{
  "abstract": "Magnesium aluminosilicate (MAS) glasses are attractive candidates for high-modulus (HM) reinforcing fibres but are prone to crystallisation, which restricts the usable forming window. Four MAS compositions modified with Y2O3 (T9, V9) or a combined Y 2 O 3 /ZnO addition (T10, V10) were investigated on a single experimental platform to define the window for crystallisation-free fibre drawing. Two base glasses were compared: an MgO-rich, Al 2 O 3 -lean variant (T series) and an Al 2 O 3 -rich, MgO-lean variant (V series). Compositions were verified by ICP-OES/MS, and characterised by dilatometry, DSC, rotational viscometry with Vogel–Fulcher–Tammann fits, gradient-furnace liquidus measurement and X-ray diffraction. The V series shows a glass transition 30–40 K above the T series and a 20 % lower thermal expansion coefficient. Substituting half of the Y 2 O 3 by ZnO lowers the glass transition by 13–30 K and raises the liquidus of the Al 2 O 3 -rich base from 1311 to 1340 °C. The DSC crystallisation onset lies a near-constant 33–37 K above the glass transition across all four glasses, indicating a kinetic barrier set by the MAS network rather than by the modifiers. All four were drawn into fully amorphous continuous fibres from nozzle temperatures only 40–69 K above their liquidus, and remain calorimetrically indistinguishable from the parent glass; V10, drawn 40 K above the highest liquidus, is the most stringent case. Crystallisation-free forming is therefore controlled by the rapid quench inherent to filament drawing rather than by a positive thermodynamic margin. The results support Y 2 O 3 -rich, Al 2 O 3 -rich compositions for HM-MAS fibre scale-up.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "name": "Muawia Dafir",
      "orcid": "0009-0002-1985-8560"
    },
    {
      "name": "Holger Cebulla"
    },
    {
      "name": "Martin Kilo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/66jjfx753vbe2.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15009045/v1",
  "fulltext_url": null,
  "id": "66jjfx753vbe2",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009045/v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2503|Glass properties and applications"
    ]
  ],
  "openalex": "W7213548343",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-18",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/66jjfx753vbe2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:19Z",
      "native_id": "10.26434/chemrxiv.15009045",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009045/v2"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2503|Glass properties and applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Processing–structure–property relationships of Y2O3- and ZnO-modified MgO–Al2O3–SiO2 glasses for high-modulus fiber drawing",
  "title_text": "Processing–structure–property relationships of Y2O3- and ZnO-modified MgO–Al2O3–SiO2 glasses for high-modulus fiber drawing",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:22Z",
  "url": "https://research.draconitic.com/paper/66jjfx753vbe2",
  "venue": "ChemRxiv",
  "versions": []
}