scholarly journals Effect of heat-treatment on luminescence and structure of Ag nanoclusters doped oxyfluoride glasses and implication for fiber drawing

2012 ◽  
Vol 34 (4) ◽  
pp. 616-621 ◽  
Author(s):  
A.S. Kuznetsov ◽  
Ngo T. Cuong ◽  
V.K. Tikhomirov ◽  
M. Jivanescu ◽  
A. Stesmans ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Fiber Drawing ◽  
Oxyfluoride Glasses ◽  
Ag Nanoclusters

Plasmonic Dicke Effect in Ag-Nanoclusters-Doped Oxyfluoride Glasses

2015 ◽  
Vol 119 (34) ◽  
pp. 20051-20056 ◽  
Author(s):  
Mikhail V. Shestakov ◽  
Eduard Fron ◽  
Liviu F. Chibotaru ◽  
Victor V. Moshchalkov
Keyword(s):  
Oxyfluoride Glasses ◽  
Ag Nanoclusters

Luminescence properties of Ag nanoclusters doped SiO2–PbF2 oxyfluoride glasses

2016 ◽  
Vol 169 ◽  
pp. 695-700 ◽  
Author(s):  
Zhenzhen Zhou ◽  
Guanghui Liu ◽  
Qinhua Wei ◽  
Hua Yang ◽  
Qian Liu
Keyword(s):  
Luminescence Properties ◽  
Oxyfluoride Glasses ◽  
Ag Nanoclusters

Synthesis of solid and spirally cracked TiO2 fibers by a liquid mix process

2003 ◽  
Vol 18 (3) ◽  
pp. 687-692 ◽  
Author(s):  
Chen-Lung Fan ◽  
Daniel Ciardullo ◽  
Wayne Huebner
Keyword(s):  
Heat Treatment ◽  
Volume Change ◽  
Weight Change ◽  
Chelating Agent ◽  
Titanium Isopropoxide ◽  
Additional Treatment ◽  
Fiber Drawing ◽  
Additional Annealing ◽  
Uniform Manner ◽  
Average Size

Titania fibers were synthesized by a liquid mix process, starting by complexing titanium isopropoxide with a chelating agent solution to form a precursor resin for further fiber drawing. The as-drawn continuous precursor fibers underwent a weight change of 80% and a volume change of 75% after heat treatment at 800 °C in nitrogen followed by an additional treatment at 600 °C in air. The fibers consisted mainly of rutile with 5–10% anatase. Further treatment at 700 °C transformed the anatase completely into rutile. Fibers with finished diameter less than about 15 μm were solid with smooth surfaces. Fibers with finished diameter greater than about 15 μm were hollow and spirally cracked in a uniform manner. Fibers treated at 600 °C showed no visible grains. Additional annealing at 800 °C grew grains to an average size of 0.3–0.4 μm. The fibers appeared solid and dense.

Luminescence of oxyfluoride glasses co-doped with Ag nanoclusters and Yb3+ions

RSC Advances ◽  
2012 ◽  
Vol 2 (4) ◽  
pp. 1496-1501 ◽  
Author(s):  
V. K. Tikhomirov ◽  
T. Vosch ◽  
E. Fron ◽  
V. D. Rodríguez ◽  
J. J. Velázquez ◽  
...  
Keyword(s):  
Oxyfluoride Glasses ◽  
Ag Nanoclusters ◽  
Co Doped

scholarly journals Preparation and luminescence of bulk oxyfluoride glasses doped with Ag nanoclusters

2010 ◽  
Vol 18 (21) ◽  
pp. 22032 ◽  
Author(s):  
V. K. Tikhomirov ◽  
V. D. Rodríguez ◽  
A. Kuznetsov ◽  
D. Kirilenko ◽  
G. Van Tendeloo ◽  
...  
Keyword(s):  
Oxyfluoride Glasses ◽  
Ag Nanoclusters

scholarly journals Enhanced and tunable white light emission from Ag nanoclusters and Eu3+-co-doped CaBAl glasses

RSC Advances ◽  
2018 ◽  
Vol 8 (61) ◽  
pp. 35263-35270 ◽  
Author(s):  
Marcelo Sandrini ◽  
Robson Ferrari Muniz ◽  
Vitor Santaella Zanuto ◽  
Franciana Pedrochi ◽  
Yannick Guyot ◽  
...  
Keyword(s):  
Heat Treatment ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Luminescence Properties ◽  
Ag Nanoclusters ◽  
Co Doped

In this work, Ag:Eu-co-doped calcium boroaluminate glasses were prepared and submitted to further heat treatment to form different Ag species. The optical and luminescence properties were investigated in terms of heat treatment times.

The Precipitation of Si in AlCuSi Thin Films

1973 ◽  
Vol 31 ◽  
pp. 34-35 ◽  
Author(s):  
R. M. Anderson
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Heat Treatment ◽  
Solid Solution ◽  
Integrated Circuit ◽  
Copper Film ◽  
Solution Concentration ◽  
X Ray ◽  
Silicon Thin Films ◽  
Before And After

Aluminum-copper-silicon thin films have been considered as an interconnection metallurgy for integrated circuit applications. Various schemes have been proposed to incorporate small percent-ages of silicon into films that typically contain two to five percent copper. We undertook a study of the total effect of silicon on the aluminum copper film as revealed by transmission electron microscopy, scanning electron microscopy, x-ray diffraction and ion microprobe techniques as a function of the various deposition methods.X-ray investigations noted a change in solid solution concentration as a function of Si content before and after heat-treatment. The amount of solid solution in the Al increased with heat-treatment for films with ≥2% silicon and decreased for films <2% silicon.

The influence of heat treatment on the fiber/matrix interface in a SiC-reinforced glassceramic

1988 ◽  
Vol 46 ◽  
pp. 742-743
Author(s):  
E. Bischoff ◽  
O. Sbaizero
Keyword(s):  
Heat Treatment ◽  
Aluminum Silicate ◽  
Lithium Aluminum ◽  
Interfacial Region ◽  
Specimen Preparation ◽  
Crack Wake ◽  
Pull Out ◽  
Annealed Material ◽  
Ultrasonic Drilling ◽  
Fiber Matrix Interface

Fiber or whisker reinforced ceramics show improved toughness and strength. Bridging by intact fibers in the crack wake and fiber pull-out after failure contribute to the additional toughness. These processes are strongly influenced by the sliding and debonding resistance of the interfacial region. The present study examines the interface in a laminated 0/90 composite consisting of SiC (Nicalon) fibers in a lithium-aluminum-silicate (LAS) glass-ceramic matrix. The material shows systematic changes in sliding resistance upon heat treatment.As-processed samples were annealed in air at 800 °C for 2, 4, 8, 16 and 100 h, and for comparison, in helium at 800 °C for 4 h. TEM specimen preparation of as processed and annealed material was performed with special care by cutting along directions having the fibers normal and parallel to the section plane, ultrasonic drilling, dimpling to 100 pm and final ionthinning. The specimen were lightly coated with Carbon and examined in an analytical TEM operated at 200 kV.

Strain-induced martensite effects on transgranular carbide precipitation in type 304 stainless steels

1991 ◽  
Vol 49 ◽  
pp. 604-605
Author(s):  
A.H. Advani ◽  
L.E. Murr ◽  
D. Matlock
Keyword(s):  
Heat Treatment ◽  
Grain Boundary ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Deformation Twin ◽  
Austenitic Stainless Steels ◽  
Carbide Precipitation ◽  
Strain Induced Martensite ◽  
Type 304

Thermomechanically induced strain is a key variable producing accelerated carbide precipitation, sensitization and stress corrosion cracking in austenitic stainless steels (SS). Recent work has indicated that higher levels of strain (above 20%) also produce transgranular (TG) carbide precipitation and corrosion simultaneous with the grain boundary phenomenon in 316 SS. Transgranular precipitates were noted to form primarily on deformation twin-fault planes and their intersections in 316 SS.Briant has indicated that TG precipitation in 316 SS is significantly different from 304 SS due to the formation of strain-induced martensite on 304 SS, though an understanding of the role of martensite on the process has not been developed. This study is concerned with evaluating the effects of strain and strain-induced martensite on TG carbide precipitation in 304 SS. The study was performed on samples of a 0.051%C-304 SS deformed to 33% followed by heat treatment at 670°C for 1 h.

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