ASTM B487 PDF

May 14 2020
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Image analysis software for measuring layer thickness and porosity on inconel coating samples as per ASTM B ASTM B Test Method for Measurement of Metal and Oxide Coating Thickness by. Microscopical Examination of Cross Section. This test method covers. The results stated above relate only to the specific items tested. Information and statements in this report are derived from material, information.

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For nickel and copper coatings on aluminum and its alloys.

A number in parentheses indicates the year of last reapproval. Summary of Test Method 3.

The latter has a lower precision. For silver and gold on copper and nickel alloys and steel. Micrograph cross-section showing nickle and copper thickness. This may be minimized by totally immersing abrasive papers in a lubricant during grinding or by using a copious?

That is, for practical purposes, greater magni? Edge rounding b87 be caused by improper mounting, grinding, polishing, or etching.

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satm Originally published as B — For gold, lead, silver, nickel and copper coatings on steel, copper, and copper alloys. A2lA Official Scope and Certification. Removal of coating material during surface preparation for overplating can cause a low-thickness measurement.

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Micrograph cross-section showing varying thickness of nickel over copper. This theoretical limit is approached by good quality microscopes.

For determination of thickness of individual layers of multilayer coatings of nickel on steel and copper alloys; distinguishes each layer of nickel by identifying structures. Automobile wheel cap – copper, multilayer nickel and hard chromium plated. Preparation of Cross Sections ast. Dubpernell Microporosity Test on a copper, nickel, chromium plated automobile part. For additional guidance see Methods E 3. For nickel and copper on zinc-based alloys.

If abrasive particles do become embedded, they may be removed by applying a short, light hand polish with metal polish after grinding and before diamond? It is usually minimized by overplating the test specimen before mounting.

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Initial grinding should employ or grade abrasive to reveal the true specimen pro? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. For practical purposes better resolution cannot be obtained regardless of the quality of the optics or of the total magni? Automobile door handle – copper, multilayer nickel and hard chromium plated.

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Aluminum parts – testing the conductivity and composition Conductivity measurement using eddy current technique and also evaluation of aluminum alloy composition.

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Etches aluminum and its alloys. Micrograph of an automobile plated part with copper and nickel. If a stage micrometer is not certi?

Sometimes image sharpness can be improved by using monochromatic light. As calibration is operator n487, the eyepiece shall be calibrated by the person making the measurement. Poor quality lenses could preclude accurate measurements.

ASTM B – Coating Thickness by Cross Section / X-Section

This can be minimized by completing the measurement quickly and by measuring each interval twice, once from left to right and once from right to left. Measure thickness of aluminum oxide coating. Excessive etching produces a poorly de? Micrograph showing varying thickness of nickel and copper for electroplated part. E 3 Methods of Preparation of Asstm Specimens2 3.