论文部分内容阅读
研究了当燃烧波蔓延通过(Ti-2B-60wt%Cu)/(3Ti-2BN-x·Cu)(x=0、10、20、 40wt%)两层混合粉料时,稀释剂Cu含量和生坯压制压力p的变化对燃烧波形态和传播速度的 影响.经实验测定,当p=60MPa时;燃烧波在(3Ti-2BN)、(3Ti-2BN-10wt%Cu)、(3Ti-2BN- 20wt%Cu)、(Ti-2B-60wt%Cu)单层混合物中的传播速度分别为4.96mm/s、4.43mm/s、 2.17mm/s、 18.52mm/s,燃烧波不能蔓延通过(3Ti-2BN-40wt%Cu)单层混合物。对于(Ti- 2B-60wt%Cu)/(3Ti-2BN-x·Cu)层状混合物,从一端点火以后,燃烧波形态随(3Ti-2BN-x·Cu) 层金属含量的增加由弯向(3Ti-2BN-U·Cu)层的弧形改变为切向该层的楔形.此外,还研究了 生坯压制压力p=12、 24、 84、 108MPa时,不同生坯密度对燃烧波形态和传播速度的影响 规律.
When the combustion wave propagates through two layers of mixed powders (Ti-2B-60wt% Cu) / (3Ti-2BN-x · Cu) (x = 0,10,20 and 40wt%), the content of copper Effect of Variation of Green Compaction Pressure on the Morphology and Propagation Velocity of Combustion Wave. The experimental results show that when p = 60MPa, the single-layer structure of the combustion wave in (3Ti-2BN), (3Ti-2BN-10wt% Cu), (3Ti-2BN- 20wt% Cu) The propagation velocity in the mixture was 4.96 mm / s, 4.43 mm / s, 2.17 mm / s, and 18.52 mm / s respectively. The combustion wave could not propagate through the monolayer mixture (3Ti-2BN-40wt% Cu). For the (Ti-2B-60wt% Cu) / (3Ti-2BN-x-Cu) layered mixture, the shape of the combustion wave changes from bend to bend with the increase of metal content of (3Ti-2BN- (3Ti-2BN-U · Cu) layer arc changed to tangential to the wedge of the layer. In addition, the effect of different green density on the shape and propagation velocity of the combustion wave was also studied when the green compaction pressure p = 12,24,84,108 MPa.