Fig. 2From: Microstructure and long-term corrosion of archaeological iron alloy artefactsOptical images of the dense corrosion products (oxidised parts) of a object #1, b object #4, c object #2, d object #3. Only the main oxide in the different zones is indicated here. A complete compilation of the oxides present are indicated in Fig. 4 (object #1), Fig. 5 (objects #2 and #4) and Fig. 6 (object #3). The red arrows show the cracksBack to article page