Thermoelectric Materials Evaluation Program. Annual technical report for fiscal years 1980/1981

Technical Report · Wed Apr 01 00:00:00 EST 1981

DOI:https://doi.org/10.2172/5049266· OSTI ID:5049266

Hinderman, J D

During this contract period, all major contract milestones were accomplished. This included the fabrication and test of two N-legs, three single-couple assemblies, and three six-couple modules. The BOL performance objective was met and the degradation rate of 0.3%/1000 hours was nearly met for elements, couples, and modules. Considerable effort was spent in understanding the ratcheting phenomenon on the P-leg (cycle resistance changes at the hot end). A designed series of experiments was performed to identify the effect of contact pressure and hot junction temperature on P-leg degradation (time to onset of ratcheting, etc.). At the end of the fiscal year the results of this experimentation indicated that the theoretical estimate of an acceleration factor of twenty-one for module tests (915/150/sup 0/C, 14.0 amperes) is valid.

• Research Organization: Minnesota Mining and Mfg. Co., St. Paul (USA). Industrial Electrical Products Div.
• DOE Contract Number: AC02-76ET33002
• OSTI ID: 5049266
• Report Number(s): MMM-2331-0691; ON: DE84010343
• Resource Relation: Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

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