Research on Grinding Residual Stresses on the Surface of Nanostructured Ceramic Coatings

Abstract:

Residual stress produced on the surface of nanostructured ceramic coatings when they were grinded by diamond superhard abrasive wheel, these residual stresses affected directly the fracture strength, fatigue strength and corrosion resistance of the ceramic parts, they affected the surface quality of machined ceramic parts, and thus they affected the working reliability and the service life of ceramic parts. The tests show that the distribution of residual stress is directional, the residual compressive stress can make the hardness of the material increase, they can reduce the wear rate of the material, for the tested specimen, grinding surface whole residual stress σ is the sum up original residual stress σ₀ (existed in the part’s surface ) and grinding residual stress Δσ (formed by grinding process.), σ=σ₀ + Δσ.

• Periodical: Advanced Materials Research (Volume 709)
• Pages: 131-134
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.709.131
• Online since: June 2013
• Authors: Wei Xiang Liu, Zhong Yu Zhou
• Keywords: Crack, Grinding, Nanostructured Ceramic Coatings, Surface Residual Stress

References

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