Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Peered proctoring
Front face of a vehicle wheel
Carbon dioxide capture system and methods of capturing carbon dioxide
Device to control force required to depress accelerator pedal
Probiotic Bifidobacterium strains
Device and method for processing input data of protective relay
Power or voltage oscillation damping in a power transmission system
  Randomly Featured Patents
Harness tightening system
Bipolar transistor, semiconductor light emitting device and semiconductor device
Apparatus and method for controlling booting operation of computer system
Dynamic tree-node property page extensions
Multi-pole circuit breaker and apparatus for preventing deformation of driving shaft thereof
Cover for control panel for a construction machine
File system and a recording medium with a program used in the system stored therein
Cover opening and closing device
Stable acidic oil-in-water type emulsions and compositions containing them
Low dielectric constant material