Sol-Gel Autocombustion Synthesis of Metals and Metal Alloys

摘要

The development of technology for the synthesis of metals and alloys continues to be one of the most important challenges in materials science. A general method for the synthesis of metals is to reduce metal oxides with hydrogen or carbon at high temperature. Pure metals are then used as starting materials to synthesize alloys by a melting method. There are some existing methods used to synthesize metals and alloys that have improvement of their capabilities. However, the reduction of energy costs in the synthesis process is one of the critical factors for making the overall products cost-effective. Autocombustion is a self-sustaining method for heat generation from its own exothermic reac-tion. In addition, the sol-gel technique has been widely used for the synthesis of a variety of metal oxides by mixing of different elements at the atomic level.