Tailoring Aerogel for Thermal Spray Applications in Aero-Engines: A Screening Study
Table 3
Significant effect of each independent variable on the spray-dried powder characteristics.
Responses
Spray-drying variables
Powder content (vol.%)
YSZ : aerogel
Dispersant (wt.%)
Binder (wt.%)
Inlet temperature (°C)
Atomization pressure (bar)
Feeding rate (ml/min)
Median particle size
value
0.035
0.048
0.424
0.113
0.063
0.289
>0.9
F-ratio
27.87
19.71
1.36
7.84
14.81
2.46
—
Volume fraction
value
0.010
0.019
0.124
0.056
0.025
0.237
>0.9
F-ratio
100.44
50.44
7.09
16.74
38.46
3.22
—
Uniformity
value
0.065
0.219
0.248
0.770
0.208
0.269
>0.9
F-ratio
14.59
3.57
3.04
0.30
3.82
2.71
—
Values are generated by Minitab®. Significance indicators are derived from ANOVA. Higher F-ratio and lower value refer to more significance, and vice versa. Statistically significant results ().
