（TiO_2－Al－C）－（Ti－C－Ni）复合体系的自蔓燃热力学分析

Thermodynamic Analysis of SHS(TiO_2-Al-C)-(Ti-C-Ni)Composite System

研究了Ｔｉ－Ｃ－Ｎｉ系添加剂对（ＴｉＯ２－Ａｌ－Ｃ）－（Ｔｉ－Ｃ－Ｎｉ）复合体系化学反应热力学特性的影响。结果表明，单位质量热效应△Ｈ与Ｔｉ－Ｃ－Ｎｉ系在复合体系中所占质量比ｋ之间存在着严格的线性关系，其斜率仅由Ｎｉ在Ｔｉ－Ｃ－Ｎｉ系中所占质量比γ决定，而截距为一常数，等于ＴｉＯ２－Ａｌ－Ｃ单位质量热效应。当γ＜γ０＝４５．７９％时，Ｔｉ－Ｃ－Ｎｉ可提高其绝热燃烧温度。当γ＝０．１时，复合体系绝热燃烧温度基本上随添加量ｋ增加而呈线性增加。

The effect of reaction heat per unit mass △H0 and adiabatic combustion temperature Tad on the compositions of(TiO2-Al-C)-(Ti-C-Ni) system is studied.It is found that △H0 is a linear function of the fraction of Ti-C-Ni in (TiO2-Al-C)-(Ti-C-Ni). The slope is controlled by γ, which is the fraction of Ni in Ti-C-Ni, and the cut keeps constant, which is equal to the reaction heat per unit mass of TiO2-Al-C. When γ=γ0=45.79%, addition of Ti-C-Ni has no effect on Tad, when γ<γ0, Tad increases. For γ=0.1, Tad, approximately increases linearly with the increasing addition of Ti-C-Ni, which is verified by experiments.