, have relatively high intensity and hardness, reduce passivation range and increase corrosion rate slightly. The antibacterial effect of the martensite antibacterial stainless steel on staphylococcus aureus is more than 99 percent, and the effect on escherichia coli reaches 97 percent; therefore, the stainless steel of the invention can not only improve the performance of the stainless steel material, but also effectively inhibit the breeding of bacteria. The martensite stainless steel with antibacterial property is mainly applied to hardware products.

The invention discloses a dormancy breaking device for improving the germplasm germination rate of Artemisia wellbyi, which comprises a base, a stirring barrel, a first motor, a first electric valve, a seed discharging mechanism and a second motor, first rolling wheels are fixed to the lower end face of the base, the stirring barrel is fixed to the tops of supporting plates, the first electric valve penetrates through the top of the stirring barrel and is connected with an annular pipeline, the seed discharging mechanism is fixed to the bottom of the stirring barrel, a collecting box is arranged on the lower side of the seed discharging mechanism, a cleaning channel is fixed to one side of the collecting box, and a draining plate is embedded in the bottom of the cleaning channel. According to the dormancy breaking device for improving the germplasm germination rate of the Artemisia wellbyi, Artemisia wellbyi seeds make contact with sheep gastric juice, the sheep gastric juice corrodes epidermis of the Artemisia wellbyi seeds, then under the action of a stirring rod, the corrosion speed of the epidermis of the Artemisia wellbyi seeds can be increased, and compared with the mode of mechanically abrading the epidermis and the dormancy breaking agent, the mode cannot damage the interiors of the Artemisia wellbyi seeds.

The invention discloses an anti-corrosion resistance reduction agent for a copper ground grid. The anti-corrosion resistance reduction agent for the copper ground grid is characterized by being made from, by weight, 2-6 parts of sodium bicarbonate, 0-2 parts of sodium carbonate and 80-120 parts of water. The anti-corrosion resistance reduction agent avoids loss of water in soil to enable soil resistivity to be relatively stable, and resistance reduction is realized while chemical corrosion and electrocorrosion of copper pipes and steels are avoided.

The invention provides a surface treatment method for improving biological activity of medical degradable zinc alloy. The surface treatment method comprises the following steps of surface pretreatment, chemical polishing and compound activating treatment, after treatment, the biological activity of the zinc alloy can be remarkably improved, which mainly reflects that the surface hydrophily of thematerial is remarkably improved, and the surface can be subjected to uniform compact Ca-P layer biogenic deposit. Pure zinc which is not subjected to any treatment is put in simulated body fluid (SBF), and the surface of the pure zinc is hard to be subjected to Ca-P layer deposit; and the electric current density of zinc alloy subjected to treatment is reduced, and the coating impedance module value is decreased. The surface treatment effect is remarkable, the method is simple, operability is high, the equipment requirement is not high, the cost is low, and the method is suitable for mass production.

The invention discloses a tire mold. The tire mold structurally comprises a lower mold, an upper mold, air holes and guide blocks, wherein the outer wall of the lower mold is movably clamped to the inner wall of the upper mold, the air holes run through the outer wall of the upper mold, and the guide blocks are welded to the inner wall of the upper mold. When a tire is vulcanized in a high-temperature environment, an included angle eliminating device is driven to collect burnt particles at included angles between pattern blocks to prevent the situations that the burnt particles accumulate at the included angles between patterns for a long time and corrode the surface of the mold, accordingly the surface is uneven, normal use of the mold is affected, a required shape cannot be achieved in the vulcanization process, and the service life of the mold is shortened. When rollers rotate, brush blocks on the surfaces of the rollers collect the particles scraped by a scraper to prevent the situations that the particles are left on the bottom surfaces of the pattern blocks, slowly accumulate and make the rollers stuck, normal moving of an eliminating ring on the bottom surfaces between the pattern blocks is affected, the particles cannot be collected in time and the corrosion speed of the bottom surfaces is increased.

The invention discloses a carbon and silicon separation technology of nascent polysilicon and a use device of the technology. A difference of reaction rates outside and inside a solution is achieved by a rotation method so as to separate the nascent polysilicon from a graphite fixture; a rotation separation structure comprising an electrochemical reaction tank, a mechanical rotation device, an ultrasonic vibration device, a corrosive liquid cleaning device and a power supply is designed in order to better achieve the technology. The technology achieves the difference of the reaction rates inside and outside the solution by rotating a carbon head material; the carbon head material of the polysilicon is separated; the corrosion of the polysilicon outside the solution is reduced at the same time; and the weight reduction of the polysilicon is decreased.

The invention discloses a laser electrochemical combined machining device with dual flow channels. The device comprises an optical lens, the inner annular flow channel, the outer annular flow channel,a through hole of the inner annular flow channel, a through hole of the outer annular flow channel, an annular electrode, an inner ring opening and an outer ring opening. The optical lens is locatedon the inner side of the inner annular flow channel, the inner annular flow channel is located on the inner side of the outer annular flow channel, the through hole of the inner annular flow channel is communicated with the inner annular flow channel, the through hole of the outer annular flow channel is communicated with the outer annular flow channel, the inner ring opening is communicated withthe inner annular flow channel, and the outer ring opening is communicated with the outer annular flow channel. The inner annular flow channel and the outer annular flow channel are used for conveyingchemical liquid for corroding slag and fragments stacked in the laser machining process; the annular electrode is located between the inner ring opening and the outer ring opening, and the potentialdifference exists between the annular electrode and a device to be machined. By adopting the unique design of the dual annular flow channels and the annular electrode, the application range of the chemical liquid is controlled, and the defects that a volcanic vent exists in the existing laser machining process, and the chemical corrosion precision is not good enough are eliminated.

The invention discloses an observation method of platinum rhodium alloy metallographic structures. The observation method comprises following steps: 1, a cubic platinum rhodium alloy sample is obtained via cutting of a workpiece, one plane of the cubic platinum rhodium alloy sample is taken as a metallographic observation plane, and the platinum rhodium alloy sample is subjected to insetting using an insetting machine; 2, after insetting, the metallographic observation plane of the platinum rhodium alloy sample is subjected to polishing using a metallographic sample pre-polishing machine; 3, after polishing, the metallographic observation plane of the platinum rhodium alloy sample is subjected to mechanical polishing using a polishing machine until no obvious scratches or stains are observed on the metallographic observation plane; and 4, after mechanical polishing, the platinum rhodium alloy sample is delivered into a corrosion container containing a corrosive liquid, and after immersion corrosion, observation of the platinum rhodium alloy metallographic structure is carried out. The observation method is simple; requirements on experiment equipment and operation staff are low; repeatability is high; the observation method is suitable for observation of platinum rhodium alloy metallographic structures; alloy loss in preparation of the platinum rhodium alloy sample is extremely low; and heavy metal loss and waste are reduced.

The invention relates to a corrosion solution for TiW films and a corrosion method thereof. In order to solve the defects in the process of corroding TiW films by using the conventional hydrogen peroxide, components and ratios of the corrosion solution are innovatively designed; a catalyst which is ammonium hydroxide and a stabilizer which is phosphoric acid are added into the hydrogen peroxide; meanwhile, by virtue of a large quantity of tests, the ratio of the catalyst to the stabilizer to hydrogen peroxide is optimally designed; the corrosion process conditions are optimized; the stability, the corrosion speed and the corrosion capability of the corrosion solution are obviously improved; the high-quality corrosion effect is guaranteed; a large quantity of tests show that by virtue of the adoption of the corrosion solution and the corrosion method, the corrosion success rate reaches 100%; the service life of the corrosion solution is prolonged by three times or more; the production operation is facilitated; the corrosion quality is guaranteed.

The invention discloses a device and method for studying the performance of a steel pipe concrete compression-bending member under loads and corrosion, and belongs to the technical field of structural engineering. The device is composed of a loading mechanism, a corroding mechanism and a measuring mechanism. A fixed end hinge support and a free end hinge support are arranged on a support. The two ends of the steel pipe concrete compression-bending member are hinged to the fixed end hinge support and the free end hinge support. A force transmitting plate is arranged outside the free end hinge support. After a pull rod penetrates through the force transmitting plate and the fixed end hinge support, the two ends of the pull rod are connected with nuts. The outer end of the pull rod is connected with the corresponding nut after penetrating through a counter force plate. A jack is arranged between the force transmitting plate and the counter force plate. The steel pipe concrete compression-bending member is sleeved with a negative plate. A negative electrode of an external DC power supply is connected with the negative plate, and a positive electrode is connected with a steel pipe of the steel pipe concrete compression-bending member. The method includes the steps of conducting a test in the initial loading stage, conducting a test in the electrochemical corroding and long-term loading stage, conducting a test in the breakage loading stage, and drawing the eccentric pressure and span center deflection stress full-process curve of the steel pipe concrete compression-bending member.

The invention discloses a device for treating sticky sand on the surface of castings, which comprises a casing and an annular plate; Pad connection; there is a fixed plate inside the casing, the fixed plate is connected to the motor, the motor is connected to the connecting plate, the connecting plate is connected to the telescopic device, and the telescopic device is connected to the high-pressure water spray device; there is a protective shell on the inner wall of the casing. There is a DC power supply inside the protective case; the negative pole is connected to the anode connector, and the anode connector is vertically arranged. One end of the pressure elastic member is against the bottom of the DC power supply, and the other end is against the top of the anode connector. There is a through hole on the protective case, and the anode connector The cylindrical connector of the DC power supply is electrically connected to the cathode connector through the connecting wire; the cylindrical connector of the cathode connector passes through the through hole of the protective shell. The invention improves the efficiency of cleaning the sand sticking area of ​​the casting and reduces the harm to operators.