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Metal material galvanic couple corrosion test fixture apparatus

A technology of galvanic corrosion and metal materials, applied in the field of experimental devices and fixtures, can solve problems such as threats to the overall reliability of structural facilities and potential safety hazards

Inactive Publication Date: 2013-08-07
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Galvanic corrosion, a potentially destructive factor, threatens the overall reliability of many structural facilities in real life and is one of the biggest safety hazards

Method used

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  • Metal material galvanic couple corrosion test fixture apparatus
  • Metal material galvanic couple corrosion test fixture apparatus
  • Metal material galvanic couple corrosion test fixture apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The fixture for the galvanic corrosion test of the metal material and the method of using the fixture for the galvanic corrosion test of the metal material will be further described in detail below in conjunction with the structural drawings.

[0032] figure 1 Schematic diagram of the work of the fixture device for the galvanic corrosion test of metallic materials. First, cut the length of insulating block 2 3 to the distance between the two samples required by the test, and place insulating block 2 3 in the middle support groove of main clamp body 8 . The two test samples 1 are respectively inserted into the groove of the main clamp body 8 where the insulating block is placed through the two hollow through holes on the bottom surface, and are in smooth contact with the two ends of the insulating block 2 and 3 . Place insulating block 1 2 and insulating block 3 4 on sample 1 and horizontal pressing bolt 5 according to the direction in which the end in contact with the ...

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Abstract

The invention relates to a metal material galvanic couple corrosion test fixture, and belongs to the technical field of experiment apparatuses and methods. The fixture comprises a main fixture body (8) and three insulating blocks such as an insulating block 1 (2), an insulating block 2 (3) and an insulating block 3 (4), the main fixture body (8) tightly presses the three insulating blocks to form the galvanic couple corrosion test fixture, the main fixture body (8) is provided with a rectangular concave groove, the three insulating blocks are aligned in a straight row manner, and placed into the rectangular concave groove, the bottom surface of the rectangular concave groove for placing the insulating block is provided with two hollow through holes for passing-through of two test specimens, shapes and sizes of cross sections of the three insulating blocks and a shape and a size of a cross section of the rectangular concave groove are the same, and a test specimen is clamped among the three insulating blocks. The present invention provides a fixture capable of effectively reducing influence of external factors on a metal material galvanic couple corrosion test, wherein advantages of high reliability, simple operation, and significant test accuracy improvement are provided.

Description

technical field [0001] The invention relates to a fixture, in particular to a fixture for a galvanic corrosion test of metal materials, and belongs to the technical field of experimental devices and methods. Background technique [0002] Galvanic corrosion is due to the electrical contact of metals with different electrochemical properties in the electrolyte solution. Due to the different corrosion potentials of metals with different electrochemical properties, the corrosion cathode and anode are composed of different corrosion potentials. There is a current flow between the cathode and anode, which increases the dissolution rate of metals with lower potentials, while the dissolution rate of metals with higher potentials decreases. . In addition to accelerating the corrosion rate of anode components, galvanic corrosion can also induce more dangerous corrosion damage such as pitting corrosion, crevice corrosion and stress corrosion. Galvanic corrosion, a potentially destruc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
Inventor 邢春雷杨庆生郭福
Owner BEIJING UNIV OF TECH
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