Loading...

An investigation of the corrosion behavior of some iron artifacts belonging to the early Iron Age

Naeimi Taraei, P ; Sharif University of Technology | 2018

354 Viewed
  1. Type of Document: Article
  2. Publisher: Universitatea "Alexandru Ioan Cuza" din Iasi , 2018
  3. Abstract:
  4. The corrosion process of two iron dagger handles decorated with bronze strips found from the Ziviyeh area, which is one of the important Iron Age sites in the northwest of Iran, is thoroughly investigated. X-ray radiography was used to obtain the damages and corrosion zones of the artifact. Optical and scanning electron microscopies were used to study the microstructure of cross sections and to achieve structural details about the metal matrix and corrosion layers. The X-ray diffraction method was used to study the chemical characterization of corrosion products. The results of studies have shown that severe stress on bronze strips is caused by the formation of goethite and lepidocrocite compounds and their increased volume. Stress corrosion along the inter granules and cracking in some of the bronze strips are observed. The created cracks in the magnetite layers provided shortcuts to transfer the moisture and corrosive anions. The atmospheric corrosion of the remaining ferrous parts continued actively by dewatering corrosion products and creating wet blisters and holes filled with oxyhydroxide products. The formation of oxide compounds of copper and tin on the surface of bronze strips followed a slow process of uniform corrosion in bronze strips to a limited extent. © 2018 Universitatea "Alexandru Ioan Cuza" din Iasi
  5. Keywords:
  6. Corrosion ; Early Iron Age ; Iran ; Iron-bronze bimetallic artifacts ; Ziviyeh
  7. Source: International Journal of Conservation Science ; Volume 9, Issue 2 , 2018 , Pages 277-290 ; 2067533X (ISSN)
  8. URL: http://www.ijcs.uaic.ro/public/IJCS-18-26_Naeimi.pdf