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How to test the quality of zirconia ceramic materials

Date: 2018-07-13
Browse: 22

Zirconium oxide ceramics, as a kind of special industrial ceramics, have been used in various fields, and the feedback of its quality and performance is very good. To obtain zirconium oxide ceramic materials, the first thing to do is to conduct performance quality inspection to ensure that all aspects can meet the standard specifications and be put into use in a qualified state. So how to test the quality of zirconia ceramic materials?

Quality inspection of zirconia ceramic materials

1. Substrate dielectric constant: >30;

2. Inspection materials: zirconia ceramic materials;

3. Drop of steel ball: 20g steel ball falls to the center of ceramics with a diameter of 10mm at a height of 50cm. Ceramic materials are placed on rigid planar marble three times.

4. Pencil hardness: greater than or equal to 8H;

Test method: mitsubishi test pencil, with 750 gf pressure, pencil lead and an Angle of 45 °, the surface under test in measuring position row 5 pens, every 10 mm long (using parallel line 5 line, > 3 mm, don't intervene between test line), do not allow the surface to permanent indentation;

5. The cutting edge of the base material is sharp, and the depth of the fracture is <0.03mm. There shall be no pits, impurities, cracks, scratches or other defects on the surface.

6. Four-point bending strength: greater than or equal to 500MPa;

Four-point bending strength test method: span: 20 mm, the span: 40 mm, compressive bar is ¢diameter 6, press speed is 10 mm/min, press until oxide ceramic material burst;

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