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Online since: July 2012
Authors: Qing Cui Wan, Chun Yan Luan, Xue Qing Xu, Feng Jiao Mei, Pin An, Gang Xu
The obtained samples were named as InaCub, where a and b represented the number of deposition cycles of In-S and Cu-S.
With the temperature increased to 550 oC, the peak at 27.87 o and 46.44o and 55.08 o gradually became stronger, indicating that both the crystallinity and the grain size of the CuInS2 nanoparticles increased.
With the temperature increased to 550 oC, the peak at 27.87 o and 46.44o and 55.08 o gradually became stronger, indicating that both the crystallinity and the grain size of the CuInS2 nanoparticles increased.
Online since: October 2011
Authors: Argyrios Kasioptas, Veronica Sandell, Eva Lidén, Oskar Börjesson, Malin Nilsson
Fig. 2 shows the interconnected apatite structure (present mainly on the left part of the image, consisting of merged plate−like apatite granules) which is surrounding, most likely, a remaining un−reacted α−TCP grain.
Kasioptas acknowledges funding from the European Marie Curie Initial Training Network, “SpineFX”, with project number 238690 (European Commission).
Kasioptas acknowledges funding from the European Marie Curie Initial Training Network, “SpineFX”, with project number 238690 (European Commission).
Online since: November 2013
Authors: Milad Ghayoor Baghbani, Ali Mohamad Hadian
Fusion welding of particle-reinforced AlMMC is associated with number of difficulties, such as high viscosity of melt, segregation effects on re-solidification, evolution of occluded gases causing extensive cracking in the heat affected zone and weld porosity, and particle/matrix reaction producing detrimental intermetallic compound.
ISZ BM ISZ ASZ (a) (b) (c) (d) Fig. 1 Optical micrographs of bonded specimens at central region of bond interface: a) 30 min; b) 1 h; c) 2 h; d) 5 h Fig. 1 shows the isothermally solidified zone containing the grains of isothermally solidified α adjacent to the athermally solidified zone.
ISZ BM ISZ ASZ (a) (b) (c) (d) Fig. 1 Optical micrographs of bonded specimens at central region of bond interface: a) 30 min; b) 1 h; c) 2 h; d) 5 h Fig. 1 shows the isothermally solidified zone containing the grains of isothermally solidified α adjacent to the athermally solidified zone.
Online since: December 2014
Authors: Carlos Henrique Ataíde, Cássia Regina Cardoso, Tiago José Pires de Oliveira
According to [6], soybean hulls represent 2% (weight) of the total grain and it is an available material in the Brazilian market due to the high production of soybean in Brazil.
The aromatic compounds, like olefins, have good octane numbers, but tend to be more toxic and some countries have specific regulations for certain compounds, for example, benzene.
The aromatic compounds, like olefins, have good octane numbers, but tend to be more toxic and some countries have specific regulations for certain compounds, for example, benzene.
Online since: August 2013
Authors: Dan Sun, Tie Zhi Zhang, Li Jiu Wang
Tail ore contains a large number of active substances such as iron and calcium, according to the content of associated elements, iron tailings resources in our country can be divided into the single metal iron tailings and polymetallic iron tailings. iron calcium chemical composition was activated By choosing appropriate stable materials (or material combination), which can effectively improve the strength of the tail ore mixture [3].
In 2006, Anshan mining design institute and Angang construction company jointly studied on the concrete of iron tailings replacing river sand, the concrete strength reached C35 strength grade, which laid the foundation for iron tailings applied to concrete pavement [6]. the grain size of iron tailings bigger than 0.074 mm is more than 70%,iron tailings is equivalent to the fine sand,the iron tailings mixed 20% of low liquid limit clay meets the requirements of iron tailings as subgrade filling.
In 2006, Anshan mining design institute and Angang construction company jointly studied on the concrete of iron tailings replacing river sand, the concrete strength reached C35 strength grade, which laid the foundation for iron tailings applied to concrete pavement [6]. the grain size of iron tailings bigger than 0.074 mm is more than 70%,iron tailings is equivalent to the fine sand,the iron tailings mixed 20% of low liquid limit clay meets the requirements of iron tailings as subgrade filling.
Online since: December 2012
Authors: Ping Zhang, Ru Gang Zhong, Hai Xin Cui
The main effective components in nano-TiO2 sol were anatase nano-TiO2 particles and which contents were 1.4% and average grain size was 30.6 nm.
Control efficiencies of nano-TiO2 sol to Sphaerotheca fuliginea (Leaves in the a and b were sprayed with nano-TiO2 sol, c and d was blank control treatment) 3.2 Phytotoxicity analysis of nano-TiO2 sol to cucumber seedlings Comparing to blank control, cucumber plants were growing normally and no evidence of growth repression, chlorosis and deformity was observed when treated with nano-TiO2 sol, and cucumber plant heights, leaf numbers and productions increased slightly, but not reached significant differences (Statistic data did not listed.).
Control efficiencies of nano-TiO2 sol to Sphaerotheca fuliginea (Leaves in the a and b were sprayed with nano-TiO2 sol, c and d was blank control treatment) 3.2 Phytotoxicity analysis of nano-TiO2 sol to cucumber seedlings Comparing to blank control, cucumber plants were growing normally and no evidence of growth repression, chlorosis and deformity was observed when treated with nano-TiO2 sol, and cucumber plant heights, leaf numbers and productions increased slightly, but not reached significant differences (Statistic data did not listed.).
Online since: January 2013
Authors: Noureddine Barka, Abderrazak El Ouafi, Philippe Bocher, Jean Brousseau, Ahmed Chebak
Table 4 presents the simulation results and experiments that clearly demonstrate that these ratios are very useful and it is not required to make an excessive number of tests to validate the simulation.
[8] J.B.Leblond and J.C.Devaux,A new kinetic model for anisothermal transformation metallurgical transformations in steel including effect of austenite grain size, Acta Met., No.32, 1, p.146, 1984
[8] J.B.Leblond and J.C.Devaux,A new kinetic model for anisothermal transformation metallurgical transformations in steel including effect of austenite grain size, Acta Met., No.32, 1, p.146, 1984
Online since: February 2019
Authors: Oleg V. Zayakin, Ilia N. Kel'
A large number of studies have been performed on the properties of decaying highly basic slags and their practical use.
Changing of the thermal and time conditions for the crystallization of oxide melts − the physical slowdown of the 2CaO×SiO2 transition into a decaying γ-form can occur due to the formation of a glass-like or other film around the 2CaO×SiO2 grains.
Changing of the thermal and time conditions for the crystallization of oxide melts − the physical slowdown of the 2CaO×SiO2 transition into a decaying γ-form can occur due to the formation of a glass-like or other film around the 2CaO×SiO2 grains.
Online since: September 2016
Authors: A. Varun Kumar, M. Balasrinivasan, Mohamed Dulkiflee
The variations in the hardness values are due to the grain boundary behaviour of parent material [10].
Table 5 Microhardness values Tool speed (rpm) Traverse speed (mm/min) Axial force (constant for all the trials) Microhardness value (HV) 1000 50 8 KN 131 80 116 100 108 1250 50 135 80 129 100 105 1500 50 141 80 132 100 101 Grey Relational Analysis and Taguchi Orthogonal Array In this experiment the process parameters were designed based on L9 orthogonal array from the Taguchi’s orthogonal array selector which depends on the number of parameters and levels involved, which is a primary tool to reduce the multi response parameters to a minimal range to get the maximum output from the experiments.
Table 5 Microhardness values Tool speed (rpm) Traverse speed (mm/min) Axial force (constant for all the trials) Microhardness value (HV) 1000 50 8 KN 131 80 116 100 108 1250 50 135 80 129 100 105 1500 50 141 80 132 100 101 Grey Relational Analysis and Taguchi Orthogonal Array In this experiment the process parameters were designed based on L9 orthogonal array from the Taguchi’s orthogonal array selector which depends on the number of parameters and levels involved, which is a primary tool to reduce the multi response parameters to a minimal range to get the maximum output from the experiments.