ASTM F22-65(1998)

Standard Test Method for Hydrophobic Surface Films by the Water-Break Test

SCOPE
1.1 This test method covers the detection of the presence of hydrophobic (nonwetting) films on surfaces and the presence of hydrophobic organic materials in processing ambients. When properly conducted, the test will enable detection of molecular layers of hydrophobic organic contaminants. On very rough or porous surfaces the sensitivity of the test may be significantly decreased.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 31-Dec-1991
• ICS: 25.220.20 - Surface treatment
• Technical Committee: E21 - Space Simulation and Applications of Space Technology
• Drafting Committee: E21.05 - Contamination

Relations

• Replaced By: ASTM F22-02 - Standard Test Method for Hydrophobic Surface Films by the Water-Break Test
• Effective Date: 10-Oct-2002
• Referred By: ASTM F2661-07(2022) - Standard Test Method for Determining the Tribological Behavior and the Relative Lifetime of a Fluid Lubricant using the Spiral Orbit Tribometer
• Effective Date: 01-Jan-1992
• Referred By: ASTM D2201-23 - Standard Practice for Preparation of Zinc-Coated and Zinc-Alloy-Coated Steel Panels for Testing Paint and Related Coating Products
• Effective Date: 01-Jan-1992
• Referred By: ASTM D2625-20 - Standard Test Method for Endurance (Wear) Life and Load-Carrying Capacity of Solid Film Lubricants (Falex Pin and Vee Method)
• Effective Date: 01-Jan-1992
• Referred By: ASTM F21-20 - Standard Test Method for Hydrophobic Surface Films by the Atomizer Test
• Effective Date: 01-Jan-1992
• Referred By: ASTM D2510-22 - Standard Test Method for Adhesion of Solid Film Lubricants
• Effective Date: 01-Jan-1992
• Referred By: ASTM F2664-19e1 - Standard Guide for Assessing the Attachment of Cells to Biomaterial Surfaces by Physical Methods
• Effective Date: 01-Jan-1992
• Referred By: ASTM A380/A380M-17 - Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems
• Effective Date: 01-Jan-1992

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: F 22 – 65 (Reapproved 1998)
Standard Test Method for
Hydrophobic Surface Films by the Water-Break Test
This standard is issued under the fixed designation F 22; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope hydrophobic contaminants in processing ambients. For this
application, a surface free of hydrophobic films is exposed to
1.1 This test method covers the detection of the presence of
the ambient and subsequently tested.
hydrophobic (nonwetting) films on surfaces and the presence
of hydrophobic organic materials in processing ambients.
6. Interferences
When properly conducted, the test will enable detection of
6.1 Loss of sensitivity may result from either of the follow-
molecular layers of hydrophobic organic contaminants. On
ing factors:
very rough or porous surfaces the sensitivity of the test may be
6.1.1 The presence of hydrophilic substances on the surface
significantly decreased.
to be tested, in the test equipment, or in the test materials, or
1.2 The values stated in inch-pound units are to be regarded
6.1.2 An unusually rough or porous surface condition.
as the standard. The values given in parentheses are for
information only.
7. Apparatus
2. Referenced Documents 7.1 Overflow Container such as a glass beaker.
7.2 Low Power Microscope (53 to 503) and light source
2.1 ASTM Standards:
for observation of small piece parts.
D 351 Classification for Natural Muscovite Block Mica and
Thins Based on Visual Quality
8. Reagents and Materials
3. Terminology 8.1 Purity of Reagents—Reagent grade chemicals shall be
used in all tests. Unless otherwise indicated, it is intended that
3.1 Definitions:
all reagents shall conform to the specifications of the Commit-
3.1.1 hydrophilic—having a strong affinity for water, wet-
tee on Analytical Reagents of the American Chemical Society,
table.
where such specifications are available. Other grades may be
3.1.2 hydrophobic—having little affinity for water, nonwet-
used, provided it is first ascertained that the reagent is of
table.
sufficiently high purity to permit its use without lessening the
4. Summary of Test Method accuracy of the determination.
8.2 Purity of Water—Deionized or distilled water is pre-
4.1 The water-break test is performed by withdrawing the
ferred. Water of higher ionic content may render the test
surface to be tested, in a vertical position, from a container
destructive. The water used must be free of hydrophobic and
overflowing with water. The interpretation of the test is based
hydrophilic substances.
upon the pattern of wetting. In the absence of hydrophobic
films, the draining water layer will remain as a film over the
NOTE 1—The freedom of the water from hydrophobic and hydrophilic
surface. In areas where hydrophobic materials are present on contamination may be determined in accordance with Section 9.
the surface, the draining water layer will break up into a
8.3 Acetone.
discontinuous film within 1 min.
8.4 Mica Blanks, preferably 1 in. (25 mm) by 2 in. (50 mm)
by 0.015 in. (0.38 mm) or larger, having minimum ASTM
5. Significance and Use
Quality V6 as described in Classification D 351.
5.1 The water-break test as described in this test method is
8.5 Oleic or Stearic Acid—A 0.05 % solution in acetone.
nondestructive and may be used for control and evaluation of
processes for the removal of hydrophobic contaminants. The
9. Calibration and Standardization
test may also be used for the detection and control of
9.1 Freedom of the test equipment and materials from
This test method is under the jurisdiction of ASTM Committee E-21 on Space Reagent Chemicals, American Chemical Society Specificati
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