## 3 Results and Discussion
### Combustion Performances  
#### 3.4.1 Constant Volume Combustion Test  
The energy output potential of an energetic material is usually evaluated by the energy release rate and gross energy output. And the corresponding characteristic will be a key criterion for the further application of an energetic material. The constant volume  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Exothermic Peak** & **Heating Rates (K-min\({}^{-1}\))** & \(E_{a}\) (J-mol\({}^{-1}\)) & **Ig(A(s\({}^{-1}\)))** & **R** & **The Most Possible Functions** & **Kinetic Equation** \\ \hline \multirow{6}{*}{I} & 5 & 115.2093 & 28.22489 & 0.993668 & \multirow{6}{*}{\(\frac{\mathrm{d}a}{\mathrm{d}t}=10^{14.3657}\times\frac{4}{1-\alpha}[\ln(1- \alpha)]^{3}\)} & \multirow{6}{*}{\(\frac{\mathrm{d}a}{\mathrm{d}t}=\frac{\mathrm{d}a}{\mathrm{d}t}\)} \\  & 10 & 122.7675 & 29.61636 & 0.995394 & & \\  & 15 & 131.1940 & 31.06599 & 0.991795 & & \\  & 20 & 124.2758 & 28.99306 & 0.981353 & & \\  & 25 & 106.2708 & 23.59166 & 0.965036 & & \\  & 5 & 260.0079 & 24.86317 & 0.988413 & & \\  & 10 & 189.9453 & 17.52124 & 0.980036 & & \\ II & 15 & 237.9435 & 22.75562 & 0.986147 & \(\frac{2}{3}[\left(1-\alpha\right)^{-1/3}-1]^{2}\) & \(10^{17.4839}\times\frac{2}{3}[\left(1-\alpha\right)^{-1/3}-1]\) \\  & 20 & 305.7663 & 29.66858 & 0.976977 & & \\  & 25 & 294.6532 & 27.91423 & 0.985651 & & \\ \hline \hline \end{tabular}
\end{table}
Table 2: The kinetic mechanisms and parameters of exothermic reactions of Al/MoO\({}_{3}\)-E.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Sample**} & \multicolumn{2}{c}{**Impact Sensitivity**} & \multicolumn{2}{c}{**Flame Sensitivity**} \\ \cline{2-5}  & \(H_{\text{50}}\)/cm & **Standard Deviation/cm** & \(H_{\text{50}}\)/cm & **Standard Deviation/cm** \\ \hline Al/MoO\({}_{3}\)-M & 35 & 1 & 50 & 2 \\ Al/MoO\({}_{3}\)-E & 23 & 1 & 42 & 2 \\ \hline \hline \end{tabular}
\end{table}
Table 3: The impact and flame sensitivities of Al/MoO\({}_{3}\)-M and Al/MoO\({}_{3}\)-E.  
combustion test is a measurement of combustion performance in a constant-volume vessel, which is a good way to analyze the energy release rate and gross energy output. Under this condition, the reaction energy is immediately released within a very short time in a confined space. In a typical test, the pressure change along the combustion process is recorded. Therefore, the pressurizing rate and the area below the curve separately indicates the reaction rate and the total work capacity. In this work, the test was conducted under atmospheric pressure and results are listed in Table 4. The maximum pressure of Al/MoO\({}_{3}\)-E was 1.96 MPa, which was 0.69 MPa higher than that of the mechanically mixed counterpart. And typical _P_-t curves and the mean maximum pressures for the samples are displayed in Figure 7. Figure 7 indicates that the pressurization rate and the maximum pressure of Al/MoO\({}_{3}\)-E are higher than those of the Al/MoO\({}_{3}\)-M. This proves the fact that reaction rate of Al/MoO\({}_{3}\)-E particles is larger than that of Al/MoO\({}_{3}\)-M particles due to a much more intimate connection. Furthermore, the area below the curve of Al/MoO\({}_{3}\)-E, which corresponded to the pressure-time integral, was evidently much bigger than that of Al/MoO\({}_{3}\)-M, indicating a better work capacity of Al/MoO\({}_{3}\)-E particles.