空气对流对HFC125/N2气氛下镁熔体表面膜的影响

Effect of Air Convection on Surface Film of Magnesium Alloy Melt under HFC125/N2 Atmosphere

摘要:

HFC125气体可以对高温镁合金提供有效的阻燃保护。研究了空气对流对HFC125/N2混合气体与镁合金熔体反应形成的表面膜的影响。结果表明：在弱空气对流条件下所得表面膜几乎没有氧原子，而在强空气对流条件下所得表面膜含有少量氧原子；两种工作环境下保护效果没有明显差别。

Abstract:

HFC125 gas is an effective ignition-proof protection to high temperature magnesium alloy melt. The surface films from the reaction between HFC125/N2 gas mixture and Mg alloy melt was studied under the weak or strong air convection condition. The results show that under the condition of weak air convection, almost no oxygen ion exists in the obtained surface film, while under the condition of strong air convection, the surface film contains a small amount of oxygen ion. The protection effect does not change obviously for the both working conditions.