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Strengthening of Ceramics Surface by Crack Healing and Electron Beam Irradiation
Author(s) -
Nakao Wataru,
Chiba Yohei,
Iwata Keisuke,
Nishi Yoshitake,
Ando Kotoji
Publication year - 2011
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2009.02445.x
Subject(s) - materials science , ceramic , composite material , irradiation , reinforcement , layer (electronics) , beam (structure) , cathode ray , self healing , surface energy , surface layer , surface modification , fracture mechanics , fracture (geology) , electron , structural engineering , mechanical engineering , medicine , physics , alternative medicine , pathology , quantum mechanics , nuclear physics , engineering
New hybrid surface reinforcement consisting of crack healing and low energy electron beam irradiation has been proposed for structural ceramics. Crack healing was found to make surface cracks be innocuous. Low‐energy electron beam irradiation was found to significantly harden the treated subsurface layer, which includes the matrix layer near the surface as well as the partly or fully covered silica layer formed by the crack healing. Moreover, it was found not to break the improved fracture strength due to crack healing. These results suggest that the proposed surface reinforcement can actualize to manage the existence of surface cracks in structural ceramics.