{
  "abstract": "In this study, the oxidation behavior and (Nb, X)Si 2 depletion behavior under isothermal oxidation at 1500 °C in ambient air were investigated for a silicide-coated Nb–16Si–22Ti–5Cr–3Al (at.%) alloy using separate specimens for each oxidation duration. Pack cementation produced an (Nb, X)Si 2 layer (X = Ti, Cr, Al) with an average thickness of approximately 104 μm on the alloy surface. During oxidation, the coating evolved into a SiO 2 /TiO 2 -rich surface scale, an intermediate (Nb, X)Si 2 + (Nb, X) 5 Si 3 region, and an inner (Nb, X) 5 Si 3 layer. The uncoated alloy suffered severe degradation, showing a mass change of −350.5 mg/cm 2 after 20 h. By contrast, the silicide-coated alloy maintained a low mass change of 2.7 mg/cm 2 after 20 h, confirming effective surface protection within the stable regime. A phase-fraction-based analysis of cross-sectional BSE images showed that the retained (Nb, X)Si 2 area fraction decreased linearly with oxidation time, giving an estimated (Nb, X)Si 2 depletion time of ∼22.4 h under the present oxidation condition. After 23 h, the coated alloy showed rapid mass loss (−238.8 mg/cm 2 ) and substrate oxidation, which occurred near the estimated depletion time of the protective (Nb, X)Si 2 phase. These findings demonstrate that the silicide coating can provide short-term oxidation protection for the Nb–16Si–22Ti–5Cr–3Al alloy under the specific 1500 °C condition investigated here, and the phase-fraction analysis provides a condition-specific (Nb, X)Si 2 depletion-time estimate under the present oxidation condition.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Materials Science and Engineering, Hanbat National University, Daejeon, 34158, Republic of Korea; Jinhap, Co., Daejeon, 34302, Republic of Korea",
    "Department of Materials Science and Engineering, Hanbat National University, Daejeon, 34158, Republic of Korea",
    "Department of Materials Science and Engineering, Hanbat National University, Daejeon, 34158, Republic of Korea; Advanced Materials & Processing Center, Institute for Advanced Engineering, Yongin, 17180, Republic of Korea",
    "Jinhap, Co., Daejeon, 34302, Republic of Korea",
    "Department of Materials Science and Engineering, Hanbat National University, Daejeon, 34158, Republic of Korea; Corresponding author."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Jungseok Oh"
    },
    {
      "affs": [
        1
      ],
      "name": "Sunjin Kim"
    },
    {
      "affs": [
        2
      ],
      "name": "Jini Park"
    },
    {
      "affs": [
        1
      ],
      "name": "Hayeong Yang"
    },
    {
      "affs": [
        3
      ],
      "name": "Jeong-Muk Choi"
    },
    {
      "affs": [
        1
      ],
      "name": "Sangyeob Lee"
    },
    {
      "affs": [
        1
      ],
      "name": "Choong-Heui Chung"
    },
    {
      "affs": [
        4
      ],
      "name": "Joon-Sik Park"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/an20a3k4ma1fr.bib",
  "cited_by": 0,
  "doi": "10.1016/j.apsadv.2026.101066",
  "fulltext_url": "http://www.sciencedirect.com/science/article/pii/S2666523926001364",
  "id": "an20a3k4ma1fr",
  "issns": [
    "2666-5239"
  ],
  "landing_url": "https://doi.org/10.1016/j.apsadv.2026.101066",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "TA401-492"
    ],
    [
      "lcc",
      "TP250-261"
    ],
    [
      "openalex",
      "2202|High-Temperature Coating Behaviors"
    ]
  ],
  "openalex": "W7213060995",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-24",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/an20a3k4ma1fr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:44:31Z",
      "native_id": "5bbb81559bd64409878b7e493e44b80e",
      "source": "doaj",
      "url": "https://doi.org/10.1016/j.apsadv.2026.101066"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "lcc:TP250-261",
      "subfield": "electrochemistry-energy"
    }
  ],
  "title": "Oxidation behavior and condition-specific (Nb, X)Si",
  "title_text": "Oxidation behavior and condition-specific (Nb, X)Si",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:44:31Z",
  "url": "https://research.draconitic.com/paper/an20a3k4ma1fr",
  "venue": "Applied Surface Science Advances",
  "versions": []
}