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Description of ASTM-B588 2010ASTM B588 - 88(2010)Standard Test Method for Measurement of Thickness of Transparent or Opaque Coatings by Double-Beam Interference Microscope TechniqueActive Standard ASTM B588 | Developed by Subcommittee: B08.10 Book of Standards Volume: 02.05 ASTM B588Significance and Use The thickness of a coating is often critical to its performance. For some coating-substrate combinations, the interference microscope method is a reliable method for measuring coating thickness. This test method is suitable for specification acceptance. 1. Scope 1.1 This test method covers the measurement of the thickness of transparent metal oxide and metallic coatings by utilizing a double-beam interference microscope. 1.2 The test method requires that the specimen surface or surfaces be sufficiently mirrorlike to form recognizable fringes. 1.3 This test method can be used nondestructively to measure 1 to 10 ? m thick transparent coatings, such as anodic coatings on aluminum. The test method is used destructively for 0.1 to 10 ? m thick opaque coatings by stripping a portion of the coating and measuring the step height between the coating and the exposed substrate. The stripping method can also be used to measure 0.2 to 10 ? m thick anodic coatings on aluminum. 1.4 The test method is usable as a reference method for the measurement of the thickness of the anodic film on aluminum or of metallic coatings when the technique includes complete stripping of a portion of the coating without attack of the substrate. For anodic films on aluminum, the thickness must be greater than 0.4 ? m; the uncertainty can be as great as 0.2 ? m. For metallic coatings, the thickness must be greater than 0.25 ? m; the uncertainty can be as great as 0.1 ? m. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ASTM Standards B504 Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method Keywords Aluminum coatings; Anodic coatings; Anodic coatings--Al/Al alloys); Chromium electroplating; Coating thickness; Destructive testing--coatings; Double-beam interference microscopy; Electrodeposited coatings; Metallic coatings; Microscopic examination--metallic/inorganic coatings; Opacity/opaque materials; Steel--electrodeposited coatings; Thickness--electrodeposited coatings; Transparent coatings; ICS Code ICS Number Code 17.040.20 (Properties of surfaces) DOI: 10.1520/B0588-88R10 ASTM International is a member of CrossRef. ASTM B588This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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