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Effects of titanium on some surface properties of nitride ceramics

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Abstract

The presence of titanium at nitride ceramic-braze interfaces can promote both wetting and bonding. Previously we have added titanium to brazes and examined the effects of segregation to the interfaces but in this study, the ceramic surfaces were precoated with titanium before they were contacted by brazes or solders. Ion assisted coatings were applied to sialon, Si3N4 and AIN, and sputter ion platings were applied to sialon. Coating adhesion measured by scratch testing was better for the sputter ion platings than the ion assisted coatings. The platings were also better wetted by an Ag-Cu eutectic braze, and produced joints 50% stronger than those achievable with a commercially developed Ag-Cu-Ti active metal braze.

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References

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Authors and Affiliations

  1. Faculty of Material Science and Engineering, Delft University of Technology, Rotterdamsenveg, 137, 2628, Al Delft, The Netherlands

    C. M. E. Van Thoor

  2. Harwell Laboratory, Oxfordshire, UK

    J. A. Hemsworth, M. G. Nicholas & R. M. Crispin

Authors
  1. C. M. E. Van Thoor
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  2. J. A. Hemsworth
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  3. M. G. Nicholas
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  4. R. M. Crispin
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Van Thoor, C.M.E., Hemsworth, J.A., Nicholas, M.G. et al. Effects of titanium on some surface properties of nitride ceramics. J Mater Sci 26, 1311–1315 (1991). https://doi.org/10.1007/BF00544470

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  • DOI: https://doi.org/10.1007/BF00544470

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