内蒙古快3

How and why should I measure the strength of a protective coating?

Share this:
Q:

How and why should I measure the strength of a protective coating?

A:

Modern industrial processes continue to place heavy demands on tools, equipment and structures. As a result, the protective coatings used to shield these assets must be able to maintain their integrity, particularly in aggressive and challenging environments.

Coating strength is defined as the ability of the coating to withstand loading without a coating failure (e.g., peeling, adhesion loss, cracking, wrinkling, erosion, etc.). This property is a direct indicator of the effectiveness of the protection offered. If the coating does not possess enough strength to resist applied forces, then it can fail and put the asset at risk for severe corrosion. (Be sure to download our Coating Failures and Defects Guide.)

Coating strength is measured by several mechanical tests. These tests involve subjecting the coating to multiple load conditions while observing the coating's response. Various coating strength properties are measured using several tests methods, some of which include:

Hardness Test

Coating hardness measures the ability of the coating to withstand indentation or deformation from external forces (e.g., a sudden impact). This property is measured using several tools, including the Buchholz indentation, pendulum hardness and 内蒙古快3pencil hardness tests.

Abrasion Test

The abrasion test measures the coating's resistance to removal via scraping. This test determines the coating's ability to remain in place when rubbed against another surface. The Taber abrasion内蒙古快3 test and scrub abrasion test are most commonly used to measure this property.

Adhesion Test

The adhesion test, as its name implies, measures the quality of the bond between the coating and the substrate. If the coating lacks sufficient adhesion to the surface, it can peel or flake off, leaving the substrate exposed and vulnerable to corrosion. Coating adhesion tests include the pull-off adhesion test, the tape adhesion test and the crosscut adhesion test. (Learn more about adhesion testing in 4 Types of Tests that Measure the Strength of a Coating.)

Flexibility Test

When a coated material undergoes deformation, the coating needs to be able to deform likewise while maintaining its integrity. The most common way of measuring the flexibility of a coating is to bend a coated panel over a cylindrical or conical-shaped bar. If the coating is too brittle内蒙古快3, it will develop cracks as a result of the bending.

Have a question? Ask us here.

View all questions from Krystal Nanan.

Share this:
Written by Krystal Nanan
Profile Picture of Krystal Nanan
Krystal is a civil engineer and project manager with an MSc in Construction Engineering and Management. Her experience includes the project management of major infrastructure projects, construction supervision, and the design of various infrastructure elements including roadway, pavement, traffic safety elements and drainage. Krystal is also a published author with the Transportation Research Board in Washington, D.C. Full Bio

Connect with us

Email Newsletter

Join thousands receiving the latest developments in corrosion technology industry。

report this ad
股票配资 甘肃快3 湖北快3 北京赛车PK10计划 全球彩票注册 秒速赛车登陆 迪士尼彩乐园娱乐 北京快3 pk10怎么玩 极速快三