In the aerospace and aviation industries, every rough surface, sharp edge, or imperfection has the potential to lead to disastrous consequences. Or, at the very least, cost a lot of money as a result of decreased efficiency caused by higher friction and wear-and-tear. As a result, abrasives are an important part of the manufacturing process.
Abrasives are the hard crystals either manufactured or found in nature are materials used to clean, grind, or polish hard surfaces like metals and alloys. They’re also commonly used to work with other materials such as stone, glass, plastic, wood, and rubber. Abrasives work by scratching. The particles will first penetrate the surface and then cause a tearing off of particles. However, it only works if the abrasive is has a higher hardness rating than the abraded material. As a result, the most common abrasives are made of materials like aluminum oxide, silicon carbide, cubic boron nitride, and even diamond, which have Mohs hardness ratings of 9+.