Melt Protection of Mg-Al Based Alloys
Melt Protection of Mg-Al Based Alloys
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DOI：
10.3390/met6060131
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发表时间：
2016-05
期刊：
影响因子：
--
通讯作者：
M. Balart;J. Patel;Z. Fan
中科院分区：
文献类型：
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作者：
M. Balart;J. Patel;Z. Fan
本文报道了镁熔体保护的现状，以确定近期的挑战，但也有机会，镁铝基合金的镁熔体保护。我们的目标是设计和制造可持续的镁合金，以提高资源效率，回收利用和减少浪费。在除SF6之外的镁熔体保护替代覆盖气体技术中：含有HFC-134 a、氟化酮和稀SO2的市售技术和含有固体CO2、BF 3和SO2 F2的开发技术可能会产生有毒和/或腐蚀性副产品。另一方面，在镁及其合金中添加碱土金属氧化物在镁熔体保护领域具有很强的比较优势。Mg-Al基合金近期的挑战和机遇包括优化和使用CO2气体作为熔体保护和晶粒细化的原料，以及用于熔体保护的TiO 2添加剂。
This paper reports the current status of Mg melt protection in view to identify near-future challenges, but also opportunities, for Mg melt protection of Mg-Al based alloys. The goal is to design and manufacture sustainable Mg alloys for resource efficiency, recycling and minimising waste. Among alternative cover gas technologies for Mg melt protection other than SF6: commercially available technologies containing―HFC-134a, fluorinated ketone and dilute SO2―and developed technologies containing solid CO2, BF3 and SO2F2, can potentially produce toxic and/or corrosive by-products. On the other hand, additions of alkaline earth metal oxides to Mg and its alloys have developed a strong comparative advantage in the field of Mg melt protection. The near-future challenges and opportunities for Mg-Al based alloys include optimising and using CO2 gas as feedstock for both melt protection and grain refinement and TiO2 additions for melt protection.