zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-1573Research ArticleАННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙABSTRACTS ENGLISH-LANGUAGE ARTICLESСпектроскопический анализ коррозионных характеристик португальской чугунной пушки XVII века из Гоа (Индия)Corrosion Characteristics of XVII Century Portuguese Cast Iron Cannon from Goa (India) Using Spectroscopic AnalysisMeenakshiS.MeenakshiS.

Department of Conservation,

Janpath, New Delhi

Department of Conservation,

Janpath, New Delhi

ManagerR. S.ManagerR. S.

Department of Tourism Administration, 

Chhtrapati Sambhaji Nagar

Department of Tourism Administration,

Chhtrapati Sambhaji Nagar

m_singh_asi@yahoo.comNational Museum InstituteNational Museum InstituteDr. Babasaheb Ambedkar Marathwada UniversityDr. Babasaheb Ambedkar Marathwada University202429052024913459459Copyright © Meenakshi S., Manager R.S., 20242024Meenakshi S., Manager R.S.Meenakshi S., Manager R.S.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://zhps.ejournal.by/jour/article/view/1573

Изучены коррозионное поведение и микроструктурные изменения в чугунных пушках XVII века, выставленных в Археологическом музее в Гоа. Для образцов сколов из четырех пушек проанализированы морфология поверхности, микроструктура и элементный состав с использованием оптической микроскопии, SEM-EDX и рентгеновской дифракции. FTIR-спектроскопия использована для идентификации молекулярной структуры органических соединений, оксидов и оксигидроксидов металлов на поверхности. Показано, что перлитная матрица чугуна содержит графитовые хлопья, которые приводят к своеобразной форме графитовой коррозии на поверхности пушки. Наличие областей сильно локализованной графитовой коррозии на поверхности вызывает образование ямок или серий ямок, представляющих собой потенциальный риск для структурной целостности пушек с течением времени. Исследование идентифицирует присутствие хлоридов как фактора, способствующего процессу коррозии, действующему в тандеме с графитовой коррозией чугуна. Изучение механизмов коррозии имеет важное значение для разработки стратегий, обеспечивающих долгосрочное сохранение исторических артефактов.

The study investigates the corrosion behavior and microstructural changes in seventeenth-century cast iron cannons exhibited at the Archaeological Museum in Goa. Chipped samples from four cannons underwent analysis for surface morphology, microstructure, and elemental composition using optical microscopy, SEM-EDX, and X-ray diffraction. FTIR spectroscopy was employed to identify the molecular structure of organic compounds, metal oxides, and oxyhydroxides on the surface. The findings reveal that the pearlite matrix of the cast iron contains graphite flakes, leading to a distinctive form of graphitic corrosion on the cannon surface. Highly localized graphitic corrosion areas on the surface have resulted in pits or series of pits, posing a potential risk to the structural integrity of the cannons over time. The study identifies the presence of chloride as a contributing factor to the corrosion process, working in tandem with graphitic corrosion of the cast iron. Understanding these corrosion mechanisms is crucial for developing strategies to ensure the long-term preservation of these historical artefacts.

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The authors declare that there are no conflicts of interest present.