Metal Finishing Guide Book

2011-2012 Surface Finishing Guidebook

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4. Porosity: nitric acid vapors or immersion, electrolytic, gas. 5. Solderability. 6. Thickness: X-ray, beta backscatter, microsection. Continuous thickness testing equipment is available, which can be used to con- trol the thickness of the deposits as well as to monitor them. Experience has show that the seemingly high cost of such a capability is soon recouped through con- servation of precious metals. 621

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