Spinel

Magnesium aluminate is the most common and well-known member of the Spinel series. The Curie temperature varies similarly with the sample composition in ceramics.

Magnesium Aluminate (Press-Ready Spinel Powder) Certificate of Analysis
ACT-3B
Milling
Spinel Slip Properties
Unit
Minimum
Maximum
Target
PSD        
D10
um
NA
1.00
0.50
D50
um
0.5
1.50
1.00
D90
um
1.5
4.50
2.00
Press Ready Powder
Spinel Powder Properties
Unit
Minimum
Maximum
Target
Density        
Bulk
g/cc
0.82
1.00
0.88
Tap
g/cc
0.90
1.05
0.95
Pressure to Achieve 2.00 g/cc
psi
N/A
25,000
17,000
Fired (2 hrs @ 1625°C)
g/cc
3.50
NA
3.55
PTCR Heat Work Temperature
°C
1675
 
 
PSD of Spray Dried Powder
 
 
 
 
D50 (Screen Analysis)
um
NA
200.00
<100
Flowability
 
 
 
 
Flow Rate (2.5 mm 25cc Hall Flowmeter)
g/sec
0.35
N/A
0.55
Purity by GDMS on Powder        
Soda          
ppm
-
7500
<500
Silica            
ppm
-
300
<150
Calcia              
ppm
-
200
<150
Iron Oxide
ppm
-
200
<150
Yttria
ppm
-
100
<50
Zirconia
ppm
-
2000
<500
Others
ppm
-
<200
<100
Moisture Content
 
 
 
 
Residual Moisture (120°C for 10 minutes)
wt%
0
1
0.1
Loss on Ignition
 
 
 
 
Weight loss at 1625°C
wt%
7.0
8.0
7.5
Shrinkage (1.5" disk)
% OD
18.5
20
19
Fired (2 hrs @ 1625°C)
% Height
18.5
20
19
Phase Composition
 
 
 
 
XRD (Pure Spinel + > 2% MgO)
pass/fail
> 2%
2.40%
>2

Need a RFQ? Fill out the form to get started!

Texas Technical Ceramics, Inc. (TTC) has a longstanding commitment to our clients, which includes our ability to incorporate traditional business values with innovative advancements in manufacturing.

...more about TTC