Device capable of testing stress-electrochemical corrosion

Abstract

The invention relates to a device capable of testing stress-electrochemical corrosion in the presence of anaerobic bacteria. The device comprises an electrochemical workstation, a stress corrosion stretcher, a constant-temperature water bath and a self-control stretching box, wherein the self-control stretching box adopts a cylindrical double-chamber structure; a medium solution flows in the outer chamber of the self-control stretching box; a test solution is contained in the inner chamber of the self-control stretching box; the top end of the outer chamber is sealed; a bracket is arranged on the wall of the inner chamber; the inner chamber is lower than the outer chamber; a polarity of holes are drilled in a box cover; the gap between the box cover and a box body is sealed with a sealing film; the self-control stretching box is sleeved by a layer of cylindrical heat insulation cover; rubber bands are arranged at two ends of the heat insulation cover; two medium solutions can be adopted in the constant-temperature water bath to heat or cool the test solution. The device can prevent the solutions from spilling out of the self-control stretching box, provides a constant-temperature closed stress corrosion environment for a stretching sample and realizes synchronous testing of various testing methods.

Description

technical field [0001] The invention relates to a corrosion test device, in particular to a stress-electrochemical corrosion test device capable of simultaneously performing stress corrosion and electrochemical corrosion tests in the presence of anaerobic bacteria. Background technique [0002] At present, the known stress corrosion testing device consists of a tensile box and a tensile machine. Seal the test piece on the stretching box, put the test solution in the box and cover the box, and fix the whole stretching box on the stress corrosion tensile machine for testing. However, the box body and the box cover of this stretching box are easy to separate, and the solution often overflows on the stress corrosion stretching machine, causing the drive shaft of the stretching machine to rust. Moreover, the current stress corrosion test device can only be carried out at room temperature, and anaerobic bacteria are suitable for growing in a constant temperature anaerobic environ...

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Problems solved by technology

[0003] In order to overcome the shortcomings that the existing stress corrosion test is limited to room temperature and the solution is easy to overflow, the present invention provides a stress-electrochemical corrosion test device, which can not only carry out conventional stress corrosion tests, but also provide a constant temperature environment for anaerobic testing. Device for Stress-Electrochemical Corrosion Simultaneous Testing in the Existence of Aerobic Bacteria

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