| Autor: |
D.A. Romanov, S. V. Moskovskii, A. D. Filyakov, V. E. Gromov, K.V. Sosnin |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
IOP Conference Series: Materials Science and Engineering. 447:012077 |
| ISSN: |
1757-899X |
| DOI: |
10.1088/1757-899x/447/1/012077 |
| Popis: |
Studies of the phase and elemental composition of the surface layer of the copper electric contact of the KPV-604 contactor subjected to electro-explosive spraying of the composite SnO2-Ag-coating were carried out by means of transmission electron microscopy. The scale of elemental structure of the coating surface varies within a very wide interval after electro-explosive spraying – from hundreds of micrometers to tens of hundreds of nanometers. According to the morphological structure, two layers can be distinguished in the coating volume: the coating itself and the heat affected layer smoothly transferring into the bulk of the sample. A nanocrystalline structure was detected. The main phases of the coating are SnO2, Ag3Sn, Cu10Sn3, Cu3Sn, Cu6Sn5, Ag4Sn and CuO. The volume of copper adjacent to the coating has a fragmented structure indicating a high level of deformation of the sample surface layer under the electro-explosive formation of the coating. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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