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Reliability of Adhesive Bonds Under Severe Environments (1984) / Chapter Skim
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'SUMMARY OF DISCUSSION: INTERFACES'
Pages 31-34

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From page 31...
... extending from some point in the adherend where the local properties begin to change from the bulk Thermal.Mechanical, Chemical Environment Bulk Adhesive Polymer Surface Layer Adsorbed Material Adherend Surface Layer Bulk Adherend Figure 1 Interphase.
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From page 32...
... It is an integral part of the formed bond and is subject to the mechanical, chemical, and thermal environment experienced by the adhesive joint during its useful lifetime. Acceptance of this "interphase" as a working model of the actual joint interface serves as a framework for the systematic enumeration of the research needs that must be addressed to make the adhesive interface a functioning component of an adhesive bond and not a limiting factor to its performance in severe environments.
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From page 33...
... In a more short-term vein, can the currently used anodization methods be applied successfully to the new generation of structural materials, such as metal matrix composites, adherends prepared with powder metallurgical techniques, lithium alloy aluminums, titanium alloys for high-temperature applications, and structural steels? NATURE OF THE INTERPHASE Once the adherend surface has been prepared, actual formation of the bond occurs.
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From page 34...
... A better understanding of the mechanics of load transfer through the interphase region is required in order to optimize the interphase structurally. Elevated temperatures allow degradation mechanisms to operate that might not be favorable under ambient conditions.
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Key Terms

  • adherend surface
  • adhesive bond
  • bond durability
  • bond performance
  • functioning component

  • giving rise
  • severe environments
  • joint performance
  • analytical techniques
  • oxide surface

  • surface layer
  • morphological considerations
  • potential interphase
  • techniques exist
  • dynamic conditions

  • actual joint
  • polarization modulation
  • morphological alterations
  • nuclear magnetic
  • situ characterization

  • adherends prepared
  • topographical alteration
  • adherend figure
  • versus bulk
  • offering information

  • interfacial bond
  • predictive model
  • coupling agents
  • structural steels
  • composition existing


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