Coating hardness is the capacity of a coating to resist scratching, marring or gouging of foreign objects. The Taber abrasion test was developed as an accelerated wear testing method to simulate the wearing of surfaces over a longer period of time. It involves a flat surface being placed on a turntable platform that rotates on a vertical axis at a fixed speed, with 2 abrasive wheels being placed on opposite corners applied at a specific pressure. With this standardized testing methodology, one can determine the rub-wearing of the surface over time in a matter of minutes, versus the long unpredictable in-use wear testing that would take years to complete.
