Ceramic Hardness Testing

Hardness is a representation of a material s resistance to localised plastic deformation.

Ceramic hardness testing.

In this test a pyramidal diamond indenter is pressed into a polished surface under known loading conditions and the size of the indentation is related to the hardness of the material. An indenter of well defined geometry is pressed into the surface of the sample under a. The mechanical property of a material s hardness is defined as a specific and calculable measure of how resistant a material is to compressive force. Vickers hardness is a resistance value obtained by pressing a diamond indenter onto a test specimen.

Ceramic hardness measurements in engineering are generally measured using a vickers hardness test. The method for measuring the hardness of fine ceramics is defined in jis r 1610 iso 14705. The purpose of hardness testing for ceramic coatings. The pencil scale is a test of hardness that helps to explain to consumers how hard the ceramic coating will be once it s cured to the surface.

Its value helps to characterize resistance to deformation densification and fracture. Hardness testing is frequently used for characterizing mechanical properties of engineering ceramics. The hardness of fine ceramics is generally indicated using a vickers hardness number.