ASTM E2109-01(2014)
Standard Test Methods for Determining Area Percentage Porosity in Thermal Sprayed Coatings

Standard No.

ASTM E2109-01(2014)

Release Date

2001

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E2109-01(2021)

Latest

ASTM E2109-01(2021)

Scope

4.1 TSCs are susceptible to the formation of porosity due to a lack of fusion between sprayed particles or the expansion of gases generated during the spraying process. The determination of area percent porosity is important in order to monitor the effect of variable spray parameters and the suitability of a coating for its intended purpose. Depending on application, some or none of this porosity may be tolerable.

4.2 These test methods cover the determination of the area percentage porosity of TSCs. Method A is a manual, direct comparison method utilizing the seven standard images in Figs. 1-7 which depict typical distributions of porosity in TSCs. Method B is an automated technique requiring the use of a computerized image analyzer.

FIG. 1 — 8199;0.58201;% Porosity

FIG. 2 — 8199;1.08201;% Porosity

FIG. 3 — 8199;2.08201;% Porosity

FIG. 4 —8199; 5.08201;% Porosity

FIG. 5 —8199; 8.08201;% Porosity

FIG. 6 — 8199;10.08201;% Porosity

FIG. 7 — 8199;15.08201;% Porosity

4.3 These methods quantify area percent porosity only on the basis of light reflectivity from a metallographically polished cross section. See Guide E1920 for recommended metallographic preparation procedures.

4.4 The person using these test methods must be familiar with the visual features of TSCs and be able to determine differences between inherent porosity and oxides. The individual must be aware of the possible types of artifacts that may be created during sectioning and specimen preparation, for ......

1.1 Th......

ASTM E2109-01(2014) Referenced Document

• ASTM E1245 Standard Practice for Determining the Inclusion or Second-Phase Constituent Content of Metals by Automatic Image Analysis
• ASTM E1920 Standard Guide for Metallographic Preparation of Thermal Sprayed Coatings
• ASTM E3 Standard Practice for Preparation of Metallographic Specimens
• ASTM E562 Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count
• ASTM E7 Standard Terminology Relating to Metallography

ASTM E2109-01(2014) history

• 2021 ASTM E2109-01(2021) Standard Test Methods for Determining Area Percentage Porosity in Thermal Sprayed Coatings
• 2001 ASTM E2109-01(2014) Standard Test Methods for Determining Area Percentage Porosity in Thermal Sprayed Coatings
• 2007 ASTM E2109-01(2007) Test Methods for Determining Area Percentage Porosity in Thermal Sprayed Coatings
• 2001 ASTM E2109-01 Test Methods for Determining Area Percentage Porosity in Thermal Sprayed Coatings
• 2001 ASTM E2109-00 Test Methods for Determining Area Percentage Porosity in Thermal Sprayed Coatings