Apparatus and method for removal of surface oxides via fluxless technique involving electron attachment and remote ion generation
US7977598B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2004 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | May 27, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/095
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention provides a method and apparatus for the dry fluxing of at least one component and/or solder surface via electron attachment. In one embodiment, there is provided a method for removing oxides from the surface of a component comprising: providing a component on a substrate wherein the substrate is grounded or has a positive electrical potential to form a target assembly; passing a gas mixture comprising a reducing gas through an ion generator comprising a first and a second electrode; supplying an amount of voltage to at least one of the first and second electrodes sufficient to generate electrons wherein the electrons attach to at least a portion of the reducing gas and form a negatively charged reducing gas; and contacting the target assembly with the negatively charged reducing gas to reduce the oxides on the component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.