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Online since: January 2015
Authors: Marta Krawczyk, Pawel Figiel, Witold Biedunkiewicz, Anna Biedunkiewicz, Anna Stasiukiewicz, Grzesiak Dariusz
Unlike the conventional material-removal processing method, SLM is based on material incremental manufacturing (MIM) and has a number of advantages such as net-shape fabrication without the requirement of molds or dies, a high level of process flexibility, and a wide range of applicable materials [7].
The results of the investigation suggest that TiC is formed through a dissolution/precipitation mechanism by means of the heterogeneous nucleation of TiC and subsequent grain growth. 5µm 20µm Fig. 2.
The results of the investigation suggest that TiC is formed through a dissolution/precipitation mechanism by means of the heterogeneous nucleation of TiC and subsequent grain growth. 5µm 20µm Fig. 2.
Online since: March 2017
Authors: Zainal Arifin Ahmad, Mohamad Najmi Masri, Muhammad Azwadi Sulaiman, Mohd Fadzil Ain, Saniah Abdul Karim
The major peaks are matched with CCTO with ICDD file ref number 01-075-2188.
Ain, Investigation of Grain Size Effect on the Impedance of CaCu3Ti4O12 from 100 Hz to 1 GHz of Frequency, Adv.
Ain, Investigation of Grain Size Effect on the Impedance of CaCu3Ti4O12 from 100 Hz to 1 GHz of Frequency, Adv.
Online since: December 2016
Authors: Karel Slámečka, Ladislav Čelko, Lenka Klakurková, Jiří Švejcar, David Jech, Miroslava Horynová
Results and discussion
The atmospheric plasma sprayed conventional ZrO2+Y2O3 – CoNiCrAlY thermal barrier coating system of the sample 1 shows a typical structure composed of pores and of considerable number of microcracks, especially at interfaces of individual splats [4].
Suspension plasma sprayed ceramic YSZ top coat (44 µm thick) of the sample 3 is characterized by nanometric to submicrometric size of pores and the microstructure is composed from very fine grains.
Suspension plasma sprayed ceramic YSZ top coat (44 µm thick) of the sample 3 is characterized by nanometric to submicrometric size of pores and the microstructure is composed from very fine grains.
Online since: September 2021
Authors: Elena M. Gotlib, Alla G. Sokolova, Dilyara F. Sadykova, Elena V. Perushkina
On the contrary, the toxicity of QAC is inversely proportional to the length of the carbon chain; it decreases as the number of carbon atoms in the radical increases [6].
Wollastonite of the Mivoll 10-97 brand (TU 577-006-40705684-2003) with a characteristic length-to-grain ratio of 15: 1 was used as a modifier [8].
Wollastonite of the Mivoll 10-97 brand (TU 577-006-40705684-2003) with a characteristic length-to-grain ratio of 15: 1 was used as a modifier [8].
Online since: August 2006
Authors: P.F. Tortorelli, M. Malessa, Ian G. Wright, Michael Schütze, Daniel Renusch, R.B. Dooley
This paper presents
a very concise summary of the present knowledge in the form of an approach to a comprehensive
scale failure model which is based on a number of microscopic and macroscopic system parameters.
The intention of this paper is to present a very concise summary of the present knowledge in the form of an approach to a comprehensive scale failure model which is based on a number of microscopic and macroscopic system parameters.
Figure 4: Ashby Map, for type 316 stainless steel, grain size 200µm At the same time, stress values can be entered into these "Ashby" maps corresponding to a critical oxide stress (failure stress) calculated from the critical oxide strain multiplied by the Young's modulus of the oxide.
Conclusions As intended the paper has presented a very concise summary of a state-of-the art approach to a comprehensive scale failure model based on a number of microscopic and macroscopic system parameters.
The intention of this paper is to present a very concise summary of the present knowledge in the form of an approach to a comprehensive scale failure model which is based on a number of microscopic and macroscopic system parameters.
Figure 4: Ashby Map, for type 316 stainless steel, grain size 200µm At the same time, stress values can be entered into these "Ashby" maps corresponding to a critical oxide stress (failure stress) calculated from the critical oxide strain multiplied by the Young's modulus of the oxide.
Conclusions As intended the paper has presented a very concise summary of a state-of-the art approach to a comprehensive scale failure model based on a number of microscopic and macroscopic system parameters.
Online since: December 2011
Authors: Ming Zhou, Jin Zhou Zhao, Yan Yang
SEM indicates that the number of the micropores largely decreased with the water/oil ratio increasing from 4% to 10%.
By the grain size analysis, mean diameter after absorbing water has been approximately five times the volume of particles before absorbing water.
However, the number of the micropores largely decreased with the water/oil ratio increasing from 4% to 10%.This indicate that when more water is added, the surface coverage ratio of surfactant decrease and the interdroplet attractive interactions lead to fusion and mass exchange during inverse suspension polymerization.
SEM indicates the size and number of micropores largely decrease with the increase of the water/oil ratio.
By the grain size analysis, mean diameter after absorbing water has been approximately five times the volume of particles before absorbing water.
However, the number of the micropores largely decreased with the water/oil ratio increasing from 4% to 10%.This indicate that when more water is added, the surface coverage ratio of surfactant decrease and the interdroplet attractive interactions lead to fusion and mass exchange during inverse suspension polymerization.
SEM indicates the size and number of micropores largely decrease with the increase of the water/oil ratio.
Online since: April 2015
Authors: Hui Chen Yu, Cheng Li Dong, Ying Li
A number of creep rupture experiments of DZ125 alloy are carried out at 760oC, 850oC, 980oC and 1040oC.
This is mainly due to the presence of γ’-reinforced phase and further enhanced by aligning the grains along preferential direction using directionally solidification technique.
This is mainly due to the presence of γ’-reinforced phase and further enhanced by aligning the grains along preferential direction using directionally solidification technique.
Online since: January 2014
Authors: Yan Huang, Shao Hong Peng, Sha Liang, Jian Li, Mei Yu
In recent years, a large number of toxic and hazardous substances were discharged into environment because of the simple landfill and accumulation of vehivle dismantling waste.
Observation on the residue powder of two samples has revealed that the powder composition of Guangzhou sample is mainly composed by sediment while that of Qingdao sample are organics such as polymer materials, wood and a few glass and metal grains, which indicates that the content and distribution of material in those two samples vary greatly, though they are originally composed by the same materials,such as plastic, rubber and metals.
Observation on the residue powder of two samples has revealed that the powder composition of Guangzhou sample is mainly composed by sediment while that of Qingdao sample are organics such as polymer materials, wood and a few glass and metal grains, which indicates that the content and distribution of material in those two samples vary greatly, though they are originally composed by the same materials,such as plastic, rubber and metals.
Online since: June 2018
Authors: Dmytro Babets
Introduction
An important and one of the most challenging tasks in rock engineering and design is converting the considerable number of parameters estimated by field mapping, core drilling and laboratory testing into the underground structure model.
A substantial number of theoretical studies based on statistical analysis of rock strength were conducted since 1960th by Volkov (1960), Koyfman (1963), Sedrakian (1968), Rats (1968), Brady (1970) and others [3].
It is supposed that strength of such elements is close to zero and their number (nt) in a random sample depends on the distance between joints in the rock mass.
Experimental Studies The substantial number of laboratory tests was carried out by Author in National Mining University (Ukraine), AGH Krakow (Poland) and SIU Carbondale (USA).
A substantial effect of mineralogical composition and petrographic features (grain size, grain bindings, weathering, micro-cracking) on the results of compressive strength test is confirmed.
A substantial number of theoretical studies based on statistical analysis of rock strength were conducted since 1960th by Volkov (1960), Koyfman (1963), Sedrakian (1968), Rats (1968), Brady (1970) and others [3].
It is supposed that strength of such elements is close to zero and their number (nt) in a random sample depends on the distance between joints in the rock mass.
Experimental Studies The substantial number of laboratory tests was carried out by Author in National Mining University (Ukraine), AGH Krakow (Poland) and SIU Carbondale (USA).
A substantial effect of mineralogical composition and petrographic features (grain size, grain bindings, weathering, micro-cracking) on the results of compressive strength test is confirmed.