Scholarlink

<p>The oxidation of a mirror-polished γ/γ′ TROPEA alloy was monitored in real time using high-temperature environmental scanning electron microscopy (HT-ESEM) to investigate the formation of protective oxides during the temperature ramp-up of the alloy in air. The sample was subjected to a series of 18 consecutive temperature steps, ranging from 25&#xa0;°C to 966&#xa0;°C. At each temperature increment, secondary electron images of the top surface of a representative γ/γ′ region were recorded until sufficient oxide growth was achieved for detailed characterization. Elemental distribution mapping (via EDX) and topography measurements (using AFM) were performed at each step to track surface evolution. Subsequently, the same region continuously observed in the ESEM was cross-sectioned using focused ion beam (FIB) milling and further characterized by scanning transmission electron microscopy (STEM) coupled with EDX. This tailored experimental approach enabled the identification of the distinct stages occurring in air during the heat-up of Ni-based superalloys, up to 966&#xa0;°C.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Ni-Based Single Crystal Superalloy Oxidation Studied by High Temperature Environmental Scanning Electron Microscopy: Part 1—Unveiling the First Moments of Oxidation

  • 期刊论文

  • 发表日期：

    2026年7月27日

查看全文
  • R. Podor,
  • T. Duprat,
  • F. Pedraza,
  • J. Cormier,
  • L. Aranda,
  • K. El Bouaissi Dos Santos,
  • M. Odorico,
  • J. Lautru,
  • P. Kontis,
  • M. Vilasi,
  • S. Mathieu

摘要

The oxidation of a mirror-polished γ/γ′ TROPEA alloy was monitored in real time using high-temperature environmental scanning electron microscopy (HT-ESEM) to investigate the formation of protective oxides during the temperature ramp-up of the alloy in air. The sample was subjected to a series of 18 consecutive temperature steps, ranging from 25 °C to 966 °C. At each temperature increment, secondary electron images of the top surface of a representative γ/γ′ region were recorded until sufficient oxide growth was achieved for detailed characterization. Elemental distribution mapping (via EDX) and topography measurements (using AFM) were performed at each step to track surface evolution. Subsequently, the same region continuously observed in the ESEM was cross-sectioned using focused ion beam (FIB) milling and further characterized by scanning transmission electron microscopy (STEM) coupled with EDX. This tailored experimental approach enabled the identification of the distinct stages occurring in air during the heat-up of Ni-based superalloys, up to 966 °C.