Resources Contact Us Home
Oxide-bondable solder

Image Number 2 for United States Patent #6319617.

A solder composition that bonds well to oxides and other surfaces to which solder bonding is conventionally difficult is provided. The solder is particularly useful for reliable bonding and packaging of optical components that often have oxide surfaces. The solder composition exhibits a microstructure containing a solder matrix in which is distributed fine, micron-scale islands of rare-earth-containing intermetallic particles. The existence of the islands makes the rare earth elements better available for bonding, and reduce the extent to which the rare earths are oxidized. Advantageously, the solder contains Au and/or Ag, in which the rare earth elements tend to have some solid solubility. Due to this solubility, the Au and/or Ag tend to provide some additional protection of the rare earths against oxidation, and thereby also provide accelerated dissolution of the rare earth into the molten solder.

  Recently Added Patents
System and method for detecting malicious code executed by virtual machine
System and method for self service marketing research
Atmospheric treater with roller confined discharge chamber
Method of and apparatus for laser drilling holes with improved taper
Display screen with graphical user interface
Method for preventing wheat from mycotoxin contamination
  Randomly Featured Patents
Wrench with reinforced hollow handle
Controlled metal removal by parallel-to-face electrochemical machining
Portable footrest
Acrylonitrile fibers, a process for producing acrylonitrile fibers, as well as producing peroxidized fibers, fibrous active carbon or carbon fibers therefrom
Optical component and method for its production
Semiconductor device including arrangement to control connection height and alignment between a plurity of stacked semiconductor chips
Wire rack for processing hard container systems in washing-sterilizers
Level with audio indicator
Tuning system for AM/FM receivers
Membrane for hydrogen and methanol fuel cell