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  • Title: [Investigation of Pd-Ag alloy for porcelain fusing. (Part 2) Thermal expansion (author's transl)].
    Author: Mori J.
    Journal: Shika Rikogaku Zasshi; 1978 Oct; 19(48):239-53. PubMed ID: 392021.
    Abstract:
    Thermal expansion coefficient and thermal expansion hysteresis (residual expansion after thermal cycles) were measured using nine Pd-Ag alloys (In and/or Sn added) prepared in Part 1. The following results were obtained. (1) The thermal expansion coefficients were ranged 13 approximately 15 x 10(-6)/ degrees C in the temperature range of 400 to 200 degrees C. (2) The effects of the addition of indium and tin to the thermal expansion coefficient depended on the concentration of palladium and silver. (3) The thermal expansion hysteresis was ranged from 0.21 to -0.02% third thermal cycle. It was very small in comparison with that of precious alloys. (4) The thermal expansion hysteresis decreased with increase of addition of indium and tin. (5) The thermal expansion coefficient had no correlation with the bonding strength.
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