Determination device for metallic hydrogen diffusion current

Abstract

The invention discloses a determination device for metallic hydrogen diffusion current. The determination device comprises a cathode chamber, an anode chamber and a CS double constant potential workstation, wherein the cathode chamber and the anode chamber are communicated with each other; a hole provided with a drain valve is formed in the lower part of one side of each of the cathode chamber and the anode chamber; a beak bent-tube stretching from the anode chamber to a communicating channel is mounted at the top opening of the anode chamber through a tightened rubber plug, a saturated calomel reference electrode is mounted in the beak bent-tube through a rubber plug, and an auxiliary electrode II connected with a conducting wire is also arranged in the anode chamber and positioned near to one side of the beak bent-tube; an auxiliary electrode I connected with the conducting wire is also arranged in the cathode chamber; a sample connected with the conducting wire is clamped between the connecting end faces of the communicating channel through sealed rubber rings; the auxiliary electrode I, the sample, the saturated calomel reference electrode and the auxiliary electrode II are connected to related interfaces in the CS double constant potential workstation through the conducting wires. The determination device has the advantages that the good accuracy is realized, the operation is convenient, the measuring results are stable and reliable and the usage and maintenance cost is low.

Description

technical field [0001] The invention belongs to the technical field of detection, relates to a measuring device for hydrogen permeation of metal materials, and more particularly relates to a measuring device for metal hydrogen diffusion current using electrochemical technology. Background technique [0002] There are many methods to measure hydrogen permeation of metal materials, such as pressure measurement method, high pressure vacuum method, etc., but the equipment required by these methods is complicated and the measurement accuracy is difficult to guarantee. At present, there is no finalized detection instrument and equipment for the electrochemical method to measure the hydrogen diffusion behavior of metal materials. In scientific research or production, self-designed and built detection devices are generally used according to needs. Most of these self-designed and built detection devices are complex in design, cumbersome in steps, and poor in precision, resulting in i...

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Problems solved by technology

Most of these self-designed and built detection devices are complex in design, cumbersome in steps, and poor in precision, resulting in inaccurate measurement results, and most of them are structurally constructed from top to bottom.

As a result, when electrochemically nickel-plating, the H+ in the solution absorbs electrons to form hydrogen bubbles in the lower part of the sample, resulting in a decrease in the contact area between the nickel-plating solution and the sample, uneven nickel plating, and even unsuccessful nickel plating, resulting in Inaccurate or even failed measurements of metal hydrogen diffusion current

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