Thermal analysis of the phases of HMX using X-ray diffraction

Zeitschrift fur Kristallographie - Crystalline Materials - Tập 204 Số 1 - Trang 121-128 - 1993
M. Herrmann, W. Engel, N. Eisenreich

Tóm tắt

Abstract The 4 phases of HMX and its transitions were investigated using X-ray diffraction. The phases were heated stepwise in a temperature range from 170 K to 510 K, measuring a diffraction pattern after each step. The thermal expansion of the different phases and the volume changes during the phase transitions were obtained. Anomalies and strongly anisotropic expansions were observed with β- and γ-HMX. The highest thermal expansion was found with γ-HMX, followed by δ-, β- and α-HMX. The highest volume change was observed with the β → δ transition, followed by the α → δ and the γ → δ transition.

Từ khóa


Tài liệu tham khảo

10.1139/v62-353

10.1107/S0365110X63001651

Choi C. S., 1970, Acta Crystallogr., 26, 1235, 10.1107/S0567740870003941

Cobbledick R. E., 1974, Acta Crystallogr., 30, 1918, 10.1107/S056774087400611X

10.1016/0040-6031(89)85295-5

McCrone W. C., 1950, HMX. Anal. Chem., 22, 1226

Singh B., 1981, Techn., 19, 296

Thông tin
Thông tin xuất bản

Zeitschrift fur Kristallographie - Crystalline Materials

Tập 204 Số 1

121-128

Thông tin tác giả