固-气共晶定向凝固(Gasar工艺)是一种可制备出藕状或放射状规则多孔结构(Gasarite)的新颖工艺方法.在该工艺基础上,目前已衍生出热分解法、连续区熔技术和连续铸造技术.本文介绍了这些技术的主要研究进展,总结了固-气共晶凝固过程中气泡形核和固-气共生生长的理论研究结果以及Gasarite孔隙结构控制与优化的工艺措施,同时简要介绍了Gasarite的性能特点和应用前景.
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