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Effect of Grain Size on Hertzian Contact Damage in Alumina

Fernando Guiberteau、Nitin P. Padture、Brian R. Lawn1994-07-01Journal of the American Ceramic Society

The role of microstructural scale on deformation‐micro fracture damage induced by contact with spheres is investigated in monophase alumina ceramics over a range 3–48 μ in grain size. Measurement of a universal indentation stress–strain curve indicates a critical contact pressure ≅5 GPa, above which irreversible defor…

Advanced ceramic materials synthesisMetal and Thin Film MechanicsHigh-Velocity Impact and Material Behavior

Starburst/Cascade Dendrimers: Fundamental building blocks for a new nanoscopic chemistry set

Donald A. Tomalia1994-07-01Advanced Materials

That dendrimer structures act as fundamental chemical building blocks (see Figure), forming a “nanoscopic chemistry set” analogous to the “picoscopic chemistry set” formed by atoms, is discussed in this review. Following the logic used by 19th century chemists while defining the atomic “chemistry set”, it is shown tha…

Gold and Silver Nanoparticles Synthesis and ApplicationsDendrimers and Hyperbranched PolymersFerrocene Chemistry and Applications

Titelei

作者信息未提供1994-07-01Applied Rheology