Electrochemical cell for the study of corrosion by polarization methods in non-conducting solutions

• US 3,337,440 A
• Filed: 01/21/1964
• Issued: 08/22/1967
• Est. Priority Date: 01/21/1964
• Status: Expired due to Term

• Current Assignee: Leonard J. Nestor
• Original Assignee: Leonard J. Nestor
• Inventors: Nestor, Leonard J.
• Application Number:
  US04/339,310
• Time in Patent Office: 1,309 Days
• US Class Current: 204/404
• CPC Class Codes: G01N 17/02 Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement

Claims

3. ELECTROCHEMICAL APPARATUS FOR STUDYING CORROSION OF A SPECIMEN ELECTRODE IN AN ELECTRICALLY NON-CONDUCTIVE FLUID, SAID APPARATUS COMPRISING:

(A) A RECEPTACLE IN WHICH THE FLUID IS DEPOSITED;

(B) A CORROSIVE ELECTROLYTIC INJECTION DEVICE HAVING A TUBULAR EXTREMITY WHICH EXTENDS INTO THE INTERIOR OF THE RECEPTACLE;

(C) MEANS FOR SUSPENDING THE SPECIMEN ELECTRODE IN THE FLUID ABOVE THE TUBULAR EXTREMITY OF THE INJECTION DEVICE;

(D) MEANS FOR DIRECTING A PREDETERMINDED FLOW OF A CORROSIVE ELECTROLYTE THROUGH THE TUBULAR EXTREMITY OF THE INJECTION DEVICE AGAINST THE PERIPHERAL SURFACE OF THE SPECIMEN ELECTRODE;

(E) A CONTROL ELECTRODE IMMERSED IN THE CORROSIVE ELECTROLYTE;

(F) A REFERENCE ELECTRODE IMMERSED IN A SECOND ELECTROLYTE;

(G) MEANS FOR ESTABLISHING ELECTROLYTIC CONTACT BETWEEN THE REFERENCE ELECTRODE AND THE SPECIMEN ELECTRODE;

AND (H) A POTENTIOSTAT COUPLED TO THE SPECIMEN, CONTROL AND REFERENCE ELECTRODES.