| タイトル | Adhesion and abrasion of surface materials in the Venusian aeolian environment |
| 著者（英） | Tucker, David; Hixon, Raymond; Marshall, John R.; Fogleman, Guy; Greeley, Ronald |
| 著者所属（英） | California Univ.|Arizona State Univ.|NASA Ames Research Center |
| 発行日 | 1991-02-10 |
| 言語 | eng |
| 内容記述 | In laboratory simulations of the Venusian environment, rock and mineral 'target' surfaces struck by aeolian particles develop a thin layer of accretionary material derived from the particles' attrition debris. Accretion may be (in part) a manifestation of 'cold welding', a process well known in engineering, where bonding occurs between metals at a tribological interface. Accretion on geological materials was found to occur at all Venusian surface temperatures and for all types of materials tested. First-order variations in the amount deposited by particles are related to relative attrition susceptibilities. Second-order variations relate to properties of the particle-target interface. Variations in accretion volume are apparently independent of mineral chemistry and are only weakly dependent on crystallography. The results suggest that accretion should be a fairly universal phenomenon in areas of Venus subject to aeolian activity. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 91A25512 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/350119 |
