| 摘要 |
The invention relates to a cobalt-based alloy having mechanical strength at high temperature, in particular in an oxidizing or corrosive medium, essentially comprising the following elements (the proportions being shown as percentage by weight of the alloy): 26 to 34% Cr, 6 to 12% Ni, 4 to 8% W, 2 to 4% Ta, 0.2 to 0.5% C, less than 3% Fe, less than 1% Si, less than 0.5% Mn and less than 0.1% Zr, the remainder being composed of cobalt and inevitable impurities, the molar ratio of tantalum with respect to carbon being of the order of 0.4 to 1. Application to articles which are mechanically stressed at high temperature, in particular articles which. can be used for the preparation or the conversion or glass under hot conditions.
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