| タイトル | Auger electron spectroscopy study of oxidation of a PdCr alloy used for high-temperature sensors |
| 本文（外部サイト） | http://hdl.handle.net/2060/19930014229 |
| 著者（英） | Zeller, Mary V.; Vargas-Aburto, Carlos; Boyd, Darwin L. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1993-03-01 |
| 言語 | eng |
| 内容記述 | A Pd-13 wt. percent Cr solid solution is a promising high-temperature strain gage alloy. In bulk form it has a number of properties that are desirable in a resistance strain gage material, such as a linear electrical resistance versus temperature curve to 1000 C and stable electrical resistance in air at 1000 C. However, unprotected fine wire gages fabricated from this alloy perform well only to 600 C. At higher temperatures severe oxidation degrades their electrical performance. In this work Auger electron spectroscopy was used to study the oxidation chemistry of the alloy wires and ribbons. Results indicate that the oxidation is caused by a complex mechanism that is not yet fully understood. As expected, during oxidation, a layer of chromium oxide is formed. This layer, however, forms beneath a layer of metallic palladium. The results of this study have increased the understanding of the oxidation mechanism of Pd-13 wt. percent Cr. |
| NASA分類 | METALLIC MATERIALS |
| レポートNO | 93N23418
NASA-TM-106212
E-7538
NAS 1.15:106212 |
| 権利 | No Copyright |
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