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Abstract <p>The development of new heat-resistant cobalt alloys for the aerospace industry allows exceeding the temperature capabilities of nickel superalloys. Cobalt alloys, however, are less resistant to high-temperature oxidation, and alloying cobalt alloys with aluminum or chromium can lead to the formation of brittle topologically dense phases. As a solution to this problem, surface alloying with the chromium of cobalt alloys, carried out by the interaction of their preoxidized surface with chromium from the gas phase, is proposed.</p>

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The Reduction of the Oxidized Surface of Cobalt–Rhenium Alloys with Chromium from the Gas Phase

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • I. I. Fedorayev,
  • L. I. Bakhratov,
  • N. E. Dmitrieva

摘要

Abstract

The development of new heat-resistant cobalt alloys for the aerospace industry allows exceeding the temperature capabilities of nickel superalloys. Cobalt alloys, however, are less resistant to high-temperature oxidation, and alloying cobalt alloys with aluminum or chromium can lead to the formation of brittle topologically dense phases. As a solution to this problem, surface alloying with the chromium of cobalt alloys, carried out by the interaction of their preoxidized surface with chromium from the gas phase, is proposed.