Austenitic Stainless Steel with Superior Corrosion Resistance and Excellent Mechanical Properties
Overview
The invention describes a distinctive method to prepare Austenitic Stainless Steel which contains Mn and Co only as austenite stablizer to form single FCC phase at room temperature
Commercialisation opportunities
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Problem addressed
The invention solved the drawback of Fe-Cr-Ni based corrosion-resistive steel for its low strengthness to be used as construction materials, as well the possible release of nickel in wearable devices
Key impact
- Stronger ability to resist environmental corrosion than 316L stainless steel, the surface characterization shows the oxide film of the invention in thicker than which on 316L stainless steel. Meanwhile, the invention has a more complete passivation state
- Much higher strength than 316L stainless steel, the values were twice greater than those of commercial 316L stainless steel
- Good long-term corrosion resistance, after rolling process (the rolling amount is 50% of the thickness of the raw material), the yield strength is as high as 1700 Mpa, but the corrosion resistance is equivalent to that of the sample before rolling
Application
- The invention has various applications in which requiring a combination of good mechanical properties and corrosion resistance
- Offshore platforms and constructions, ships, desalination machines used in sea water
- Energy, heavy industries
- Other high end consumer products like kitchen accessories, etc
Patent
- PRC Patent Application No. 202010563089.8
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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