On the chemo-mechanical polishing (CMP) of Si3N4 bearing balls with water based CeO2 slurry

Article Abstract:

A study was conducted to investigate the chemo-mechanical polishing (CMP) mechanism of Si3N4 ball bearings with CeO2 abrasive. The CeO2 was found to perform two important functions in the CMP of Si3N4 that lead to an effective removal of brittle SiO2 reaction without damaging the Si3N4 substrate. Results also show that CeO2 is more effective in water and is environmentally safer than Cr2O3.

Research, Strength of materials, Strength (Materials), Silicon nitride, Silicon nitrides, Abrasives, Ball-bearings, Ball bearings

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Influence of carbon content in cobalt-based superalloys on mechanical and wear properties

Article Abstract:

Analysis of phase formation and transformation in the micro-structures was conducted using metallographic, x-ray diffraction, and differential scanning calorimetry techniques. There was significant effect of the carbon content on wear resistance of the alloy.

General services, Maintenance and repair, Carbon compounds, Microstructure, Microstructures, Chemical properties

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Fundamental mechanical properties of carbon nanotubes: current understanding and the related experimental studies

Article Abstract:

Carbon nanotubes have many exceptional mechanical and electronic characteristics originating from their unique geometric and chemical structures. The current status of the various experimental studies of their basic mechanical properties is reviewed.

Molecular structure, Nanotubes

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