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首页> 外文会议>International Conference on Aluminum Alloys >THE POTENTIAL OF THE COLD SPRAY PROCESS FOR THE REPAIR AND MANUFACTURE OF ALUMINIUM ALLOY PARTS
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THE POTENTIAL OF THE COLD SPRAY PROCESS FOR THE REPAIR AND MANUFACTURE OF ALUMINIUM ALLOY PARTS

机译：冷喷涂工艺的潜力为铝合金零件的修复和制造

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摘要

Being capable of producing deposits up to several centimeters thick, the cold spray process is emerging as an attractive technology for the manufacture and repair of high value aluminium and magnesium components. During the cold spray process fine aluminium or aluminium alloy powders are propelled at high velocities in the solid state at the target substrate. Due to the high velocity particle impacts, strong bonds are formed between the coating and the substrate and between particles within the deposited layer. Metallographic sections of cold sprayed coatings reveal microstructures characterised by very low porosity. With the objective of improving the abrasive wear and erosion resistance of cold sprayed coatings, ceramic reinforcements such as SiC, B_4C and Al_2O_3 have been introduced in the feedstock to produce composite coatings, and these composite materials have been deposited with thicknesses in excess of 25 mm. Several applications employing commercially available equipment have achieved industrialisation.
机译：冷喷涂工艺能够生产高达几厘米的沉积物，作为制造和修复高价值铝和镁成分的有吸引力的技术。在冷喷涂过程中，精细的铝或铝合金粉末在靶衬底的固态中的高速下推进。由于高速粒子撞击，在涂层和基板之间以及沉积层内的颗粒之间形成强键。冷喷涂涂层的金相截面揭示了具有非常低孔隙率的微观结构。随着改善冷喷涂涂层的磨料磨损和腐蚀性的目的，在原料中引入了陶瓷增强剂，例如SiC，B_4C和Al_2O_3以产生复合涂层，并且这些复合材料已经沉积超过25mm的厚度。采用市售设备的几种应用已经实现了工业化。

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