Abstract
The material properties of vapor deposited coatings are sensitive to the growth morphology and microstructure. For certain applications it is desirable to deposit Be-rich coatings that are homogeneous, isotropic, dense, mechanically strong, and smooth. One way to develop this set of properties is to refine the grain size in these deposits to the nanoscale range. In this study, the compositional effects of Cu, Fe, and B additions on the microstructure of Be coatings have been characterized with transmission electron microscopy. Fe and B additions are found to have a dominant affect on grain refinement. Furthermore, an amorphous Be-B phase is found in deposits having compositions in excess of 11 at.% B. Nanoindentation was used to assess the mechanical properties of the coatings. The measured hardness values are correlated with the grain size and compositions of the coatings. The presence of amorphous Be-B phases is found to decrease the coating hardness. © 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 4791-4800 |
| Journal | Acta Materialia |
| Volume | 50 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - 14 Nov 2002 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- Beryllium
- Metallic glass
- Nanocrystalline
- Sputter deposition
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