Ceramic and Cermet Powder
Ceramic and Cermet Powder
Ceramic powders are typically composed of oxides, carbides, nitrides, or silicates. Common examples include alumina (Al2O3), chromium oxide (Cr2O3), Titanium oxide (TiO2), zirconia (ZrO2), yttrium oxide (Y2O3), yttria-stabilized zirconia, silicon carbide (SiC), chromium carbide (CrC), tungsten carbide (WC), titanium carbide (TiC), Niobium carbide (NbC), titanium nitride (TiN), Aluminium nitride (TiN) and silicon nitride (Si3N4).
Cermet powders are often referred to as ceramic-metal composites, combine metallic and ceramic materials to leverage the advantageous properties of both. Metals contribute ductility and toughness, while ceramics provide hardness, wear resistance, and thermal stability.
Ceramic powders can be produced by reaction sintering, agglomeration sintering, carbothermal, melt crushing, ball milling or spray drying. Cermet powders can be produced by mechanical alloying, mechanical crushing, chemical processes, or atomization and then blending.
Ceramic powders are the basis for producing ceramics through processes like sintering, pressing or additive manufacturing by SLS (selective laser sintering) or binder jetting. Al2O3 powders can be used in electrical insulators, abrasive media. ZrO2 powders can be applied in biomedical implants, oxygen sensors. Nano-ceramics can have enhanced mechanical / thermal properties for electronics and coatings.
Cermet powders mainly are applied in cutting tools or drill bits (tungsten carbide – cobalt cermets), turbine blades via additive manufacturing, automotive brake and engine components.
Powder Shape:
AlN powder by granulation method
AlN powder by Carbothermal reduction
Datasheet
Our coarse-grained Al2O3 powders are produced by granulation method, which are widely used as raw materials for refractory materials, grinding materials, ceramics, etc. It can achieve high sintering density at low temperature and have good filling properties.
Our fine-grained Al2O3 powders are ground down to the size of fine particles from standard-sized oxidized alumina which is widely used as a raw material for ceramic, electronic and refractory materials.
|
Item |
Unit |
MO-A-120 |
MO-A-100 |
MO-A-80 |
MO-A-60 |
MO-A-45 |
MO-A-25 |
|
Al2O3 |
% |
95 |
95 |
95 |
99.5 |
99.5 |
99.5 |
|
Na2O |
% |
0.08 |
0.08 |
0.08 |
0.25 |
0.25 |
0.25 |
|
Fe2O3 |
% |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
|
SiO2 |
% |
0.05 |
0.05 |
0.05 |
0.03 |
0.03 |
0.04 |
|
D10 |
um |
/ |
/ |
/ |
25 |
15 |
10 |
|
D50 |
um |
120 |
100 |
80 |
60 |
45 |
25 |
|
D90 |
um |
/ |
/ |
/ |
115 |
100 |
80 |
|
Item |
Unit |
MO-A-10 |
MO-A-7.1 |
MO-A-5.5 |
MO-A-4.0 |
MO-A-2.2 |
MO-A-0.6 |
|
Al2O3 |
% |
99.5 |
99 |
99 |
99 |
99 |
99 |
|
Na2O |
% |
0.30 |
0.07 |
0.10 |
0.07 |
0.07 |
0.07 |
|
Fe2O3 |
% |
0.03 |
0.02 |
0.02 |
0.02 |
0.03 |
0.02 |
|
SiO2 |
% |
0.04 |
0.03 |
0.05 |
0.02 |
0.04 |
0.03 |
|
D10 |
um |
3 |
/ |
/ |
/ |
/ |
/ |
|
D50 |
um |
10 |
7.1 |
5.5 |
4.0 |
2.2 |
0.6 |
|
D90 |
um |
35 |
22 |
15.0 |
9.5 |
7.0 |
3.0 |
The thermal conductivity of AlN is ten times that of Al2O3, reaching 80-320W/m.K. Therefore, it is an important raw material for preparation of AlN ceramic substrates and the production of various types of high thermal conductivity products.
The fine-grade AlN powder is produced by a carbonthermal reduction process using a highly active aluminium source and carbon source. The course-grade AlN powder is produced by granulation method.
|
Item |
Unit |
MN-A-110 |
MN-A-80 |
MN-A-50 |
MN-A-30 |
MN-A-8.0 |
MN-A-3.0 |
MN-A-0.5 |
|
C |
% |
0.05 |
0.05 |
0.05 |
0.05 |
0.05 |
0.05 |
0.03 |
|
O |
% |
<2.5 |
<2.5 |
<2.5 |
<2.5 |
<0.9 |
<0.9 |
<0.8 |
|
D50 |
um |
110 |
80 |
50 |
30 |
8.0 |
3.0 |
0.5 |
|
Apparent Density |
g/cm3 |
2.0 |
1.8 |
1.7 |
1.6 |
0.7 |
0.4 |
/ |
- SiC Powder
Our micro-grade SiC powders can be used in coating, locomotive fields with good fluidity, reasonable particle size distribution and high packing density.
|
Item |
Unit |
SC-995-100 |
SC-995-50 |
SC-994-15 |
SC-993-8 |
SC-99-0.8 |
|
SiC |
% |
>99.5 |
>99.5 |
>99.4 |
>99.3 |
>99 |
|
Fe2O3 |
% |
<0.01 |
<0.06 |
<0.03 |
<0.03 |
<0.01 |
|
SiO2 |
% |
<0.11 |
<0.08 |
<0.1 |
<0.11 |
<0.18 |
|
Water |
% |
<0.01 |
<0.01 |
<0.02 |
<0.02 |
<0.02 |
|
D50 |
um |
100 |
50 |
15 |
8 |
0.8 |
- SiO2 Powder
The Silica dioxide is produced by tetrachlorosilane and hydrogen as raw materials and then undergo preheating, high-temperature hydrolysis, cooling, aggregation, separation to obtain silicon oxide.
|
Item |
Unit |
SO-99-3 |
SO-99-9 |
SO-99-19 |
SO-99-50 |
|
SiO2 |
% |
>99 |
>99 |
>99 |
>99 |
|
D50 |
um |
2-4 |
7-11 |
17-21 |
40-60 |
- Si3N4 Powder
High quality sub-micron grade silicon nitride powders are widely used for manufacturing of special ceramic such as high thermal conductivity and high strength substrates.
|
Item |
Unit |
SN-90-0.5 |
SN-93-0.8 |
SN-95-7 |
|
Si3N4 |
% |
>90 |
>93 |
>95 |
|
O |
% |
<1.6 |
<1.0 |
<1.5 |
|
Fe |
ppm |
<200 |
<100 |
<50 |
|
Ca |
ppm |
<100 |
<100 |
<60 |
|
Al |
ppm |
<200 |
<270 |
<25 |
|
D50 |
um |
0.5 |
0.8 |
7 |
- Cr2O3 Powder
Cr2O3 powders can be applied in coating spray with high hardness, wear resistance and corrosion resistance for large rollers in the paper industry and guide wire discs in textile industry and shaft sleeves in mechanical engineering areas.
|
Item |
Unit |
MO-C-1038 |
MO-C-1545 |
MO-C-1553 |
|
Cr2O3 |
% |
>99.5 |
>99.5 |
>99.5 |
|
CaO |
% |
<0.1 |
<0.1 |
<0.1 |
|
SiO2 |
% |
<0.1 |
<0.1 |
<0.1 |
|
MgO |
% |
<0.1 |
<0.1 |
<0.1 |
|
Fe2O3 |
% |
<0.05 |
<0.05 |
<0.05 |
|
PSD |
um |
10-38 |
15-45 |
15-53 |
|
Apparent Density |
g/cm3 |
>2.5 |
>2.5 |
>2.5 |
Customized thermal spraying ceramic powders can be produced, for example, Cr2O3-5SiO2-3TiO2, Al2O3-40TiO2-7SiO2, 92ZrO2-8Y2O3 etc.
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