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
Image forming apparatus, image forming method, and computer readable medium for identifying target-recording element using detection pattern
Circuit arrangement having a load transistor and a voltage limiting circuit and method for driving a load transistor
Account and customer creation in an on-line banking model
Extreme ultraviolet light generation apparatus
Active pulse blood constituent monitoring
Using interrupted through-silicon-vias in integrated circuits adapted for stacking
Method and system for electronic distribution of product redemption coupons
  Randomly Featured Patents
Method and system to improve decision-driven control loops
Table
Light retainer
Manufacturing process for printed wiring board
Joint sound synthesis and spatialization
Ramp signal generation circuit
Rat osteosarcoma cell line OSR4TR1
Multi-image reproducing and recording apparatus with appended information
Code coverage test selection
Repeater station wherein input frame data are accessible