Fundamental Concepts of Wettability and Interfacial Bond Strength in Aluminum Matrix, SiC-Reinforced Composites
Abstract
Research accomplishments include: Surface Energy Measurement - Differential optical reflectance was used to measure the optical transitions in aluminum and its alloys. The semi-empirical correlation developed earlier was used to calculate the surface energy from the measured transition energies. PRedicted surface energies, using the model, were in close agreement with experimentally determined surface energies found in the literature. Wettability Predictions - Wettability studies are based on surface tension measurements from the capillary rise experiment. A mechanism, assuming a defect-rich oxide interlayer at the interface, was proposed to explain the non-wetting behavior of the Al/SiC system. Interfacial Bond Energies - The measured surface energies were used to predict the interfacial bond energies using a work of decohesion model. Punch shear tests were used to make relative determinations of bond strengths for several aluminum alloy/SiC systems. The predicted bond energy trends correlated well with the observed bond strengths. (jes)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1990
- Accession Number
- ADA225158
Entities
People
- David L. Olson
- Glen R. Edwards
Organizations
- Colorado School of Mines