海南省博物馆馆藏出水古铁炮腐蚀产物分析

Analysis of Corrosion Products on Underwater Iron Cannon Artifacts from Hainan Province Museum

海南省博物馆馆藏了7门明清时期的铁炮,这些铁炮曾长久沉没在海水中,且由于各个时期冶铸技术的差异导致铁炮的腐蚀程度不一。保存修复这些腐蚀严重的出水古铁炮是个重要课题。采用X射线荧光仪(XRF)、X射线衍射仪(XRD)等分析了出水古铁炮腐蚀产物的成分和物相组成。结果表明,铁炮腐蚀产物含有Fe3O4,α-FeOOH,β-FeOOH(或Fe8(O,OH)16Cl1.3)和γ-FeOOH,其中γ-FeOOH对铁炮具有破坏作用,属于有害锈,必须除去。腐蚀产物的确定为中国海洋出水铁炮的下一步除锈、脱盐等保护处理提供依据。

There are 7 iron cannons conserved in Hainan Province Museum, these iron cannons sunk in the sea for a long time. l）ifferent metal working technologies in various periods results in different levels of corrosion of iron cannons.To conserve and restore the underwater iron cannons is an important issue The composition and structure of the corrosion products from these iron cannons were analyzed using X-ray fluorescence （XRF） and X-ray diffraction （ XRI ））. The results show that the rust includes Fe3O4 . α-Fe（ X ）H. β-FeOOH or Fes （O, OH） 16,Cl1.3 and γ-FeOOH. The harmful rust γ FeOOH must be removed. All the information will be useful to guide the desalination after the surface rust is moved.