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首页> 外文会议>Pacific Rim International Conference on Advanced Materials and Processing >Processing and Microstructures of Tungsten/Copper Composites Produced by Plasma Spray and Cold Spray
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Processing and Microstructures of Tungsten/Copper Composites Produced by Plasma Spray and Cold Spray

机译：等离子喷雾和冷喷涂生产的钨/铜复合材料的加工和微观结构

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Tungsten/copper composites were produced using an agglomerated feedstock powder by plasma spray and cold spray. In the case of the plasma spray, the external feedstock injection (EFI) and the internal feedstock injection (IFI) were adopted to compare oxidation, microstracture, porosity, and tungsten recovery in the deposits. The IFI deposit had less oxidation, denser microstracture, and more tungsten retention compared to the EFI. Especially, more tungsten particles were melted from the IFI than from the EFI at input power of 25kW. Thermal expansion coefficient of plasma sprayed composite (72W/28Cu vol. percent) was approximately 5.2X10~(-6)/K. In the cold spray, no oxidation and more dense micro structures were observed with porosity of less than 1.0 vol. percent. However lots of tungsten was lost due to insufficient plastic deformation.
机译：通过等离子体喷雾和冷喷涂制备钨/铜复合材料。 在等离子体喷雾的情况下，采用外部原料喷射（EFI）和内部原料喷射（IFI）进行比较沉积物中的氧化，微扰，孔隙率和钨回收。 与EFI相比，IFI沉积物具有较少的氧化，更密集的微传导和钨潴留。 特别地，更多的钨颗粒从IFI熔化而不是EFI以25kW的输入功率。 等离子体喷涂复合材料的热膨胀系数（72W / 28CU Vol.％）约为5.2×10〜（-6）/ k。 在冷喷雾中，没有孔隙率观察到孔隙率小于1.0体积的氧化和更致密的微结构。 百分。 然而，由于塑性变形不足，许多钨丢失。

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