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Wei Du graduated with a master's degree from Lanzhou Jiaotong University, and now is an associate researcher at China Academy of Railway Sciences Corporation Limited, a member of the Railway Facilities Professional Committee of the Chinese Society for Corrosion and Protection, and a director of the Beijing Society for Corrosion and Protection. She mainly engages in the research and development, application, and technical consulting of material corrosion and protection in the railway industry. Having hosted and participated in more than 20 key scientific research projects, she authorized more than 30 invention patents, and won 4 provincial and ministerial-level science and technology awards for innovative achievements.
Wei Du graduated with a master's degree from Lanzhou Jiaotong University, and now is an associate researcher at China Academy of Railway Sciences Corporation Limited, a member of the Railway Facilities Professional Committee of the Chinese Society for Corrosion and Protection, and a director of the Beijing Society for Corrosion and Protection. She mainly engages in the research and development, application, and technical consulting of material corrosion and protection in the railway industry. Having hosted and participated in more than 20 key scientific research projects, she authorized more than 30 invention patents, and won 4 provincial and ministerial-level science and technology awards for innovative achievements. |
Outline
In response to the problems of performance degradation, sealing failure and medium leakage of metal components in air conditioning pipelines due to material corrosion, this study intends to lay the foundation for exploring the causes of corrosion and optimising anti-corrosion measures in the future, ensuring the safe and stable operation of air conditioning pipelines.
Systematic investigation of corrosion mechanisms and cleaning agent effects was conducted using scanning electron microscopy (SEM), atomic force microscopy, corrosive element detection and cleaning agent immersion tests.
Findings indicate dense corrosion pitting on the tail surface of air conditioning copper tubes (TP2 deoxidised copper), with enriched corrosive Cl and P elements serving as primary corrosion drivers. Under continuous immersion, metal corrosion rates significantly exceed air exposure conditions. Both acidic and alkaline cleaning agents exhibit stronger corrosive effects on carbon steel pressure sections and copper tubes than neutral cleaning agents.
The main factors causing corrosion of TP2 deoxygenated copper pipes in air conditioning, the effects of different environments, and types of cleaning agents on the corrosion of pipeline metals have been identified in the study. It provides reliable theoretical support for the optimisation of anti-corrosion design and scientific selection of cleaning agents for air conditioning pipelines.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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