5 results about "Galvanic anode" patented technology

The invention discloses a galvanic corrosion risk assessment method and device for a dissimilar metal lap joint structure, and relates to the technical field of corrosion protection, and the method comprises the steps: obtaining standard polarization curves of a plurality of metal materials for the power system design of aviation equipment, so as to form a polarization curve library; determining a first metal material and a second metal material which form the to-be-evaluated dissimilar metal lap joint structure; acquiring a first standard polarization curve of the first metal material and a second standard polarization curve of the second metal material from a polarization curve library to determine the standard galvanic corrosion current density of the lap joint structure of the galvanic anode metal material and the dissimilar metal to be evaluated; determining a target corrosion rate of the galvanic couple anode metal material; and based on the target corrosion rate, determining a galvanic corrosion risk assessment result of the to-be-assessed dissimilar metal lap joint structure. The technical problem of low efficiency of a galvanic corrosion risk assessment mode in related technologies is solved, and the technical effect of improving the efficiency of galvanic corrosion risk assessment is achieved.

The invention relates to the field of corrosion protection of metal materials in engineering application, provides a composite gasket, and a method and device for inhibiting galvanic corrosion formed by connection of different metals, and aims to solve the problem that galvanic corrosion formed by connection of a cathode and an anode cannot be cut off only through an insulating material in the prior art. Comprising the following steps: inlaying anode metal on the surface of an insulating spacer in contact with an environmental medium to obtain a composite spacer; a composite gasket is connected between a galvanic couple cathode and a galvanic couple anode which are located in an environmental medium, anode metal embedded in the composite gasket and the galvanic couple anode are connected with an external power source through wires to form a cathode protection current circuit, the composite gasket is connected to the positive electrode of the external power source, and the composite gasket is connected to the negative electrode of the external power source. The galvanic couple anode is connected to the cathode of the external power supply; and adjusting the cathode protection current of the cathode protection current circuit through an external power supply, and monitoring the anode current of the galvanic couple anode at the same time until the measured anode current is reduced to a preset condition.

The present application relates to a galvanic anode (100) for the protection of a steel reinforcement (200) of reinforced concrete structures. The galvanic anode (100) comprises: a first metal layer (1), a second metal layer (2) electrically connected to the first metal layer (1), an electrolyte (4) surrounding the first metal layer (1) and the second metal layer (2); the electrolyte (4) having a pH between 5.5 and 7.5 and the electrolyte (4) comprising an ion-conducting gel; a casing (6) contains the electrolyte (4); said casing being made of a material that allows for an ion exchange between the electrolyte (4) and the concrete suitable for surrounding the anode (100).

The application discloses a kind of based on galvanic critical dimension of multi-metal system galvanic effect evaluation method and device, and it is related to electrochemical corrosion evaluation technical field.Multi-metal system galvanic effect evaluation method includes steps: obtaining the polarization curve and self-corrosion potential of each metal in multi-metal system, determine galvanic anode and galvanic cathode on each lap surface;Calculate the galvanic critical dimension of any two groups of metals in multi-metal system;Compare the size of actual interface distance and combined critical distance, determine the galvanic corrosion form of multi-metal system;If the galvanic of two lap surfaces has no mutual influence, then carry out independent galvanic analysis, if the galvanic of two lap surfaces exists potential competition, then carry out coupling analysis to the galvanic of two lap surfaces.The application fully considers the complex potential coupling, interface interference and mutual influence effect between multi-metals, and improves the accuracy, applicability and scientificity of multi-metal lap joint structure galvanic corrosion evaluation.

The present invention discloses a laboratory box-type resistance furnace energy efficiency test device, including: a box-type resistance furnace temperature test device and an energy consumption test device; wherein the box-type resistance furnace temperature test device includes a box-type resistance furnace temperature test bracket, a temperature test thermocouple anode wire, a temperature test thermocouple cathode wire, a thermocouple protective film, a compensation wire, and a temperature data acquisition and recording device; the energy efficiency test device includes an energy consumption test device, a control module, and a connecting wire. Based on the above device, the present invention also proposes a laboratory box-type resistance furnace energy efficiency test method, including a box-type resistance furnace empty furnace heating energy efficiency test method and a box-type resistance furnace empty furnace constant temperature energy efficiency test method. The present invention indirectly promotes the technical upgrade and energy efficiency control of the equipment by identifying the energy consumption of the equipment, ultimately achieving the purpose of energy saving and consumption reduction, promoting the development and progress of industry technology, and also contributing to the creation of a green laboratory.