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Nanostructured Component Fabrication by Electron Beam-Physical Vapor Deposition

机译：电子束物理气相沉积法制备纳米结构零件

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Fabrication of cost-effective, nano-grained net-shaped components has brought considerable interest to Department of Defense, National Aeronautics and Space Administration, and Department of Energy. The objective of this paper is to demonstrate the versatility of electron beam-physical vapor deposition (EB-PVD) technology in engineering new nanostructured materials with controlled microstructure and micro-chemistry in the form of coatings and net-shaped components for many applications including the space, turbine, optical, biomedical, and auto industries. Coatings are often applied on components to extend their performance and life under severe environmental conditions including thermal, corrosion, wear, and oxidation. Performance and properties of the coatings depend upon their composition, microstructure, and deposition condition. Simultaneous co-evaporation of multiple ingots of different compositions in the high energy EB-PVD chamber has brought considerable interest in the architecture of functional graded coatings, nano-laminated coatings, and design of new structural materials that could not be produced economically by conventional methods. In addition, high evaporation and condensate rates allowed fabricating precision net-shaped components with nanograined microstructure for various applications. Using EB-PVD, nano-grained rhenium (Re) coatings and net-shaped components with tailored microstructure and properties were fabricated in the form of tubes, plates, and Re-coated spherical graphite cores. This paper will also present the results of various metallic and ceramic coatings including chromium, titanium carbide (TiC), titanium diboride (TiB_2), hafnium nitride (HfN), titanium-boron-carbonitride (TiBCN), and partially yttria stabilized zirconia (YSZ) TBC coatings deposited by EB-PVD for various applications.
机译：具有成本效益的纳米颗粒状网状部件的制造引起了国防部，美国国家航空航天局和能源部的极大兴趣。本文的目的是演示电子束物理气相沉积（EB-PVD）技术在工程化具有控制的微结构和微化学形式的新型纳米结构材料中的多功能性，这些材料具有涂层和网状组件的形式，适用于许多应用，包括航天，涡轮，光学，生物医学和汽车工业。通常在组件上施加涂层以延长其在恶劣的环境条件下的性能和寿命，包括热，腐蚀，磨损和氧化。涂层的性能和性质取决于其组成，微观结构和沉积条件。同时在高能EB-PVD腔室中同时蒸发不同成分的多个铸锭，引起了人们对功能梯度涂层，纳米层状涂层的体系结构以及无法通过常规方法经济地生产的新型结构材料的设计的极大兴趣。另外，高的蒸发和冷凝速率允许制造具有各种用途的具有纳米粒度微结构的精密网状部件。使用EB-PVD，以管，板和Re-coated球形石墨核的形式制造了具有特定微结构和性能的纳米级in（Re）涂层和网状组件。本文还将介绍各种金属和陶瓷涂层的结果，包括铬，碳化钛（TiC），二硼化钛（TiB_2），氮化ha（HfN），钛硼碳氮化物（TiBCN）和部分氧化钇稳定的氧化锆（YSZ ）EB-PVD沉积的TBC涂料，可用于各种应用。

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