Metal corrosion is a common phenomenon that a refined metal is converted into its oxidized form or other compounds, and it may cause lots of trouble. For one thing, deterioration is dangerous for infrastructures - pipes would leak, and buildings would collapse. For another, it takes a large amount of money to prevent or fix corrosion - the United States spends nearly $300 billion on corrosion problems each year . So a variety of methods and materials are employed to protect metals from corrosion.
Several methods are taken to protect metals from design, manufacturing to the utilization of metals:
A boron nitride nanosheet is a two-dimensional boron nitride acquired by chemical vapor deposition (CVD) and applied to various industries. Boron nitride nanosheets have desirable properties to be used as protective barriers. Similar to graphene, it is quite hard in terms of physical features. But boron nitride nanosheets have stability and dielectric features, which is quite different compared with graphene. Boron nitride nanosheets also stand out for the following properties:
It is rather common to use metal and ceramic coatings to slow metal deterioration. Graphene has been used as the protective coating in the past, but BN nanosheet takes its place with the proper properties listed below:
Let’s discuss the protective effect of BN nanosheets using a specific case. In this case, a bare copper foil was heated at 250 °C in the open air for 100 hours. The control group employed the same bare metal piece with BN nanosheet coatings. The performance of each group under high temperatures was observed as follows:
The anti-corrosion performance of BN nanosheet protective coating has been proved in detail in this case.
Optical microscopy photos of the bare Cu foil (Cu) and the BN-covered Cu foil (BN+Cu) before (0 h) and after heating at 250 °C in air for 2, 20 and 100 h. For comparison, the exposure time for all the photos is the same. The scale bars are 100 μm. The insets are the corresponding digital camera photos.
The BN materials are extensively used in a range of fields other than making protective coatings.
Boron nitride nanosheets offer effective protective barriers for metals thanks to their stability and dielectric features. Advanced Ceramic Materials (ACM) offers high-quality boron nitride nanosheets of various purities and sizes. Please visit https://www.preciseceramic.com/ for more information about BN materials or other related ceramic materials.
 Koch, Gerhardus & Brongers, Michiel & Thompson, N. & Virmani, Y. & Payer, Joe. (2001). Corrosion Cost and Preventive Strategies in the United States.
 Li, Luhua & Xing, Tan & Chen, Ying & Jones, Robert. (2014). Boron Nitride Nanosheets for Metal Protection. Advanced Materials Interfaces. 1. 10.1002/admi.201300132.
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How Are Ceramic Components Made? (With Infographic)