scholarly journals Fully automated SEM image analysis

Scanning ◽  
1986 ◽  
Vol 8 (5) ◽  
pp. 221-231 ◽  
Author(s):  
R. M. Edwards ◽  
J. Lebiedzik ◽  
G. Stone
Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1543
Author(s):  
Francisca Guadalupe Cabrera-Covarrubias ◽  
José Manuel Gómez-Soberón ◽  
Carlos Antonio Rosas-Casarez ◽  
Jorge Luis Almaral-Sánchez ◽  
Jesús Manuel Bernal-Camacho

The porosity of mortars with recycled ceramic aggregates (10, 20, 30, 50, and 100% as a replacement of natural aggregate) was evaluated and analyzed using three different techniques. The results of gas adsorption (N2), Scanning Electron Microscopy (SEM) image analysis and open porosity allowed establishing the relationship between the recycled aggregate content and the porosity of these mortars, as well as the relationship between porosity and the physical and mechanical properties of the mortars: absorption, density, compressive strength, modulus of elasticity, and drying shrinkage. Using the R2 coefficient and the equation typology as criteria, additional data such as Brunauer, Emmett, and Teller (BET) surface area (N2 adsorption) established significant correlations with the mentioned properties; with SEM image analysis, no explanatory relationships could be established; and with open porosity, revealing relationships were established (R2 > 0.9). With the three techniques, it was confirmed that the increase in porosity is related to the increase in the amount of ceramic aggregate; in particular with gas adsorption (N2) and open porosity. It was concluded that the open porosity technique can explain the behavior of these recycled mortars with more reliable data, in a simple and direct way, linked to its establishment with a more representative sample of the mortar matrix.


2007 ◽  
Vol 534-536 ◽  
pp. 1529-1532 ◽  
Author(s):  
Celine Pascal ◽  
Jean Marc Chaix ◽  
A. Dutt ◽  
Sabine Lay ◽  
Colette H. Allibert

A steel/cemented carbide couple is selected to generate a tough/hard two layers material. The sintering temperature and composition are chosen according to phase equilibria data. The choice of optimal sintering conditions needs experimental studies. First results evidence liquid migration from the hard layer to the tough one, leading to porosity in the hard region. The study of microstructure evolution during sintering of the tough material (TEM, SEM, image analysis) evidences the coupled mechanisms of pore reduction and WC dissolution, and leads to temperature and time ranges suitable to limit liquid migration. The sintering of the two layer material is then shown to need further compromises to avoid interface crack formation due to differential densification.


2019 ◽  
Vol 14 (0) ◽  
pp. 3402049-3402049
Author(s):  
Hirohiko TANAKA ◽  
Shin KAJITA ◽  
Noriyasu OHNO

2016 ◽  
Author(s):  
Shinichi Shinoda ◽  
Yasutaka Toyoda ◽  
Yutaka Hojo ◽  
Hitoshi Sugahara ◽  
Hiroyuki Sindo

2010 ◽  
Vol 24 (11-12) ◽  
pp. 1855-1867 ◽  
Author(s):  
S. G. Prolongo ◽  
M. R. Gude ◽  
G. Del Rosario ◽  
A. Ureña

2014 ◽  
Vol 1051 ◽  
pp. 687-691
Author(s):  
Yuan Zhang ◽  
Jun Cao ◽  
Yun Dong

The abrasion resistance of the alkaline residue admixture concrete was observed in the experiment under different conditions, the results showed that: the abrasion resistance of the alkaline residue concrete first increased and then decreased in the law with the increase of alkaline content. The abrasion resistance of concrete is best when the content of alkaline residue is 10% of cement material, combined with SEM image analysis, the microstructure of concrete that alkaline residue accounted for cement material 10% is more dense than others proportions concrete, and the abrasion resistance of concrete will decrease with the increasing the amount of alkaline residue. The experiment also observed the abrasion resistance of the different curing period of the alkaline residue admixture concrete. We could find that the abrasion resistance of concrete increases with the growth of curing age.


1996 ◽  
Vol 15 (21) ◽  
Author(s):  
J.C.L. Chow ◽  
Wai Lo ◽  
H.-T. Leung ◽  
D.A. Cardwell

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