AN EXPERIMENTAL APPARATUS FOR THE MEASUREMENT OF SESSILE DROP CONTACT ANGLES AT ELEVATED TEMPERATURES.

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Abstract:

An equipment suitable for the measurement of the contact angles of molten sessile drops on solid substrate was developed. Temperatures up to 2250F may be readily controlled to within plus or minus 10F for long periods of time. The environment of the specimens may be either vacuum to 0.00001 Torr or a specific gas. Photographic techniques were used to record the contact angles. Experimental results of molten Na2B4O7 on metal substrates showed a standard deviation of less than 2 deg. The uncertainly introduced by the angle measurement process was shown not to exceed 2 or -2 deg. Author

Author(s):
Clow, W. L. ; Liu, Tung
Author Organization(s):
AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OHIO
Descriptive Note:
Technical rept. Jan-Dec 66,
Pagination:
0021

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFML-TR-67-152
Task Number(s):
734302
Project Number(s):
AF-7343
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*DROPS, *TEST EQUIPMENT), (*LUBRICANTS, TEST EQUIPMENT), CERAMIC MATERIALS, SODIUM COMPOUNDS, BORATES, SURFACE PROPERTIES, LABORATORY EQUIPMENT
Field(s)/Group(s):
Lubricants and Hydraulic Fluids, Test Facilities, Equipment and Methods
Report Date:
1967 Jun 01