利用光学显微镜和扫描电镜等仪器对湖北枣阳九连墩楚墓出土的两支青铜箭镞的锈蚀情况进行了分析。结果表明: 两支箭镞横截面的组织结构都是由锈蚀矿化层、中间过渡层和基体三部分组成，与长江中下游其他地区出土箭镞的锈蚀形态相似; 两支箭镞的表层锈蚀层并没有形成严重的粉状锈，说明其埋藏保存状况比较良好; 铅含量高的箭镞比铅含量低的箭镞的锈蚀程度更严重，说明青铜器中的铅含量对其腐蚀程度有至关重要的影响。

The rust-eaten characteristic of two ancient bronze arrows excavated from Jiuliandun Chu Tombs in Zaoyang, Hubei was studied by means of optial microscope and scanning electronic microscope. It was found that the fractured surface microstructures of these two ancient bronze arrows were both composed of three distinction layers including completely mineralized layer, transition layer and base metal, similar with that of the ancient bronze arrows excavated in other regions of the middle Yangtse River. Meantime, the powdery rusts in surface layer of corrosion were not awful, which proposed that the embedding environment was not conducive to be rusting the ancient bronze. The rust degree of bronze arrow with higher Pb element content was much more serious than that with lower Pb element content, that is, the content of Pb element was a key factor for the corrosion-resistance of ancient bronze.