Andrew H. Seltzman;James T. Ridzon;Stephen J. Wukitch
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引用次数: 0
Abstract
Laser powder bed fusion (L-PBF) of Glenn Research Copper 84 (GRCop-84) and Glenn Research Copper 42 (GRCop-42), Cr2Nb precipitation hardened alloys, produces a fully dense, high conductivity alloy. Cr2Nb precipitates impede free flow of liquid braze material across the surface of these alloys, similar to the observations of CuCrZr alloy brazing. This effect prevented effective vacuum brazing of additive manufactured GRCop waveguides into stainless steel waveguide flanges, where free flow into the waveguide-in-socket joint was required. The electroplating of copper and nickel alloys onto GRCop alloys showed enhanced wetting and free flow by covering surface precipitates. Braze wetting onto plated 304 and 316 stainless steels and active braze wetting on Inconel 625, tungsten, and TZM alloys used in flanges and limiters were evaluated.
激光粉末床熔合（L-PBF） Glenn Research Copper 84 （GRCop-84）和Glenn Research Copper 42 （GRCop-42）这两种Cr2Nb沉淀硬化合金，得到了致密、高导电性的合金。Cr2Nb的沉淀阻碍了液态钎焊材料在这些合金表面的自由流动，这与CuCrZr合金钎焊时的观察结果相似。这种影响阻碍了添加剂制造的GRCop波导在不锈钢波导法兰上进行有效的真空钎焊，因为在不锈钢波导法兰中需要自由流动。在GRCop合金表面电镀铜和镍合金，通过覆盖表面沉淀，增强了镀层的润湿性和自由流动。评估了用于法兰和限位器的镀304和316不锈钢的钎焊润湿性，以及用于法兰和限位器的因康耐尔625、钨和TZM合金的活性钎焊润湿性。
期刊介绍：
The scope covers all aspects of the theory and application of plasma science. It includes the following areas: magnetohydrodynamics; thermionics and plasma diodes; basic plasma phenomena; gaseous electronics; microwave/plasma interaction; electron, ion, and plasma sources; space plasmas; intense electron and ion beams; laser-plasma interactions; plasma diagnostics; plasma chemistry and processing; solid-state plasmas; plasma heating; plasma for controlled fusion research; high energy density plasmas; industrial/commercial applications of plasma physics; plasma waves and instabilities; and high power microwave and submillimeter wave generation.
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