本期節目主要內容：杭州灣大橋、港珠澳大橋、南沙海底工程，在不同的地點，遇到不同的氣候環境，碰到不同的特異物質，這些超級工程就得接受不同程度的腐蝕挑戰。中科院金屬研究所利用幾年的時間，突破了厭氧菌對鋼筋的腐蝕問題，首次在海洋工程中突破陰極保護的難題。（《走近科學》 20181221 超級工程的防腐奧秘（下））
本期節目主要內容：港珠澳大橋的設計壽命打破了國內通常的“百年慣例”，制定了120年的設計標準，這對跨海大橋的基礎結構鋼管樁的耐久性提出了更高的要求。中科院金屬研究所利用幾年的時間，突破了重防腐的涂裝技術；在港珠澳大橋上突破了厭氧菌對鋼筋的腐蝕問題。（《走近科學》 20181220 超級工程的防腐奧秘（上））
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