空调中实际使用的弯曲铝管和铜管的腐蚀和降解行为

IF 1.6 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-06-12 DOI:10.1002/maco.202414453
Seiji Uchiyama, Satoshi Uemura, Takeharu Hayashi, Yuji Kimura, Shiro Seki
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引用次数: 0

摘要

尽管铜(Cu)管因其高导热性和耐候性而被广泛应用于制冷剂管道,但铜的价格不断上涨和供应有限的问题却令人担忧。因此,我们将重点转移到相对丰富且价格低廉的铝(Al)上,研究其在制冷剂管道中的应用。我们之前研究了直管内外表面的腐蚀因素,并进行了加速降解试验,结果表明铝的耐用性与铜相当。然而,除直管外,还经常使用弯曲部分,弯曲会在弯曲曲率的外侧产生拉应力,在内侧产生压应力。值得注意的是,在腐蚀环境中,拉应力可能会导致应力腐蚀开裂。在此,我们研究了弯曲铝管和铜管的机械、电化学和耐候性能,以评估铝制冷剂管道的实用性。
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Corrosion and degradation behavior of bent aluminum and copper pipes for practical use in air conditioning

Although copper (Cu) pipes are widely used in refrigerant piping owing to their high thermal conductivity and weathering resistance, there are concerns regarding the increasing price and limited supply of Cu. Consequently, our focus has shifted to aluminum (Al), which is relatively abundant and inexpensive, to investigate its application in refrigerant piping. We previously examined corrosion factors on both the internal and external surfaces of straight piping and conducted accelerated degradation tests, showing that Al has a durability comparable to that of Cu. However, bending sections are always used in addition to straight pipes, and bending induces tensile stress on the outer side of the bending curvature and compressive stress on the inner side. Notably, stress corrosion cracking may occur under tensile stress in corrosive environments. Herein, we investigate the mechanical, electrochemical, and weather resistance properties of bent Al and Cu pipes to evaluate the practicality of Al refrigerant piping.

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来源期刊
Materials and Corrosion-werkstoffe Und Korrosion
Materials and Corrosion-werkstoffe Und Korrosion 工程技术-材料科学:综合
CiteScore
3.70
自引率
11.10%
发文量
199
审稿时长
1.4 months
期刊介绍: Materials and Corrosion is the leading European journal in its field, providing rapid and comprehensive coverage of the subject and specifically highlighting the increasing importance of corrosion research and prevention. Several sections exclusive to Materials and Corrosion bring you closer to the current events in the field of corrosion research and add to the impact this journal can make on your work.
期刊最新文献
Calendar of Events Cover Picture: Materials and Corrosion. 11/2024 Masthead: Materials and Corrosion. 11/2024 Contents: Materials and Corrosion. 11/2024 Calendar of Events
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