High manganese austentic stainless steel with superior corrosion resistance
Overview
The invention is a double layer passivation film structure with excellent corrosion resistance in neutral or acidic environments. It has good potential to be used as anode materials for water electrolysis in environment which requires excellent mechanical properties and high corrosion resistance
Technical name of innovation
High manganese austentic stainless steel with superior corrosion resistance and its application in water splitting
Research completion
2022
Commercialisation opportunities
Licensing
Problem addressed
Electrolysis of water is the main method of hydrogen production. The efficiency of hydrogen production in alkaline environments is far inferior to that in neutral environments and it is necessary to find a low-cost anode material that can be used in neutral or acidic environments and is resistant to high potential corrosionfor electrolytic water equipment.
Innovation
- Double layer passivation film structure
Key impact
- Excellent corrosion resistance in neutral or acidic environment, pitting points more than 1000 mV
- High yield strength of 500Mpa and tensile strength of 1000MPa, elongation can reach 50%
Application
- Acidic or neural water electrolysis equipment
- Offshore platforms and constructions
- Ships, desalination machines used in sea water
Patent
- PRC Application No. 202210425259.5
- US patent application No. (TBC)
The University of Hong Kong (HKU)
Founded in 1911, The University of Hong Kong (HKU) is the first and oldest institution of higher education in Hong Kong. For over a century, the University has dedicated itself to creating knowledge, providing education, and serving society. Today, HKU has an established worldwide reputation for being a research-led comprehensive University with ten Faculties and a strong commitment to intellectual freedom, liberty and diversity. HKU has a proud record of academic recognition in researches through honours and awards received from both local and international bodies.
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