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|Type:||Artigo de periódico|
|Title:||The influence of the arc current on the cold electrode erosion|
|Abstract:||A study of copper cathode erosion in a magnetically driven arc setup, as a function of arc current, is reported. The experiments showed the presence of two different erosion regimes. In the low current micro-erosion regime, erosion slowly rises with arc current. Then, at a certain critical current, macro-erosion begins, and has a strong dependence of erosion on current. It was shown that the critical current for transition from micro- to macro-erosion is a linearly decreasing function of the applied magnetic field. The erosion versus current behavior is shown to be explained by a recently published thermal model. (C) 2003 American Institute of Physics.|
|Editor:||Amer Inst Physics|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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