Biological corrosion and wear test method and device capable of monitoring on line

Abstract

The invention discloses a biological corrosion and wear test method and device capable of monitoring on line. The method for carrying out a corrosion and wear test through the device comprises the following steps: uniformly pasting a conductive adhesive on a non-wear test surface of a metal sample and fixing a wire; vertically putting the test sample with the fixed wire into a cylindrical mold with the test surface facing downwards, and carrying out cold inlaying by using epoxy resin; using absolute ethyl alcohol to clean the inlayed sample, fixing the treated sample in a corrosion tank of a corrosion and wear test device, fixing a saturated calomel electrode and a platinum electrode in the corrosion tank, and connecting the electrodes with an electrochemical workstation through wires; carrying out a corrosion and wear test, and monitoring and recording electrochemical indexes such as a corrosion potential and a corrosion current and data such as a temperature and a friction coefficient on line; and after the test is finished, taking out the sample, and testing the abrasion crack morphology, corrosion products, an abrasion volume and the like after corrosion and wear. The method and the test device are small in size, adjustable in parameter, modularized in operation, low in cost, convenient to operate, high in stability and capable of achieving simultaneous detection of corrosion and wear parameters.

Description

technical field [0001] The invention relates to the technical field of block alloy corrosion and wear, in particular to a biological corrosion and wear test method and device capable of on-line monitoring. Background technique [0002] Due to the aging population, the extension of human life span and the increase in the number of traffic accidents, the demand for implants (hip and knee joints) is gradually increasing. Taking titanium alloy as an example, titanium alloy is due to its good mechanical properties, corrosion resistance Biocompatibility and biocompatibility have become a hot spot in the field of human implant materials, so they are widely used in the field of human implant materials, but titanium alloys have low hardness and poor wear resistance. In order to better apply to human implants In the field of materials, it is very necessary to evaluate its corrosion, dry wear and corrosion wear performance. The existing test devices mainly include reciprocating frictio...

AI Technical Summary

Problems solved by technology

[0002] Due to the aging population, the extension of human life span and the increase in the number of traffic accidents, the demand for implants (hip and knee joints) is gradually increasing. Taking titanium alloy as an example, titanium alloy is due to its good mechanical properties, corrosion resistance Biocompatibility and biocompatibility have become a hot spot in the field of human implant materials, so they are widely used in the field of human implant materials, but titanium alloys have low hardness and poor wear resistance. In order to better apply to human implants In the field of materials, it is very necessary to evaluate its corrosion, dry wear and corrosion wear performance. The existing test devices mainly include reciprocating friction and wear testing machine, ball-on-disk friction and wear testing machine, high-speed friction and wear testing machine, High temperature friction and wear testing machine, dynamic variable load friction and wear testing machine and controlled atmosphere friction and wear testing machine The machine is not suitable for testing the corrosion and wear conditions of the human body, and the device is large in size, difficult to assemble, and complicated to operate. The ball-on-disk friction and wear test machine can only test the dry wear performance of the sample, and cannot simultaneously detect corrosion and wear. To test the corrosion and wear performance of the sample, it needs to be carried out separately, and the test conditions of corrosion and wear cannot be controlled to be completely consistent, so the ball-on-disk friction and wear tester has a large error in the test results of the corrosion and wear test of the sample. For this reason, a method is provided. A biocorrosion wear test method and device capable of on-line monitoring are used to solve the above problems

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