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Rigaku OpenLab: July 7-11, 2014, Cambodia
Micro analysis of inclusions in copper wire
Wire failures due to inclusions in the body of the wires are examined using the ZSX Primus Mapping/Micro Analysis feature. The CCD camera within the XRF unit allows for images to be taken thereby letting the user determine where the analysis should take place on the sample via a point and click function.
A number of wires with imbedded inclusions which caused faults in the production of one long string of wire were submitted for analysis. The wires were placed in a sample cup and each was positioned to offer the best 'view' of the problem area for analysis. Semi-quantitative analysis was performed on each wire to determine the inclusion or fault composition located at the tip of the wires (Figures 1-3). No sample preparation was done other than an alcohol wipe and positioning the samples on a blank supporting substructure (a plastic pressing cap in this case) to prevent back scatter from the analysis chamber.
Two spot analysis were taken on each sample - one on the shaft and one on the wire tip. See Figures 1-3. Semi-quantitative analysis was then performed using the Rigaku SQX analysis routine.
Some comparison scan examples are shown in Figures 4-8, the results are shown in Figures 4-5
These results show a definite difference in the material being analyzed. From these results it can be determined where in the manufacturing process the inclusions originated.
Rigaku ZSX Primus delivers rapid quantitative determination of major and minor atomic elements, from beryllium (Be) through uranium (U), in a wide variety of sample types — with minimal standards. Read more...