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  • Users: rick
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  1. rick

    Gold Embrittled Solder Joints

    I know that gold will cause lead-tin solder joints to become brittle over time, NASA tells me so. They have specific procedures to avoid it. Has anyone seen anything in writing that goes into any detail as to what the mechanism is and when to worry about it? Thanks. Rick Schmidt...
  2. rick

    Gold Embrittlement in solder joints

    Iknow that gold will cause lead-tin solder joints to become brittle over time, NASA tells me so. They have specific procedures to avoid it. Has anyone seen anything in writing that goes into any detail as to what the mechanism is and when to worry about it? Thanks. Rick Schmidt...
  3. rick

    Operating charactistics of an impulse turbine

    Has anyone got a good source for the detailed performance equations for an impulse turbine? <p>Rick Schmidt<br><a href=mailto:ricks@lpl.arizona.edu>ricks@lpl.arizona.edu</a><br><a href= > </a><br>Mining, Mechanical and Electronics engineer.

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