When you’re working with thermal sprayed coatings, one of the most critical quality checks is measuring porosity—those tiny voids that can affect how well a coating performs. ASTM E2109-01 provides standardized methods to determine the area percentage porosity in these coatings, giving you reliable, repeatable results whether you're doing manual comparisons or using automated image analysis.
Due to copyright and intellectual property laws, legitimate, fully detailed copies of the ASTM E2109-01 PDF are not legally available for free download on the public internet.
: In coatings or cast parts, excessive porosity can indicate manufacturing defects. The Methodology
The sectioned sample is encapsulated in a mounting resin (such as epoxy). Vacuum impregnation is highly recommended during this step. The liquid epoxy penetrates open pores, stabilizing them and preventing the pore edges from collapsing during subsequent grinding steps. 3. Grinding and Polishing astm e2109-01 pdf
Metallurgists, Aerospace QC Engineers, Automotive Coating Labs
The ICS Code for this standard is , and the standard contains 8 pages.
: This method is ideal for quick, low-cost laboratory checks that do not require specialized computer software. When you’re working with thermal sprayed coatings, one
: The complete standard is available for purchase and download directly from the ASTM International official website .
Select multiple representative fields of view across the coating thickness. Avoid areas near the extreme edges of the specimen where preparation artifacts might exist.
In Thermal Barrier Coatings (TBCs) used in aerospace, controlled porosity is actually desirable to reduce thermal conductivity. : In coatings or cast parts, excessive porosity
It is easy to confuse E2109-01 with other stain or abrasion tests. Here is a quick comparison:
Always include the "-01" suffix. If you used a later reaffirmation (e.g., E2109-01(2019)), cite that version exactly. Do not mix edition years.
The ASTM E2109-01 standard is a critical document for materials scientists, metallurgists, and quality control engineers [1]. This standard provides test methods to determine the area fraction of various microstructural features using both manual and automated image analysis systems [1]. Finding an official is often the first step for laboratories looking to standardize their quantification processes for phases, inclusions, or porosity in materials. What is ASTM E2109-01?
Accurate measurement starts with perfect sample preparation.Improper cutting, grinding, or polishing can distort the results.