Alumina is the most commonly used ceramic material in industry, comprising over 35% of the technical ceramics materials market. Alumina and zirconia together dominate the technical ceramics materials market, comprising almost 55% of the total market. Marvel Medtech Advanced Manufacturing offers alumina ceramics additive manufacturing (AM) / 3D printing services using XJet’s Nano-Particle Jetting (NPJTM) technology. NPJ™ AM technology allows fabrication of alumina ceramic parts with high resolution, smallest feature size and geometric complexity that cannot be made with legacy ceramics manufacturing approaches. Marvel Medtech Advanced Manufacturing offers custom alumina ceramics parts to meet your exact specifications.
What is Alumina Ceramic?
Alumina is an oxide ceramic (aluminum oxide, Al2O3) material that offers an attractive combination of mechanical and electrical properties that make it an ideal choice for many engineering applications. Alumina maintains its unique mechanical, chemical resistance and electrical insulating properties at very high temperatures and offers superior abrasion resistance. The fracture toughness of alumina actually increases at cryogenic temperatures, making it a good choice for applications over a very wide temperature range. Alumina is commonly available with purities ranging from 85% to 99.99%, and its properties can be fine-tuned for specific applications by addition of other compounds. Marvel Medtech Advanced Manufacturing offers additive manufacturing (AM) / 3D printing of alumina with the highest purity (99.99 %).
Material Properties of XJet NPJ™ AM (Additive Manufacturing) of Alumina Ceramic
|
Property
|
Value
|
Units
|
|
Density
|
3.93
|
g/cc
|
|
Density
|
>99.5
|
%
|
|
Hardness
|
14.5
|
GPa
|
|
Flexural Strength
|
450
|
MPa
|
|
Young’s Modulus
|
387
|
GPa
|
|
Fracture Toughness
|
3.4
|
MPa/m
|
|
Compressive Strength
|
2700
|
MPa
|
|
Thermal Conductivity
|
32
|
W/mK
|
|
Coefficient of Thermal Expansion
|
7.1 @40-400 oC
8.0 @40-800 oC |
ppm/oC E-6
|
|
Specific Heat Capacity
|
0.78
|
J/Kg°K
|
|
Sintering Temperature
|
1700 (3100)
|
°C (°F)
|
|
Volume Resistivity
|
20°C – 1.0E+15 300°C – 2.5E+13 500°C – 5.8E+10 |
Ω∙cm
|
|
Dielectric Strength
|
17
|
kV/mm
|
Characteristics of AM (Additive Manufacturing)Alumina Ceramic Parts made with XJet NPJ™ Technology
|
Dimensional Tolerance: Dimensions ≤5cm
|
20-50 microns
|
|
Dimensional Tolerance: Dimensions >5cm
|
100 microns
|
|
Minimum Feature Size
|
200 Microns (Smaller may be achievable depending on part size and design)
|
|
Surface Roughness
|
N7-N9
|
|
Sintering Shrinkage
|
14.5% Linear, Isotropic
|
|
Print Tray Size
|
140mm x 500mm
|
Contact Us
At Marvel Medtech Advanced Manufacturing, we have acquired highly specialized insights, knowledge and capabilities in the application and use of the XJet NPJ™ system for demanding technical ceramics AM applications. Please contact us at 1-877-345-6261 or 1-608-688-0868 with your questions about our technical ceramics AM capabilities and services. Or you can Request a Quote for Your Project from our website to receive a secure file upload link.