ABSTRACT:Objective To study the mould resistance of protective layers on high-strength alloy structural steel and high-strength aluminum alloy. Methods Different protective layers were prepared on high-strength alloy structural steel and high-strength aluminum alloy. Laboratory mould tests were carried out according to GJB 150.10A-2009 to evaluate the mould growth level on the protective layers. Results The mold levels of lubricant coating and anode oxidation layer on high-strength alloy structural steel and high-strength aluminum alloy were in the range of grade 0~1;the mold level of gun oil coating, paint coating, zinc layer or zinc nickel alloy layer moldy grade were in the range of grade 2~3. Conclusion For high-strength alloy structural steel substrate, lubricant coating had good mould resistance, while galvanized layer or zinc alloy layer, paint coating and gun oil coating had poor mould resistance. Forhigh-strength aluminum alloy substrate, anode oxidation layer had good mould resistance, while gun oil coating and paint coating had poor mould resistance.%目的：研究高强合金结构钢和高强铝合金防护层的耐霉菌腐蚀能力。方法以高强合金结构钢和高强铝合金两种材料为基材分别制备不同防护层，按GJB 150.10A—2009进行实验室霉菌试验，评定防护层的长霉等级。结果两种材料的不同防护层中，除润滑油涂层和阳级氧化层的长霉等级为0～1级外，炮油涂层、涂漆层、镀锌层或锌镍合金层长霉等级均在2～3级。结论高强合金结构钢润滑油涂层耐霉性能良好，镀锌层或锌镍合金层、涂漆层、炮油涂层耐霉性能较差；高强铝合金阳级氧化层耐霉性能良好，炮油涂层、涂漆层耐霉性能较差。
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