TY - JOUR
T1 - Enhanced fracture toughness of silica glass by ion-implanted platinum nanoparticles
AU - Gutiérrez-Menchaca, Jesús
AU - Garay-Tapia, Andrés Manuel
AU - Torres-Torres, David
AU - Arizmendi-Morquecho, Ana María
AU - Leyva-Porras, Cesar
AU - Torres-Torres, Carlos
AU - Oliver, Alicia
N1 - Publisher Copyright:
© 2021 John Wiley & Sons, Ltd.
PY - 2021/6
Y1 - 2021/6
N2 - 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 (Er) increased by about 7% for the nanostructured compound. Additionally, an increase in fracture toughness (Kc) 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.
AB - 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 (Er) increased by about 7% for the nanostructured compound. Additionally, an increase in fracture toughness (Kc) 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.
KW - elasto-plastic indentation
KW - finite element simulation
KW - fracture toughness
KW - microplasticity
KW - nanostructures
KW - silica glass
UR - http://www.scopus.com/inward/record.url?scp=85101150525&partnerID=8YFLogxK
U2 - 10.1111/ffe.13437
DO - 10.1111/ffe.13437
M3 - Artículo
AN - SCOPUS:85101150525
SN - 8756-758X
VL - 44
SP - 1423
EP - 1438
JO - Fatigue and Fracture of Engineering Materials and Structures
JF - Fatigue and Fracture of Engineering Materials and Structures
IS - 6
ER -