Bone Sintering  
   
 

 

Bonemeal was fired in the kiln at a high temperature to determine if it could be fused. This could allow for bone housings to be molded, or even formed, using a CNC laser.

 
     
   
     
 
Moulds were filled with sterilized bone meal, capped, and then placed in the kiln under pressure.
 
     
   
     
 
The bone was fired at 50% for 40 minutes. A fault with the pyrometer meant it was not possible to get an accurate temperature reading. The final sample was fused, yet charred and brittle. However it may be possible to glaze the material.
 
 
 
 
Further research is to be conducted with bone china, which contains 50% bone ash, into its suitability as a heavy metals barrier. If successful, bone china would be an ideal way to use bone in larger applications.
 
     
  Bone Sintering II  
   
     
  Once a working pyrometer was obtained, a second set of tests were performed.  
     
  200 Degrees Celsius  
   
     
 
The first sample was raised within the kiln and left uncovered, for easy removal. The time and temperature of the kiln was documented at regular intervals. When the kiln had reached a temperature of around 200 *C the sample was removed. Unfortunately the bone had not fully sintered.
 
     
 
Time (hrs.min)
Temperature (*C)
Kiln Setting
0.05
21
10
0.10
39
10
0.15
53
10
0.20
70
10
0.25
94
20
0.30
120
20
0.35
143
20
0.40
166
20
0.45
186
20
0.55
205
20
 
     
     
  330 Degrees Celsius  
   
     
 
The second test sample consisted of bone meal, with a 1cm layer of pure ground bone on top. The sample was placed under pressure and removed at around 330*C. The bone had fused, however it was extremely charred and weak.
 
     
 
Time (hrs.min)
Temperature (*C)
Kiln Setting
0.05
94
20
0.10
-
20
0.15
-
20
0.20
-
20
0.25
152
20
0.30
-
20
0.35
185
20
0.40
203
20
0.45
228
20
0.55
-
20
1.00
-
20
1.05
298
40
1.10
328
40
 
     
     
 
Copyright Andrew Ross 2008