Abstract
2-bromo-3,3,3 trifluoropropene (2-BTP), as a substitute for halon fire extinguishing agent, is clean, environmentally friendly and low-toxicity. However, the potential corrosiveness increases the insecurity in 2-BTP applications. Therefore, the corrosion behavior of the agent to typical magnesium alloy material AZ80A was studied at different temperatures. On this basis, corrosion products and gaseous products were analyzed, and the corrosion mechanism of 2-BTP on AZ80A at 400 °C was explained. The result shows that the pyrolysis of 2-BTP produces C3∼C5 products and HF, which corrode AZ80A to produce MgF2, increasing the coupon mass and reducing the ultimate tensile strength. However, the corrosion product layer adheres tightly to the alloy surface and increases the corrosion resistance. Meanwhile, the substance increases the efficiency of the agent pyrolysis. The performance assessment of the 2-BTP was refined by this work.
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