Certain surface-active media can considerably
influence the flow and fracture properties of the .solids they
wet. The effects of various lubricating media on the
sliding friction behaviour of diamond on soda-lime glass
were studied in the present research. An experimental
apparatus was constructed to slide a hemispherical diamond
linearly and at constant speed across the surface of a
Corning type 2947 soda-lime glass microslide and to measure
the resultant friction force. Tests were conducted in a
variety of liquid and gaseous media at sliding speeds
ranging from 0.001 cm/sec to 0.4 cm/sec. As a base for
comparison initial tests were conducted in a high vacuum — 8
at 4 x 10 ⁻⁸. The results showed that all the media enhanced material displacement from that observed in high vacuum. In addition, the friction force was observed to rise with displaced material. A simple theory was used to predict with reasonable agreement the results obtained in in vacuum and air only. The greatest increase in displaced material was observed in heptyl alcohol. Scanning electron micrographs of the friction tracks suggest that heptyl; alcohol softened the surface of the glass. This is in agreement with previous work. / Applied Science, Faculty of / Mechanical Engineering, Department of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/20541 |
| Date | January 1977 |
| Creators | Nelson, Bradford Charles |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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