摘要:
A method for treating the surface of an aluminum-based material so as to make the surface resistant to corrosion includes the steps of contacting the surface with an aqueous cerium non-halide solution and then contacting the surface with an aqueous cerium halide solution. These steps may optionally be followed by a step of positively charging the metal surface while in contact with an aqueous molybdenum solution.
摘要:
A method for treating the surface of aluminum alloys having a relatively high copper content is provided which includes the steps of removing substantially all of the copper from the surface, contacting the surface with a first solution containing cerium, electrically charging the surface while contacting the surface in an aqueous molybdate solution, and contacting the surface with a second solution containing cerium. The copper is substantially removed from the surface in the first step either by (i) contacting the surface with an acidic chromate solution or by (ii) contacting the surface with an acidic nitrate solution while subjecting the surface to an electric potential. The corrosion-resistant surface resulting from the invention is excellent, consistent and uniform throughout the surface. Surfaces treated by the invention may often be certified for use in salt-water services.
摘要:
A method for treating the surface of aluminum alloys hang a relatively high copper content is provided which includes the steps of removing substantially all of the copper from the surface, contacting the surface with a first solution containing cerium, electrically charging the surface while contacting the surface in an aqueous molybdate solution, and contacting the surface with a second solution containing cerium. The copper is substantially removed from the surface in the first step either by (i) contacting the surface with an acidic chromate solution or by (ii) contacting the surface with an acidic nitrate solution while subjecting the surface to an electric potential. The corrosion-resistant surface resulting from the invention is excellent, consistent and uniform throughout the surface. Surfaces treated by the invention may often be certified for use in salt-water services.
摘要:
Embodiments described herein relate to removing material from a substrate. More particularly, the embodiments described herein relate to polishing or planarizing a substrate by a chemical mechanical polishing process. In one embodiment, a method of chemical mechanical polishing (CMP) of a substrate is provided. The method comprises exposing a substrate having a conductive material layer formed thereon to a polishing solution comprising phosphoric acid, one or more chelating agents, one or more corrosion inhibitors, and one or more oxidizers, forming a passivation layer on the conductive material layer, providing relative motion between the substrate and a polishing pad and removing at least a portion of the passivation layer to expose a portion of the underlying conductive material layer, and removing a portion of the exposed conductive material layer.
摘要:
A method of controlling polishing includes polishing a first substrate having an overlying layer on an underlying layer or layer structure. During polishing, the substrate is monitored with an in-situ monitoring system to generate a sequence of measurements. The measurements are sorted into groups, each group associated with a different zone of a plurality of zones on the substrate. For each zone, a time at which the overlying layer is cleared is determined based on the measurements from the associated group. At least one second adjusted polishing pressure for at least zone is calculated based on a pressure applied in the at least one zone during polishing the substrate, the time for the at least one zone, and the time for another zone. A second substrate is polished using the at least one adjusted polishing pressure.
摘要:
Embodiments described herein relate to removing material from a substrate. More particularly, the embodiments described herein relate to polishing or planarzing a substrate by a chemical mechanical polishing process. In one embodiment, a method of chemical mechanical polishing (CMP) of a substrate is provided. The method comprises exposing a substrate having a conductive material layer formed thereon to a polishing solution comprising phosphoric acid, one or more chelating agents, one or more corrosion inhibitors, and one or more oxidizers, forming a passivation layer on the conductive material layer, providing relative motion between the substrate and a polishing pad and removing at least a portion of the passivation layer to expose a portion of the underlying conductive material layer, and removing a portion of the exposed conductive material layer.
摘要:
A system and method for presenting a uniform file system interface for accessing multiple storage devices where at least one of the storage devices has some resource constraints. The system includes an intermediary device abstracting the individual storage devices and aggregating the storage available on each device into a single volume while accounting for each individual storage device's resource constraints.
摘要:
An alkali-encapsulated cell internally having an alkali metal vapor G encapsulated is provided with first and second heaters 11, 12. The alkali-encapsulated cell 10 has first and second end faces 10a, 10b opposed to each other, and a side face 10c connecting the two end faces 10a, 10b. Each of the first and second heaters 11, 12 has a covering portion 11B, 12B and an extending portion 11C, 12C. Some portions of the alkali-encapsulated cell 10 are inserted in the covering portions 11B, 12B. On the other hand, the extending portions 11C, 12C extend in directions away from the alkali-encapsulated cell 10. The first and second heaters 11, 12 are separated from each other with a distance d0 between them in an opposing direction of the first and second end faces 10a, 10b.
摘要:
A method and apparatus for electroprocessing a substrate is provided. In one embodiment, a method for electroprocessing a substrate includes the steps of biasing a first electrode to establish a first electroprocessing zone between the electrode and the substrate, and biasing a second electrode disposed radially inward of the first electrode with a bias that is different than the bias applied to the first electrode. In one embodiment, the first electrode is coated with an inert material and in this way the same polish rate is obtained with a lower potential level applied to the first electrode.
摘要:
In one embodiment, a method for creating a view for a plurality of data units is provided. A portion of the plurality of data units are stored in one or more storage drives that are in a lower power mode of operation in the storage system. The method includes determining a subset of data units stored in a storage system based on one or more filter criteria. Metadata is determined that represents the subset of data units in the storage system. A view is then created from the metadata. For example, a dynamic or static view may be created. The view is then stored such that it is always accessible on an always on storage drive. The metadata may be used to provide information about the data units in the storage drives that are in a lower power mode of operation without having to power on the storage drives.