Enhanced reactivity of Ni-Al reactive material formed by cold spraying combined with cold-pack rolling
Enhanced reactivity of Ni-Al reactive material formed by cold spraying combined with cold-pack rolling
复制标题
冷喷结合冷包轧制镍铝反应材料增强反应活性
DOI：
10.1016/j.jallcom.2018.01.170
复制
发表时间：
2018-04
影响因子：
6.2
通讯作者：
Cui Yan
中科院分区：
文献类型：
--
作者：
Zhao Huilin;Tan Chengwen;Yu Xiaodong;Ning Xianjin;Nie Zhihua;Cai Hongnian;Wang Fuchi;Cui Yan
通过冷喷涂获得了近全致密(孔隙率<；1%)的Ni-Al反应块体材料，并通过随后的逐步冷轧成功地实现了大变形无裂纹，最大总减薄率可达95%。研究了冷轧工艺对冷喷涂Ni-Al反应材料反应性的影响。通过差示扫描量热仪测量热爆模式下的固相反应阈值温度和高速相机测量自传播模式下的燃烧波速来表征材料的反应性。对于轧制处理的冷喷涂材料，在差示扫描量热法实验中，固相扩散反应的起始温度向较低温度移动了30~40 °C。冷轧处理后的冷喷涂样品的燃烧反应活性明显提高。经15道次轧制后，材料的燃烧波速可达130~140mo1 mm/ ，燃烧反应速度与单位体积接触面积(Sv)的统计结果呈线性关系，并提出了活化能为129molkJ/ 的关系式。
Near-fully-dense (porosity<1%) Ni-Al reactive bulk materials were obtained by cold spraying and large deformation without crack was successfully achieved by the subsequent gradual cold-pack rolling, and the largest total thickness reduction could reach 95%. The influences of cold-pack rolling on the reactivity of the cold-sprayed Ni-Al reactive materials were investigated. The material reactivity was addressed through the solid-state reaction threshold temperature in thermal explosion mode conducted by differential scanning calorimetry and combustion wave velocity in self-propagating mode measured by a high-speed camera. For the cold-sprayed materials with rolling treatment, the onset of solid diffusion reaction shifted to a lower temperature range by 30–40 °C in the DSC experiment. An obvious increase in the combustion reaction reactivity of the cold-sprayed samples after treatment with cold-pack rolling was demonstrated. The combustion wave velocities for the materials with fifteen gradual rolling passes could reach 130–140 mm/s. The combustion reaction velocity showed a linear dependence on the statistic results of contact area per unit volume (Sv) between Ni and Al reactants and an expression was proposed, giving an activation energy of 129 kJ/mol.
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DOI：
10.1016/s0007-8506(07)62445-7
发表时间：
1993
期刊：
CIRP Annals
影响因子：
--
作者：
J. Gunasekera;A. F. Ali;R. Anbajagane;Lohitha Dewasurendra
通讯作者：
J. Gunasekera;A. F. Ali;R. Anbajagane;Lohitha Dewasurendra
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DOI：
10.1016/j.msea.2013.07.011
发表时间：
2013-11
期刊：
Materials Science&Engineering, A
影响因子：
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作者：
L.Gao;J.Wang;Z.Y.Zhang;J.Dong
通讯作者：
J.Dong
影响因子：
3.5
作者：
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通讯作者：
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影响因子：
3.2
作者：
Fritz, Gregory M.;Spey, Stephen J., Jr.;Weihs, Timothy P.
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影响因子：
4.4
作者：
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Weihs, Timothy P.