Aluminium foams for lighter vehicles
Aluminium foams for lighter vehicles
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DOI：
10.1504/ijvd.2005.006640
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发表时间：
2005-01-01
影响因子：
0.5
通讯作者：
Banhart, J
中科院分区：
文献类型：
--
作者：
Banhart, J
泡沫金属无论从科学观点还是从工业应用的前景来看，都是一个极具吸引力的研究领域。制备这种泡沫的各种方法是可用的。一些技术从特别准备的具有调节粘度的熔融金属开始。这样的熔体可以通过注入气体或通过添加释放气体的发泡剂而发泡，所述发泡剂原位分解，导致气泡的形成。另一种方法是从含有发泡剂的固体前体开始。这些可以通过将金属粉末与发泡剂混合，压实混合物，然后通过熔融使压实物发泡来制备。或者，可以使用浇铸路线来制造这样的前体。泡沫塑料的独特性能使其在车辆设计中有着广泛的应用，从轻质结构、冲击能量吸收到各种类型的声学阻尼和隔热。四个应用进行了讨论，包括起重臂上的卡车，汽车和火车碰撞盒，和电机支架。
Metallic foams have become an attractive research field both from the scientific viewpoint and the prospect of industrial applications. Various methods for making such foams are available. Some techniques start from specially prepared molten metals with adjusted viscosities. Such melts can be foamed by injecting gases or by adding gas-releasing blowing agents which decompose in-situ, causing the formation of bubbles. A further way is to start from solid precursors containing a blowing agent. These can be prepared by mixing metal powders with a blowing agent, compacting the mix and then foaming the compact by melting. Alternatively, casting routes can be used to make such precursors. The unique properties of foams promise a variety of applications in vehicle design ranging from light-weight construction, impact energy absorption to various types of acoustic damping and thermal insulation. Four applications are discussed, including a lifting arm on a lorry, an automobile and a train crash box, and a motor bracket.