Corrosion of a large number of metal samples that have been exposed to controlled environment is accurately and rapidly measured. Wire samples of the metal are embedded in clear plastic and sectioned for microexamination. Unexposed wire can be included in the matrix as a reference

Maskell, C. E.

English

NASA Technical Reports Server

April 1966
	 Brief 66-10140 
NASA TECH BRIEF 
NASA Tech Briefs are issued to summarize specific innovations derived from the U. S. space 
program and to encourage their commercial application. Copies are available to the public from 
the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
Corrosion of Metal Samples Rapidly Measured 
Corrosion Penetration	 Corrosion Penetration 
(0.00081
	
	 (0.0012") 
tier 
Exposure 
re 
surer
,eAfter 
I	 Exoo 
Clear Plastic Matrix
50X MAGNIFICATION 
The problem: 
To devise a method for accurately and rapidly meas-
uring the extent of corrosion of a large number of 
metal samples that have been exposed to controlled 
environments. 
The solution: 
A method of microexamination of wire samples of 
the metal before and after exposure to a controlled 
corrosive environment.
How it's done: 
Cross sections of the wire samples are microex-
amined prior to exposure to the corrosive environ-
ment, in order to establish a reference. After exposure, 
the wires are embedded in a quick-curing clear plastic. 
The plastic matrix (with the embedded wires) is then 
cut into suitable lengths, leaving the ends of the wires 
flush with the plastic surface. Micromeasurements 
on the ends of the wires indicate the amount of cor-
rosion penetration that has occurred.
(continued overleaf) 
This document was prepared under the sponsorship of the National 	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States 	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States 	 will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19660000139 2020-03-11T17:30:07+00:00Z
Note:	 Patent status: 
Inquiries concerning this innovation may be di-
	 No patent action is contemplated by NASA, 
rected to:	 Source: C. E. Maskell 
Technology Utilization Officer 	 of the Aerojet-General Corporation 
AEC-NASA Space Nuclear Propulsion 	 under contract to 
Office	 AEC-NASA Space Nuclear Propulsion Office 
U.S. Atomic Energy Commission 	 (NU-0041)
Washington, D.C., 20545 
Reference: B66-10140 
Brief 66-10140	 Category 03


Corrosion of metal samples rapidly measured

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