Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Seltenerddauermagneten, insbesondere Hochenergie-Seltenerddauermagneten, mit den Schritten - Erzeugen (S1) eines leichte seltene Erden aufweisenden Dauermagnet-Grundkörpers; - Elektrochemisches Abscheiden (S2) eines schweren seltenen Erdmaterials, insbesondere Terbium Tb, auf diesen Dauermagnet-Grundkörper; - Anwenden eines Korngrenzen-Diffusions-Prozesses (S3) auf den mit dem schweren seltenen Erdmaterial beschichtete Dauermagnet-Grundkörper; und einen entsprechend hergestellten Seltenerddauermagneten.
Abstract:
A selected electrolyte composition comprising aluminum and a lower molecular weight fluorinated organic anion which can be an ionic liquid. The fluorinated organic anion can be bis(trifluorosulfonyl)imide. The composition can be used in electroplating or batteries. A preferred example is use of Al(NTf 2 ) 3 with one or more other moieties. A moisture insensitive electroplating method comprising: providing at least one aluminum electroplating system comprising at least one electroplating composition which is adapted for electroplating aluminum onto a substrate; electroplating aluminum onto the substrate from the at least one electroplating composition comprising: (i) aluminum cation, and (ii) at least one anion which is a fluorinated organic anion having molecular weight of 750 g/mol or less. Optionally, the aluminum cation is in, or is not in, aluminate form. Use of highly reactive aluminum compounds such as aluminum halides can be avoided.
Abstract:
Examples of next-generation ionic liquids (IL)s have been synthesized and characterized to be used in a variety of applications including aluminum electrodeposition. These ILs are non-flammable and provide smooth deposition of metal, such as metallic aluminum, onto an iron wire substrate. The newly synthesized ILs have been specifically designed for improved surface-interacting groups for smoother aluminum deposition properties. The substituent groups contain oxy-units which act as a viscosity reducer while also stabilizing the anion such as the AlCl 4 - anion. This improvement is important in forming high quality and/or defect-free coatings on different substrates, and the electroplating results obtained by this method are demonstrated to be superior over other commercially available IL processes.
Abstract:
A coating system for an aluminum component includes a substrate formed from an aluminum material, a zinc or zinc alloy sacrificial layer deposited on the substrate, and an aluminum coating deposited over the zinc or zinc alloy sacrificial layer.
Abstract:
An electrodeposited nickel-chromium-aluminum (Ni-Cr-Al) composite including nickel- chromium alloy and aluminum, and alloys or compounds formed by Al, Cr and Ni applied on turbine components comprises from 2 to 50 wt% chromium, from 0.1 to 6 wt% aluminum, and a remaining balance of nickel, wherein the Ni-Cr-Al composite is heat-treated to form an aluminum compound and to restore materials lost during repair processes of the turbine components.
Abstract:
A coated metal component includes an aluminum alloy substrate and a protective aluminum coating on a substrate. An interfacial boundary layer between the coating and substrate enhances coating adhesion. The boundary layer includes isolated regions of copper or tin produced by a double zincating process. The protective aluminum coating exhibits improved adhesion and is formed by electrodeposition in an ionic liquid.
Abstract:
An aluminum alloy component is protected by an electro deposited aluminum coating. An electrodeposited intermediate aluminum-transition metal alloy and/or rare earth metal alloy layer between the aluminum alloy substrate and the protective coating enhances coating adhesion and corrosion resistance. The intermediate layer is formed by room temperature electrodeposition in ionic liquids.