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Ultrastrong translu...
Ultrastrong translucent glass ceramic with nanocrystalline, biomimetic structure
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- Fu, Le (författare)
- Uppsala universitet,Tillämpad materialvetenskap
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- Xie, Ling, 1982- (författare)
- Uppsala universitet,Tillämpad materialvetenskap
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- Fu, Wenbo (författare)
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianshan Road 64, Mianyang, Sichuan 621900, People’s Republic of China
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- Hu, Shuanglin (författare)
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianshan Road 64, Mianyang, Sichuan 621900, People’s Republic of China
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- Zhang, Zhibin (författare)
- Uppsala universitet,Fasta tillståndets elektronik
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- Leifer, Klaus, 1965- (författare)
- Uppsala universitet,Tillämpad materialvetenskap
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- Engqvist, Håkan, 1972- (författare)
- Uppsala universitet,Tillämpad materialvetenskap,Material in Medicine
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- Xia, Wei, Associate Professor (författare)
- Uppsala universitet,Tillämpad materialvetenskap,Material in Medicine
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(creator_code:org_t)
- 2018-10-18
- 2018
- Engelska.
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Ingår i: Nano letters (Print). - : American Chemical Society (ACS). - 1530-6984 .- 1530-6992. ; 18:11, s. 7146-7154
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Transparent/translucent glass ceramics (GCs) have broad applications in biomedicine, armor, energy, and constructions. However, GCs with improved optical properties typically suffer from impaired mechanical properties, compared to traditional sintered full-ceramics. We present a method of obtaining high-strength, translucent GCs by preparing ZrO2-SiO2 nanocrystalline glass ceramics (NCGCs), with a microstructure of monocrystalline ZrO2 nanoparticles (NPs), embedded in an amorphous SiO2 matrix. The ZrO2-SiO2 NCGC with a composition of 65%ZrO2-35%SiO2 (molar ratio, 65Zr) achieved an average flexural strength of 1 GPa. This is one of the highest flexural strength values ever reported for GCs. ZrO2 NPs have a core-shell structure, and the shell is a thin (2–3 nm) amorphous Zr/Si interfacial layer that provides strong bonding between the ZrO2 NPs and SiO2 matrix. The diffusion of Si atoms into the ZrO2 NPs forms a Zr-O-Si superlattice. Electron tomography results show that some of the ZrO2 NPs are connected in one direction, forming in situ ZrO2 nanofibers (with length of ~500 nm), and that the ZrO2 nanofibers are stacked in an ordered way in all three dimensions. The nano-architecture of the ZrO2 nanofibers mimics the architecture of mineralized collagen fibril in cortical bone. Strong interface bonding enables efficient load transfer from the SiO2 matrix to the 3D nano-architecture built by ZrO2 nanofibers and NPs, and the 3D nano-architecture carries the majority of the external load. These two factors synergistically contribute to the high strength of the 65Zr NCGC. This study deepens our fundamental understanding of the microstructure-mechanical strength relationship, which could guide the design and manufacture of other high-strength, translucent GCs.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
Nyckelord
- glass ceramic
- translucency
- high strength
- biomimetic structure
- 3D nano-architecture
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Fu, Le
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Xie, Ling, 1982-
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Fu, Wenbo
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Hu, Shuanglin
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Zhang, Zhibin
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Leifer, Klaus, 1 ...
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visa fler...
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Engqvist, Håkan, ...
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Xia, Wei, Associ ...
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