As a special industrial ceramic, zirconia ceramics will be used in various fields, and its quality and performance feedback is also very good. To get the zirconia ceramic material, the first thing to do is to perform a performance quality inspection on it to ensure that all aspects can meet the standard specifications and put into use in a qualified state. So how to inspect the quality of zirconia ceramic materials?
Zirconia ceramic material quality inspection:
1. Dielectric constant of substrate: >30;2, inspection material: zirconia ceramic material;
3, steel ball drop: 20g steel ball, 50cm height fell to the diameter of 10mm ceramic center, ceramic material placed on the rigid flat marble, three times, no cracks appear in the ceramic sheet;
4, pencil hardness: ≥8H;
Test method: Mitsubishi test pencil, 750gf pressure, pencil lead and the surface to be measured at an Angle of 45°, in the position to be measured 5 strokes, each stroke length 10mm(using 5 parallel lines, line distance >3mm, no interference between the test lines can be), do not allow the surface of permanent indentation;
5, the cutting edge of the substrate is sharp, the depth of the collapse is <0.03mm, the surface shall not appear pits, impurities, cracks, scratches and other defects;
6. Four-point bending strength: ≥500MPa;
Four-point bending strength test method: upper span: 20mm, lower span: 40mm, press rod diameter: ￠6, press down speed: 10mm/min, press down until the oxidized ceramic material breaks;