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Online since: May 2014
Authors: Li Qiang Chen, Xiu Mei Lin, Ming Xia Zhu, Li Mei Dai
The green oily liquid was added the absolute alcohol for several times repeatedly, it turned into fine grained shapes finally and kept in a vacuum desiccator.
And the conductivity of the compound depends on the number of water molecules.
And the conductivity of the compound depends on the number of water molecules.
Online since: November 2014
Authors: Wee Fwen Hoon, Mohd. Fareq Abd Malek, Lee Yeng Seng, Lyana Zahid, Liew Hui Fang
The properties of BiT have been reported in a number of papers, cited among others in refs [5]-[7].
The values obtained were high, especially at higher frequencies, and they are necessary values for this BiT ceramic material which microstructures that have uniform grain size and good relative density are essential for a DR that is to be applied in microwave antennas.
The values obtained were high, especially at higher frequencies, and they are necessary values for this BiT ceramic material which microstructures that have uniform grain size and good relative density are essential for a DR that is to be applied in microwave antennas.
Online since: August 2013
Authors: Ming Feng Kuo, Shin Jie Li
Type of Concrete Mixes
(1) Natural group (N): virgin sand and stone were used as coarse and fine aggregates, respectively;
(2) Waste concrete as recycled aggregate from construction sites (Waste Concrete, WC, Figure 1): waste concrete from construction sites was crushed as recycled concrete grains to replace virgin coarse aggregates.
The plan serial number is NSC 94-2211-E-166-007.
The plan serial number is NSC 94-2211-E-166-007.
Online since: September 2014
Authors: Vladimir Smirnov, Mihail G. Bruyako, Vladimir Alexeevich Glukhoedov, Valentin A. Ushkov, Dar'ya V. Kravtsova
Most building materials for civil and special construction are heterogeneous multiphase composites made of continuous phase (“matrix” formed of “matrix material”) and a number of discontinuous (“disperse”) phases – fine and crude powders (“fillers” and “aggregates”), short fibers etc.
This leads to the formation of fine-grained structure of mortars, which is characterized by high strength.
This leads to the formation of fine-grained structure of mortars, which is characterized by high strength.
Online since: August 2014
Authors: Jiří Másilko, Miroslava Hajdúchová, František Šoukal, Jaromír Havlica
The particle size of used clinker was d50 = 8.07 μm, d90 = 39.30 μm, d99 = 70.15 μm (the numbers mean the percent (50 %, 90 % and 99 %) of particles smaller than this value).
Portland clinker with calcium sulphate: Ettringite is formed as a protective layer on the surface of grains.
Portland clinker with calcium sulphate: Ettringite is formed as a protective layer on the surface of grains.
Online since: July 2014
Authors: Bin Yang, Wen Tao Wang, Xi Ran Wang
Investigated its reason, deposition rate is improved with raising SnCl4 concentration and then the coating thickness increases, as well as the deposit sites grow in number, which causes that the celluar deposited particles become smaller and the film thickness also increases.
Ni-Sn-P alloy the surface morphology of deposits is cystiform structure, smooth, the grain of crystal and good properties.
Ni-Sn-P alloy the surface morphology of deposits is cystiform structure, smooth, the grain of crystal and good properties.
Online since: November 2020
Authors: Katarzyna Pietrzak, Jan Dusza, Dariusz Golański, Daniel Kottfer, Tomasz Chmielewski, Michal Ivor, Dávid Medved
., purity of 99.99 %, average grain size of about 4 μm).
As is visible, the coating thickness is approx. 450 μm, coating contains number of pores and there is significant borderline between substrate 16Mo3 steel and NiCrRe coating.
As is visible, the coating thickness is approx. 450 μm, coating contains number of pores and there is significant borderline between substrate 16Mo3 steel and NiCrRe coating.
Online since: March 2017
Authors: Ivo Dlouhy, Jan Čížek, Petra Gavendová Krajňáková, Jan Čupera, Ruslan Shvab
After decreased the EB current of second remelting (from 3 mA to 2,7 mA) and also the hold time between double remelting (from 300 s to 3s) the number of pores are reduce significantly and the structures are refined in CGDS sample.
These droplets consist mainly of aluminium with small yttrium-rich grains [7].
These droplets consist mainly of aluminium with small yttrium-rich grains [7].
Online since: January 2016
Authors: Anusorn Montree, Wichian Siriprom, Kanyakorn Teanchai
For the JCPDS file number 01-086-074 and 00-003-0223 corresponds to calcite and cellulose phase, respectively.
The morphologies of the eggshells is seen that the ES-M samples have the porous scattered all over samples and the pattern like stack of lamella foliated and disoriented foliated grains.
The morphologies of the eggshells is seen that the ES-M samples have the porous scattered all over samples and the pattern like stack of lamella foliated and disoriented foliated grains.
Online since: May 2018
Authors: Zheng Yi Jiang, Zhi Xin Chen, Jing Wei Zhao, Jiang Shan Zhang
A number of service benefits can be achieved in terms of mechanical, electrical and thermal properties and enable their applications not only in the initial military field, but also in aerospace, automotive, electric, chemical and transportation industries [2, 3].
The proposed strengthening mechanism of MMC-GNS composites are grain refinement, Orowan strengthening, load transfer from the matrix to GNSs and increased dislocation density [5].
The proposed strengthening mechanism of MMC-GNS composites are grain refinement, Orowan strengthening, load transfer from the matrix to GNSs and increased dislocation density [5].