EEC Equipamento para o Estudo de Corrosão

CORROSION STUDY UNIT - EEC

Unit: EEC. Corrosion Study Unit

SISTEMAS INOVADORES

The Corrosion Study Unit, "EEC", allows the corrosion simultaneous study up to eight corrosion cells. This unit allows to study several conditions that influence in the corrosion processes.

Ver descrição geral

Descrição Geral

The Corrosion Study Unit, "EEC", allows the corrosion simultaneous study up to eight corrosion cells. This unit allows to study several conditions that influence in the corrosion processes.

Each sample for the test is put in such away that unwanted secondary effects are eliminated.

The cells included a cover to adapt two test sheets, a reference electrode and a gas diffuser tube.

A salt bridge is included for the study and production of electrochemical cells.

It is possible connect the different samples to a power supply to study the principle of sacrificial anodes.

The ambient air is introduced into the electrolyte solution with an air pump. An air flowmeter is situated at the pump outlet to measure the air flow. There are several air control valves to adjust the air flow rate for each corrosion cell. It is also possible to feed other gases into the electrolyte solution using a gas flowmeter and several gas control valves.

The service panel includes a miliammeter and a milivoltmeter to measure the intensity and the voltage between the electrodes, a voltmeter/ammeter selector, a cell selector and several connecting terminals in the test sheets.

The unit includes a pH-meter to study and compare the influence of the electrolyte solution on the corrosion processes.

The corrosion rate of a certain sample can be measured qualitatively by "visual observation", or quantitatively though "immersion test by initial and final weighing".

EXERCÍCIOS E PRÁTICAS GUIADAS

EXERCÍCIOS PRÁTICOS GUIADOS INCLUÍDOS NO MANUAL

  1. Galvanic potentials.
  2. Study of galvanic couples.
  3. Passivation of iron.
  4. Influence of pH.
  5. Aluminum anodizing process.
  6. Cathodic protection.
  7. Galvanic corrosion + oxidation.
  8. Daniell cell construction to obtain standard potentials.

EXERCÍCIOS MAIS PRÁTICOS A SEREM FEITOS COM A UNIDADE

  1. Influence of the O2 concentration in the corrosion.
  2. Simultaneous study of corrosion in several cells.
  3. Electrolytic corrosion.
  4. Chemical inhibition.
  5. Prevention of scaling.
  6. Effect of internal stress.
  7. Water treatment studies:
  • Calcium carbonate stabilization.
  • Oxidation of iron and manganese in ground waters.
  • Water softening by chemical precipitation.
  • Desinfection of waste water with chlorine solutions.

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