Effect of nickel addition on the exothermic reaction of titanium and boron carbide
Effect of nickel addition on the exothermic reaction of titanium and boron carbide
复制标题
镍的添加对钛与碳化硼放热反应的影响
DOI：
10.1557/jmr.2007.0010
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发表时间：
2007-01-01
影响因子：
2.7
通讯作者：
Jiang, Q. C.
中科院分区：
文献类型：
--
作者：
Yang, Y. F.;Wang, H. Y.;Jiang, Q. C.
Ni-Ti-B_4C体系在差热分析仪中的放热反应路径为：Ni先与B_4C反应生成Ni-B化合物，然后与Ti反应生成Ti_2Ni;随后，Ni_2B和Ni_4B_3之间形成Ni-B共晶液相，Ti_2Ni和Ti之间形成Ni-Ti共晶液相，这使得Ni、B、C和Ti在溶液中的扩散在低温下更容易和更快地形成Ni-Ti-B-C液体;最终，TiC和TiB 2从液体中析出。Ni的加入为反应物的传质提供了一条更容易的途径，促进了完全反应的发生。
Exothermic reaction path of the Ni-Ti-B4C system in the differential thermal analysis apparatus proceeded in such a way that Ni initially reacted with B4C and Ti to form Ni-B compounds and Ti2Ni with heat release, respectively; subsequently, the formation of Ni-B eutectic liquid between Ni2B and Ni4B3, and the appearance of Ni-Ti eutectic liquid phase between Ti2Ni and Ti were followed, which enabled the diffusion of Ni, B, C, and Ti in solution to form Ni-Ti-B-C liquid more easily and quickly at a low temperature; finally, TiC and TiB2 were precipitated out of the liquid. The addition of Ni provided an easier route for reactant mass transfer and accelerated the occurrence of complete reaction.