(Yicai Global) Sept. 25 -- A Zhejiang-based research team from the Chinese Academy of Sciences has successfully developed a new graphene anticorrosive coating with proprietary intellectual property rights.
The new coating can protect steel from corrosion by high salinity, humidity and temperatures in tropical marine environments. It took years of work by the research team, which was led by Wang Liping and Xue Qunji, China Youth Daily reported on Sept. 25.
Academic institutions have tested the coating and verified it can provide resistance against salt-spray corrosion for 6,000 hours, which is a world-leading achievement.
The scale of China's anticorrosive coating market has reached CNY200 billion (USD30.35 billion), said Wang, adding that demand for heavy anticorrosion coatings grows by more than 20 percent a year. However, 70 percent of the market is dominated by foreign brands because there aren't enough Chinese products. The newly-developed graphene coating could shake up the current market landscape.
Graphene is one of nature's thinnest materials, Wang added. Its separation and shielding abilities are excellent, and it can greatly reduce the thickness of coatings while improving their anticorrosion effects.
Corrosion is one of the more important factors affecting the security and service life of ocean engineering equipment and facilities, especially in tropical oceans. In 2014, corrosion cost China more than USD318 billion, making up about 3.34 percent of the country's gross domestic product that year, the report added.