泡沫铝的制备方法及应用进展

概述了泡沫铝的各种制备方法研究进展。根据制备过程中铝的状态可以将制备方法分为三类：固相法、液相法、电沉积法。液态铝能够通过直接注入气体、加入发泡剂或生成过饱和固一气共晶体的方法制得泡沫铝，间接方法包括熔模铸造法和渗流铸造法。如果往铝粉末压块中加入发泡剂，通过加热使发泡剂分解同样能得到泡沫铝。类似的方法还包括粉浆烧结法、散粉烧结法等。最后描述了泡沫铝的结构和优良性能，并对泡沫铝在各领域的应用进行了概括和展望。

Preparation and Application Progression of Aluminum Foams

The methods for manufacturing aluminum foams are reviewed.According to the aluminum state the various preparation processes are classified as solid,liquid,ionized.Liquid aluminum can be foamed directly by injecting gas or gas-releasing blowing agents,or by producing supersaturated metal-gas solutions.Indirect methods include investment casting,the use of space-holding filler materials.If blowing agents is added in powder compacts,a subsequent heat treatment can produce cellular aluminum in the solid state.The same holds for various sintering methods,aluminum powder slurry foaming,or sintering of polymer/powder mixtures.Finally,the various application fields for aluminum foams were discussed.