TEMPERATURE-CONTROLLED IN-VITRO POTENTIODYNAMIC CORROSION CELL

Abstract

This invention is a temperature-controlled in-vitro potentiodynamic corrosion cell developed for use in academic research and R&D units that require in-vitro potentiodynamic testing to determine the corrosion behavior of materials. It relates to temperature-controlled in-vitro potentiodynamic corrosion cells used in potentiodynamic corrosion tests with and without temperature control.

Description

1 TARIFF TEMPERATURE-CONTROLLED IN-VITRO POTENTIODYNAMIC CORROSION cell Technical Area This invention has potentialidynamic applications in the fields of engineering and bioengineering. Temperature-controlled in- used in all areas where polarization tests are performed. It relates to in vitro potentiodynamic corrosion cells. State of the Art Potential dynamic corrosion testing measures the corrosion resistance of metals or alloys. It is a technique used to evaluate an electrical potential. This method involves measuring an electrical potential. It simulates a process that slowly oxidizes the metal by applying (voltage). This by controlling and altering the potential, the speed of the corrosion process and 15 The dynamics are being determined. In the known state of the art; a method used in potentiodynamic corrosion testing. A corrosion cell typically consists of a working electrode, a reference electrode, and a counter electrode. It is designed according to three electrode techniques, including: Working electrode 20 The working electrode is the material whose corrosion resistance is to be measured. Reference The reference electrode provides a stable potential, thus precise control of the potential on the working electrode It provides. Commonly used reference electrodes are the standard hydrogen electrode. (SHE) and its potential is defined as 0 Volts. In the relevant tests, Ag / AgCl 25 Electrodes are used. The counter electrode is used in the study. It carries the current applied to the electrode, and is usually made of an inert metal. It consists of a material such as platinum or graphite. It has three electrodes. The components are typically placed in an electrolyte. The electrolyte is electrically charged. It is a conductive liquid, such as 3.5% NaCl seawater, and usually contains 30% of the metal. It is selected to mimic its natural environment. During potentiodynamic tests, The potential applied to the working electrode is slowly changed, and this change During this process, the current is recorded. This data is used to create a volt-ampere curve. 2 In technology, potentiodynamic corrosion is also used in conducting the relevant test. These cells are used. These cells do not have temperature control. It usually has a horizontal design, with the samples to be tested placed vertically. It binds. This creates limitations in sample placement. Sample Gas bubbles emanating from the surface are found in the parts of the cell that come into contact with the sample. 5 It accumulates and negatively affects the test. In some designs used in the known state of the art, the sample is placed horizontally. They connect. In such cells, the gas bubbles that are released adhere to the surface of the reference electrode. It aggregates and gives incorrect results. In situations requiring temperature control, however, 10 The cells are immersed in a water bath. In such working conditions, the test cell... Eye contact is lost and control is lost. Usually the working electrode is embedded in bakelite. This ensures that sections not being tested are protected. This method is used in experiments. This results in a waste of time during the process. As mentioned above, there are several applications in the field of technology, and one of them is... The team has disadvantages. We need to eliminate the disadvantages of the current technique. systems that can perform potentiodynamic corrosion testing under more controlled conditions It is needed. This invention is applicable in all areas where potentiodynamic polarization tests are performed. This relates to the temperature-controlled in-vitro potentiodynamic corrosion cell used. Description of the Invention This statement explains that the invention is intended solely for the purpose of better understanding the subject and 25 It is explained in a way that will not create any limiting effects. The present invention eliminates the disadvantages mentioned above. potentiodynamic corrosion testing will require temperature control or temperature In cases where control is not used, work on the reference electrode 30 reduces the accumulation of gases escaping from the electrode, and facilitates sample binding. a temperature that will facilitate and allow testing to be done quickly It relates to a controlled in-vitro potentiodynamic corrosion cell. 3 The primary aim of the invention is to eliminate the disadvantages mentioned above and To create in-vitro temperature conditions during the experiment and potentiodynamics The corrosion chamber makes the test easier and more reliable. Another purpose of the invention is to perform potentiodynamic corrosion testing with a corrosion cell. temperature control will be required or where temperature control is not used in these cases the output from the working electrode will be on the reference electrode to reduce gas accumulation, facilitate sample binding and speed This is how you can conduct tests. Another objective of the invention is to quickly activate the working electrode. It is changeable. Another purpose of the invention is to allow the same large samples from a corrosion testing area. It is the repetition of the same test on different parts of the surfaces. 15 The invention, as preferred, involves temperature control of potentiodynamic corrosion testing. reference in situations where it will be required or temperature control is not used. to reduce the accumulation of gases escaping from the working electrode on the electrode, a 20 that will facilitate sample binding and allow testing to be done quickly It is a corrosion cell. The invention, in its preferred form, is potentiodynamic. It is a corrosion cell that performs corrosion tests quickly under controlled conditions. The invention, more preferably described, is a temperature-controlled in-vitro potentiodynamic device. It is a corrosion cell. Figure 1 shows; a (top view), b (top profile view), c (front view), d (side profile), e (side view) and f (rear view) are given, temperature-controlled in-vitro 30 This is a technical drawing of a potentiodynamic corrosion cell from different angles. Top cover. (1) consists of three holes and fits perfectly into the transparent liquid reservoir. 3 The different orifices functionally contain one thermocouple, one reference electrode, and It is used for one counter electrode, and the number of holes can be adjusted according to need. 4 It can be increased. Transparent liquid reservoir (2), by the effect of corrosion test liquid It is durable and transparent. Its transparency is due to the fact that all the contents inside are visible. The parts and details are visible. Transparent, like flexographic glass or glass. It can be made of various components, and plexiglass is preferably used. Resistance heater (3) has the property of heating by showing electrical resistance. Top inclined 5 Part (4) is a circular part that provides contact between the working electrode and the corrosion fluid. It has a cross-sectional hole. Around the hole, there is at least one section to prevent liquid from leaking. It has a sealing element. The given slope is within the angle range of 10-80 degrees. It should be. Work between the lower inclined part and the upper inclined part. There are sections for securing the electrode, for the fixing elements. Transparent liquid 10 It must be sealed with its reservoir and there should be no liquid leakage. The lower sloping part (5), 10-80 It is compatible with the upper inclined part at a slope with a degree angle. To the working electrode. one end that makes contact, the other end having electrical conductivity that can be connected to the device. A channel is available for the material. The working electrode is connected to this channel. It is possible. 15 The temperature-controlled in-vitro potentiodynamic corrosion cell shown in Figure 2. It is the working mechanism and the proportional-integral-derivative controller (PID) connection. PID The controller (1) transmits the temperature information it receives from the liquid via the thermocouple to the resistance heater, It ensures that the corrosion cell is heated to the desired temperature. Thermocouple 20 (Thermocouple) (2) can measure temperature in the range of 0-100°C. Resistor The heater connection (3) provides electrical conduction to the resistance heater. Figure 3 shows a (front view), b (side view), c (top view) and d (isometric view). Technical drawing of the potentiodynamic corrosion cell (appearance) given 25 The specifications are given in Figures 1 and 2. Temperature-controlled in-vitro potentiodynamic corrosion possessing all these characteristics. The cell and working electrodes are tested quickly and reliably under in-vitro conditions. will be done. 30

Claims

REQUESTS 1. Temperature-controlled in-vitro potentiodynamic corrosion cell in-vitro potentiodynamic testing of the corrosion behavior of materials for use in academic research and R&D units It is a cell that has been developed, and its characteristic is that the tests performed have been stable for 5 years. It must be feasible.

2. A method that complies with Claim 1, characterized by the fact that it does not require temperature control. Its usability in potentiodynamic tests.

3. A method that complies with Claim 2, characterized by the fact that it does not involve any testing of the samples. It is the determination of potentiodynamic properties without the molding process.

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