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Marked influence of crystal structure on the friction and wear characteristics of cobalt and cobalt-base alloys in vacuum to 10-9 millimeter of mercury. i- polycrystalline and single crystal cobalt
| Content Provider | Semantic Scholar |
|---|---|
| Author | Buckley, Donald H. Johnson, Robert Lawrence |
| Copyright Year | 1964 |
| Abstract | Abstract : Friction and wear characteristics were determined for polycrystalline Cobalt sliding on various materials (polycrystalline cobalt, 440-C, 52l00, and aluminum oxide) in vacuum (l0-9 mm Hg). The influence of crystal transformation on the friction and wear characteristics of cobalt were determined by varying sliding velocity and ambient temperature. The effect of orientation of single-crystal cobalt sliding on polycrystalline cobalt was also determined. Friction and wear experiments were conducted at sliding velocities to 2000 feet per minute and ambient temperatures to 850 F. Both polycrystalline and oriented single crystals of cobalt were the rider specimens (3/16-in. -rad. hemisphere) sliding on flat 2 1/2inch-diameter disks of various materials. Factors studied were the influences of crystal transformation and single crystal orientation on the friction and wear characteristics of cobalt. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19650003010.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
