3213 results about "Alloy surface" patented technology

Methods of preparing a clean surface of germanium tin or silicon germanium tin layers for subsequent deposition are provided. An overlayer of Ge, doped Ge, another GeSn or SiGeSn layer, a doped GeSn or SiGeSn layer, an insulator, or a metal can be deposited on a prepared GeSn or SiGeSn layer by positioning a substrate with an exposed germanium tin or silicon germanium tin layer in a processing chamber, heating the processing chamber and flowing a halide gas into the processing chamber to etch the surface of the substrate using either thermal or plasma assisted etching followed by depositing an overlayer on the substantially oxide free and contaminant free surface. Methods can also include the placement and etching of a sacrificial layer, a thermal clean using rapid thermal annealing, or a process in a plasma of nitrogen trifluoride and ammonia gas.

As a rawmaterial of a copper base alloy containing at least one of 0.2 to 12 wt% of tin and 8 to 45 wt% of zinc, at least one of a copper base alloy having a large surface area and containing carbon on the surface thereof, a copper base alloy having a liquidus line temperature of 1050 DEG C or less, a copper base alloy surface-treated with tin, and a copper base alloy containing 20 to 1000 ppm of carbon, is used for obtaining a copper base alloy having an excellent hot workability. If necessary, when the raw material of the copper base alloy is melted, the material of the copper base alloy may be coated with a solid material containing 70 wt% or more of carbon, or 0.005 to 0.5 wt% of a solid deoxidizer having a stronger affinity with O than C with respect to the weight of the molten metal may be added to the molten metal.

The invention relates to method for processing the anode of an aluminum or aluminum alloy surface, comprising the following steps: providing an aluminum or aluminum alloy base body which comprises aninner surface and an outer surface opposite to the inner surface; carrying out first machining processing on the outer surface of the aluminum or aluminum alloy base body so that the outer surface hasfirst machining surface effect; carrying out first-time anode processing on the aluminum or aluminum alloy base body so that the surface of the aluminum or aluminum alloy base body forms an oxidationfilm with a first color; removing a part or all of the oxidation film formed on the inner surface of the aluminum or aluminum alloy base body so that the aluminum or aluminum alloy base body is conductive; carrying out second machining processing on the outer surface of the aluminum or aluminum alloy base body; removing a part of the oxidation film positioned on the outer surface and enabling anarea the oxidation film of which is removed to have second machining surface effect; and carrying out second-time anode processing for the aluminum or aluminum alloy base body so that the area which has the second machining surface effect forms an oxidation film with a second color. The method can obtain different surface effects on a same base body.