Correction Method of Hydrogen Absorbing Performance Curve of Hydrogen Absorbing Materials

Abstract

The invention discloses a method for correcting a hydrogen absorption performance curve of a hydrogen absorption material. The method comprises the following steps of determining a left feature point and a right feature point; preliminarily marking off a first non-mutation region and a first mutation region; assigning a point sorting stepping value; setting a break point; marking off a second non-mutation region and a second mutation region; removing the first mutation region and the second mutation region; matching the first non-mutation region and the second non-mutation region; judging whether deviation at the position of the break point is greater than a deviation threshold value or not; moving the break point if the deviation at the position of the break point is greater than the deviation threshold value; re-confirming the second mutation region and the second non-mutation region by using a new break point; repeatedly performing matching and deviation judgment until the deviation is smaller than or equal to the deviation threshold value; and using a matched polynomial function as the corrected hydrogen absorption performance curve so as to finish correction of mutation. By the method, hydrogen absorption performance curve mutation caused by faults such as calibration deviation of a vacuum gauge can be corrected quickly and effectively, and the corrected curve can reflect the hydrogen absorption performance of the hydrogen absorption material basically.

Description

technical field [0001] The invention relates to a correction method for the hydrogen absorption capacity / hydrogen absorption rate curve of a hydrogen absorption material, in particular to a correction method for the sudden change in the hydrogen absorption performance curve of the hydrogen absorption material. Background technique [0002] Hydrogen-absorbing materials refer to functional materials that can effectively absorb hydrogen in vacuum equipment through physical and chemical actions. At present, the performance testing of hydrogen absorbing materials includes constant pressure method and so on. [0003] The constant pressure method uses a specific test container. The hydrogen gas for measurement is passed into the container in the vacuum equipment, absorbed by the hydrogen absorbing material, and then the pressure difference between the two ends of the container is measured to obtain the hydrogen absorbing capacity of the hydrogen absorbing material. The hydrogen ab...

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Problems solved by technology

However, recalibrating or replacing the vacuum gauge will expose the vacuum equipment to the air, and it will take a long time to bake to restore the vacuum performance of the vacuum equipment, and the long-term baking process may have a serious impact on the test sample. Cannot guarantee the consistency of the test

Moreover, for the measurement data that has been obtained when there is a fault such as a calibration deviation in the vacuum gauge, the mutation can only be eliminated by data correction. However, there is currently no effective data correction method to solve the sudden phenomenon of the hydrogen absorption performance curve.

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