How would a triaxial blend reveal changes which might lower the maturing temperature of a glaze?

Unit 3 Topic 10
Focus on Raw Materials

A triaxial blend should be used when changes to two or three materials is to be explored.

A triaxial blend would reveal the result of both increasing the feldspar and lowering the sources of amphoteric and acid oxides in the original glaze (clay & silica).

In this example blend the glazes between A and B represent an increase in feldspar only.

The glazes along the line from A to C have decreasing amounts of both clay and silica materials.

Between B and C the glazes move from maximum feldspar to minimum clay and silica.

 

The glazes #5, #8, & #9 (in the blue boxes on the chart) are samples in which the feldspar has been increased and the clay and silica decreased.

Recipe
A
#1
#2
#3
#4

#5
#6
#7
#8
#9
#10
B
#11
#12
#13
#14
C
#15
Feldspar
40
45
40
50
45
40
55
50
45
40
60
55
50
45
40
Whiting
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
China Clay
20
16.25
20
20
16.25
12.5

20

16.25
12.50
8.75
20
16.25
12.50
8.75
5
Silica
10
10
8.13
10
8.13
6.25
10
8.13
6.25
4.38
10
8.13
6.25
4.38
2.5

Note: when designing glazes B and C for this blend the recipes were not calculated to total 100 so that comparisons can be more easily made.

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