【摘要】：為確定燒結溫度、材料配比及粒徑對鋁-特氟龍(Al-Teflon)準靜壓反應現象的影響,利用萬能實驗機對Al-Teflon進行了準靜態(tài)壓縮試驗。得到了燒結溫度、配比及粒徑影響下試件的應力應變曲線及反應率數據。利用掃描電子顯微鏡(SEM)進行了微觀形貌分析。結果表明,燒結溫度、材料配比及粒徑均影響材料的力學特性,改變了材料的形變及裂紋形成模式,進而影響準靜壓起始反應的激發(fā);同時,材料配比影響反應完全度,當材料配比偏離化學平衡配比時,出現不完全反應現象;而隨粒徑減小,反應烈度及反應速率增加。Al-Teflon能夠發(fā)生準靜壓反應的材料-工藝范圍為:燒結溫度320~370℃,Al質量分數16%~36%,Al粉粒徑小于12~14μm。
[Abstract]:In order to determine the effects of sintering temperature, material ratio and particle size on the quasi-static pressure reaction of Al-terfluron (Al-Teflon), quasi-static compression tests of Al-Teflon were carried out with a universal experimental machine. The stress-strain curve and reaction rate data were obtained under the influence of sintering temperature, ratio and particle size. Scanning electron microscopy (SEM) (SEM) was used to analyze the micromorphology. The results show that the sintering temperature, material ratio and particle size all affect the mechanical properties of the material, change the deformation and crack formation mode of the material, and then affect the excitation of quasi-static pressure initiation reaction. At the same time, the ratio of materials affects the degree of complete reaction, when the ratio of materials deviates from the chemical equilibrium ratio, the phenomenon of incomplete reaction occurs. However, with the decrease of particle size, the reaction intensity and reaction rate increase. The material-process range of quasi-static pressure reaction for Al-Teflon is as follows: sintering temperature 320 ~ 370 鈩，

本文編號：2382980