Dongguan Mingrui Ceramic Technology Co.,Ltd
Ceramic Rod has ultra high hardness, good wear resistance and corrosion resistance, as well as good chemical stability such as insulation and oxidation resistance. So it is widely used in instrumentation, medical equipment, watches, abrasives, cutting tools, energy, electricity, automotive, military, aerospace and other high-end areas.
| Properties ||units||95% alumina||99% alumina||zirconia|
| Density || g / cm³ || 3.65 || 3.92 || 5.95-6.0g/cm³ |
| Water absorption || % ||0||0||0|
| Coefficient of thermal expansion || 10-6/K ||7.9||8.5||10.5|
| Poisson's ratio || / ||0.21||0.23||0.3|
| HV Hardness HV || MPa ||1400||1650||1350|
| Flexural Strength @ room temperature || MPa ||280||350||950|
| Heat conductivity @ room temperature || W/ m*k ||18-25||30-35||2-2.5|
| Max use temperature || °C ||1900||2200||1450|
| Thermal Conductivity(25℃) || W/m·K ||30||35||3|
| Dielectric Strength || KV/mm ||9.5||10.2||26|
| Fracture Toughness || MPa *m 1/2 ||3.8||4.5||11|
Generally speaking, the common colors of ceramic rod are white (Ivory), yellow, blue, black because of its different materials.
The forming methods of ceramic rod are as follows:
1. Isostatic pressing. The ceramic rod has the advantages of high density and good strength,but the disadvantage is that the cost is high, meanwhile, the shape is single with complex shape can not be made.
2.Dry pressing molding. The advantage of this method is large parts with special shape is available, The disadvantage is that it is inefficient and can not be mass produced.
3.Injection molding. It has the advantage of being able to customize complex shapes, and is suitable for mass production with low cost, and the disadvantage is that it can only make small parts.