摘要
热镀锌由于其优异的耐蚀性能以及较低成本已成为使用最广泛的锌基覆盖层技术之一,但该技术存在能耗高、待镀工件尺寸受限、不适合现场施工等不足。为此,探讨了能够替代热镀锌的其他锌基覆盖层技术,并从首次维修寿命、寿命周期成本2方面因素对这些锌基覆盖层技术进行了比较。结果表明:热镀锌技术在性能和成本方面具有不可替代性。但热镀锌在生命周期中需要消耗大量锌锭和能源,直接或间接产生较大的碳足迹数值,在国家碳中和目标下,该技术可能会受到限制。在“双碳”目标下,已经出现了一些替代热镀锌技术的实际应用,最后展望了碳中和背景下最具替代潜力的锌基覆盖层技术。
Hot-dip galvanizing is one of the most widely applied zinc coating techniques due to its excellent corrosion resistance and low cost.However,this technology still has shortcomings such as high energy consumption,limited size of the workpiece to be plated,and unsuitable for field plating.Therefore,in this paper,other zinc coating techniques that could be alternatives to hot-dip galvanizing were discussed,and the lifes to first maintenance and life cycle costs of these zinc coatings were compared.Results revealed that hot-dip galvanizing was irreplaceable for its advantages in performance and cost.Nevertheless,hot-dip galvanizing consumed a large amount of zinc ingots and energy during the life cycle,which directly or indirectly produced a large carbon footprint.So this technology might be restricted due to the national carbon neutral goal.Some practical applications of alternatives to hot-dip galvanizing were developed under carbon neutrality target.Finally,the most promising alternatives to hot-dip galvanizing under carbon neutrality target were prospected.
作者
杨甫
钟路
夏思瑶
高名传
YANG Fu;ZHONG Lu;XIA Si-yao;GAO Ming-chuan(Wuhan Research Institute of Materials Protection,Wuhan 430030,China)
出处
《材料保护》
CAS
CSCD
2022年第12期150-155,176,共7页
Materials Protection
关键词
热镀锌
替代技术
首次维修寿命
寿命周期成本
碳足迹
hot-dip galvanizing
alternative
life to first maintenance
life cycle cost
carbon footprint
