Structure of metallic coatings for impurity control in macrotor
作者： L. Keller , L. Oren , R.J. Taylor , F. Schwirzke , R.F. Bunshah
DOI: 10.1016/0022-3115(82)90254-9
关键词: Hydrogen embrittlement 、 Deposition (phase transition) 、 Hydride 、 Metal 、 Getter 、 Adsorption 、 Materials science 、 Metallurgy 、 Impurity 、 Microstructure
摘要: Abstract The properties of atomic metal condensates are to a large extent determined by parameters such as: microstructure, temperature during deposition, interfacial phenomena, and deposit thickness. At elevated first wall temperatures (200–600°C), homogenous metallic film deposition can be achieved. For example, hydrogen embrittlement flaking through hydride formation, currently problem in fusion devices, avoided. thickness Ti-layers for acceptable impurity control must at least few hundred Angstroms because effective requires the physical covering adsorbents on surface. It is shown that thick coatings (micron range), which get formed repetitive Ti-“gettering” Macrotor, likely form stable wall, if properly deposited temperatures.
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