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Enhanced fracture toughness of silica glass by ion‐implanted platinum nanoparticles
Author(s) -
GutiérrezMenchaca Jesús,
GarayTapia Andrés Manuel,
TorresTorres David,
ArizmendiMorquecho Ana María,
LeyvaPorras Cesar,
TorresTorres Carlos,
Oliver Alicia
Publication year - 2021
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.13437
Subject(s) - materials science , nanoindentation , fracture toughness , composite material , brittleness , toughness , nanoparticle , amorphous solid , nanocomposite , nanotechnology , chemistry , crystallography
Abstract The enhancement of fracture toughness exhibited by silica glass (SG) remains a challenge for a wide variety of technology applications, particularly without implying significant changes in the glass structure. The present work shows that embedded platinum nanoparticles (PtNPs) can significantly improve the mechanical performance of silica glass (PtNPs/SG). The PtNPs were implanted into a high‐purity SG substrate with 3MV Tandem accelerator Pelletron and thermally annealed at 600°C. Rutherford backscattering spectroscopy and transmission electron microscopy characterizations disclosed a Gaussian distribution of PtNPs at 600‐nm depth. Nanoindentation test revealed that brittleness ( B ) decreased about 24% and the effective elastic modulus ( E r ) increased by about 7% for the nanostructured compound. Additionally, an increase in fracture toughness ( K c ) of 19% and an enhancement of elasto‐plastic performance behavior during the scratch test were observed. Therefore, embedded PtNPs represent a potential solution for brittleness problems in SG.