| Summary: | 碩士 === 國立中正大學 === 化學工程研究所 === 90 === This thesis divides into two parts. The first part is prepared the intermetallic materials by low-temperature combustion synthesis. The second part is for the low-temperature combustion mechanism studies. The studied system is to prepare iron-nickel intermetallic material by combustion synthesis between iron nitrate, nickel nitrate and carbohydrazide. The main goal is to study the influence on reaction behavior and product properties by process parameters such as reaction atmosphere, pressure and excess fuels, etc.
For the study on to prepare the intermetallic materials by low-temperature combustion synthesis. The reactants were reacted in inert atmosphere and after reaction the products were changed to section or part non-oxides intermetallic materials, like FeNi、FeCo、NiCo、Al0.13Co0.87、Zn0.08Ni0.92、FeAl or Ni0.864Al0.136. And used the particle analyzers like SEM, TEM, and BET to define the products which to conform to nanometer scale.
The results of mechanism studies and process parameters on to prepare the intermetallic materials by low-temperature combustion synthesis were summarized as followed. When combustion was performed in air, the main reaction was happened in gas phase, but in Argon atmosphere, the main reaction was happened in liquid phase. The fuel (carbohydrazide) also acted as reducing agent character. In process parameters results, the reactants reacted in Argon atmosphere, 5g carbohydrazide, 4atm high pressure condition and high reactant density could get much purity FeNi products but the particle size were getti
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