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Masters Thesis Possibilities. Nicholas Clore August 10, 2010. Tin Whiskers in Humidity Controlled Environment. Thesis Topic: Growth of Tin Whiskers in a Controlled Humidity Environment.

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masters thesis possibilities

Masters Thesis Possibilities

Nicholas Clore

August 10, 2010

Tin Whiskers in Humidity Controlled Environment

thesis topic growth of tin whiskers in a controlled humidity environment
Thesis Topic: Growth of Tin Whiskers in a Controlled Humidity Environment
  • High temperature/high humidity storage(55 – 65 °C / 85 – 93 %RH) has been shown to accelerate whisker growth
  • Most research focuses on:
    • High temp/low humidity (65 °C/30%RH)
    • Room temp/low humidity (25 °C/30%RH)
    • Room temp/high humidity (25 °C/85%RH)
    • High temp/high humidity (65 °C/85%RH)
thesis topic growth of tin whiskers in a controlled humidity environment1
Thesis Topic: Growth of Tin Whiskers in a Controlled Humidity Environment
  • Although it has been seen that high humidity promotes whisker growth, the mechanics and science is not well understood.
  • The proposed thesis topic would investigate the affects of humidity on Tin samples and their whisker growth.
cisco forestie
Cisco/Forestie
  • Samples would be prepared and cycled/stored by Cisco/Foresite.
  • Thesis would be based on whisker analysis.
  • Timeline? Finish Thesis by June, 2011? Sept, 2011?
use temperature humidity controlled furnace
Use Temperature/Humidity Controlled Furnace
  • Temp/Humidity controlled furnace would save time on sample prep and increase reliability.
  • Could rent/buy one for Cincinnati Sub-Zero
  • Borrow one from Crane?
  • Temperature Range: -73°C to 190°C
  • Humidity Range: 10% to 95% RH

Cincinnati Sub-Zero Bench top model

impermeable bag sealed polymer box
Impermeable Bag/Sealed Polymer Box
  • Would store samples in impermeable bags or polymer box for heat treatment at Purdue-Calumet.
  • Bag/box would include hydrated salt to control humidity
using saturated salts to control humidity
Using Saturated Salts to Control Humidity
  • Accurate humidity at set temperatures.
  • Wide range of achievable humidity and various temperatures.
  • Will not work well with temperature cycling.
  • Possible “salt creep” on to samples.
using saturated salts to control humidity1
Using Saturated Salts to Control Humidity

Table from Omega – Table is not inclusive

quantomix wetsem
Quantomix WETSEM
  • Store sample in enclosed SEM stage with set humidity using salt.
  • Real-time photos with heat cycling using SEM.
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