Study on the phase diagram of the Ti-B-N system and the interfacial reaction of the Ti/BN joints
Study on the phase diagram of the Ti-B-N system and the interfacial reaction of the Ti/BN joints
复制标题
DOI：
10.1016/j.msea.2004.10.018
复制
发表时间：
2005-02
期刊：
影响因子：
6.4
通讯作者：
Xiaoyan Ma;Changrong Li;Weijing Zhang
中科院分区：
文献类型：
--
作者：
Xiaoyan Ma;Changrong Li;Weijing Zhang
Ti-B-N 体系在不同温度 1273K、1673K 和 1893K 的等温剖面是通过延伸相关的二元系统 Ti-B、B-N 和 Ti-N 来构建的。计算出的相图很好地再现了最新的实验结果。在相平衡计算的基础上，在1273K温度下，在两个不同扩散对的报道实验条件下，对两对扩散对Ti/BN之间的界面反应和相序进行了理论分析，BN板浸入松散的Ti粉末中，BN颗粒嵌入致密的Ti基体中。获得了这两种Ti/BN接头的不同相形成序列和表观空间相序列。证明了相形成序列和表观空间相序列的不同相序均受扩散偶中两对相的相对数量和分布的支配。
The isothermal sections of the Ti–B–N system at different temperatures 1273K, 1673K and 1893K were constructed by extending the related binaries, Ti–B, B–N and Ti–N. The calculated phase diagrams reproduce the latest experimental results well. On the basis of the phase equilibrium calculation, the interfacial reactions and the phase sequences between the two pairs of the diffusion couples, Ti/BN, were analyzed theoretically under the reported experimental conditions of two different couples, the BN plates immersed into a loose Ti powder and the BN particles embedded into a dense Ti matrix at 1273K. Different phase formation sequences and apparent spatial phase sequences for those two kinds of Ti/BN joints were obtained. It was proved that the different phase sequences of both the phase formation sequences and the apparent spatial phase sequences were dominated by the relative amounts and distribution of the two pairs in the diffusion couples.