High Resolution TEM Observation of in Situ Colloid Formation in CaF2 Crystals

1997 ◽  
Vol 239-241 ◽  
pp. 671-674 ◽  
Author(s):  
V.S. Teodorescu ◽  
Liviu Nistor ◽  
J. Van Landuyt
2010 ◽  
Vol 97-101 ◽  
pp. 3967-3973 ◽  
Author(s):  
Hai Chao Cui ◽  
Feng Gui Lu ◽  
Xin Hua Tang ◽  
Shun Yao

Laser full-penetration welding of novel in situ TiB2 particulate reinforced ZL101 composites was studied using three different welding velocities synchronized with proper laser power. The optimal welding process parameters for laser full-penetration welding of in situ TiB2 reinforced ZL101 composites were suggested. The SEM results show that few pores and uniform particle distribution were obtained. TiB2 particles are intimately contacted with Al matrix according to the results of high-resolution TEM. There was no evidence of chemical reaction at the interface.


Author(s):  
Ludvig de Knoop ◽  
Norvik Voskanian ◽  
Andrew Yankovich ◽  
Kristof Lodewijks ◽  
Alexandre Dmitriev ◽  
...  

2007 ◽  
Vol 13 (S02) ◽  
Author(s):  
K Kishita ◽  
T Kamino ◽  
S Arai ◽  
K Kuroda ◽  
H Saka

Nano Letters ◽  
2016 ◽  
Vol 16 (10) ◽  
pp. 6008-6013 ◽  
Author(s):  
Chao Zhang ◽  
Ovidiu Cretu ◽  
Dmitry G. Kvashnin ◽  
Naoyuki Kawamoto ◽  
Masanori Mitome ◽  
...  

2002 ◽  
Vol 754 ◽  
Author(s):  
J.L. Soubeyroux ◽  
J.M. Pelletier ◽  
B. Van de Moortèle ◽  
T. Epicier

ABSTRACTThe formation of the primary crystals appearing during isothermal annealing of the Zr46.8Ti8.2Cu7.5Ni10Be27.5 (Vit4) bulk metallic glasses has been studied by in-situ neutron diffraction, DSC, high resolution TEM and electron diffraction. We have evidenced that the primary phase appearing on the isothermal plateau at 620 K is quasicrystalline and is beryllium free. Moreover, we have prepared an alloy with the composition determined by EDX (without beryllium), and studied the formation of quasicrystals in this alloy. A comparison is done between the quasicrystalline phases appearing during the annealing of Vit4 and the quasicrystals prepared without beryllium in an amorphous alloy prepared by melt spinning. In particular they have the same intensities and peak positions in the diffraction studies.


1995 ◽  
Vol 151 (1-2) ◽  
pp. 24-32 ◽  
Author(s):  
E. Snoeck ◽  
R. Sinclair ◽  
M.A. Parker ◽  
T.L. Hylton ◽  
K.R. Coffey ◽  
...  

2009 ◽  
Vol 15 (S2) ◽  
pp. 1200-1201
Author(s):  
R Sinclair ◽  
AL Koh ◽  
P Kempen ◽  
HJ Jung

Extended abstract of a paper presented at Microscopy and Microanalysis 2009 in Richmond, Virginia, USA, July 26 – July 30, 2009


2016 ◽  
Vol 115 ◽  
pp. 1-5 ◽  
Author(s):  
Hui Xu ◽  
Ivy Qin ◽  
Horst Clauberg ◽  
Bob Chylak ◽  
Viola L. Acoff

2008 ◽  
Vol 14 (S2) ◽  
pp. 252-253
Author(s):  
CE Carlton ◽  
PJ Ferreira

Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008


1987 ◽  
Vol 103 ◽  
Author(s):  
Karen Holloway ◽  
Khiem BA Do ◽  
Robert Sinclair

ABSTRACTTitanium-silicon and molybdenum-silicon multilayers have been investigated in cross-section using a high resolution TEM with a point-to-point resolution of .22 nm. This resolution has allowed us to confirm the amorphous nature both of the intermixed layers which form at the metal-silicon interfaces on sputter deposition, and of the Ti-Si reaction product which forms at temperatures below which crystalline silicides nucleate.The bulk studies are complemented by in-situ annealing experiments in the high-resolution microscope. Phase reactions in the multilayers can be followed in real time, allowing direct observation of the formation of the amorphous alloy, the appearance of rows of Kirkendall voids, and the crystallization and growth of silicide phases.


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