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Online since: September 2009
Authors: Maria J. Mosquera, Desireé M. de los Santos, Teresa Rivas, Patricia Sanmartín, Benita Silva
This stone is yellow-cream coloured sandstone with a
composition exceeding 50% of micritic calcite cement and rounded quartz and feldspar grains as
clastic components.
In the case of granite, 80% of pores showed pore size ranging from 1 to 10 µm and we observed that the two products significantly reduce the number of pores in this size range.
In addition, numerous bridges linking the grains of quartz together were observed for stone treated with UCA-1 (see Fig. 7).
In the case of granite, 80% of pores showed pore size ranging from 1 to 10 µm and we observed that the two products significantly reduce the number of pores in this size range.
In addition, numerous bridges linking the grains of quartz together were observed for stone treated with UCA-1 (see Fig. 7).
Online since: June 2013
Authors: Thomas Antretter, Hans Peter Gänser, Markus Orthaber
The
numbers 1 − 24 denote the doubled slip systems of an fcc crystal, where 13 − 24 are the negative
directions of slip systems 1 − 12.
The polycrystal itself consists of 8 grains with random crystallographic orientations shown in fig. 3.
The stress-strain curve averaged over all integration points lying inside a specific polycrystal grain is shown.
The polycrystal itself consists of 8 grains with random crystallographic orientations shown in fig. 3.
The stress-strain curve averaged over all integration points lying inside a specific polycrystal grain is shown.
Online since: August 2004
Authors: A. Terlain, Gerard Picard, Fanny Balbaud-Célérier, Laure Martinelli, A. Ngomsik, S. Sanchez
%Bi) appears to be a good
candidate, due to its high atomic number, low melting point (125 °C), fast heat removal from the
target, good neutron yield and low vapour pressure.
Corrosion by liquid metals Liquid metal corrosion can proceed by various processes: dissolution, formation of intermetallic compounds, penetration of liquid metal along grain boundaries.
In all cases, dissolution of the samples occurred and their surfaces were uniformly attacked with some penetrations initiated at the grain boundaries (Fig. 2).
Corrosion by liquid metals Liquid metal corrosion can proceed by various processes: dissolution, formation of intermetallic compounds, penetration of liquid metal along grain boundaries.
In all cases, dissolution of the samples occurred and their surfaces were uniformly attacked with some penetrations initiated at the grain boundaries (Fig. 2).
Online since: August 2005
Authors: Keizo Takeuchi, Katsutoshi Tanaka, Y. Tanaka, Shinichi Ninomiya, Tetsutaro Uematsu, Kiyoshi Suzuki, Manabu Iwai
Trial Manufacturing of Electrically Conductive Diamond Grits
Boron doped electrically conductive diamond grits (BDD-S, grain size: 120/140 US mesh) were trial
manufactured by a special technique.
Surface plunge grinding of optical glass (BK7, l=100mm) was performed under the (a) Boron doped EC diamond (BDD-S) (b) Normal diamond (PDA768) Fig. 2 Appearance of diamond abrasives Table 2 Experimental devices and grinding conditions Grinder NC surface grinder (NSP-50, Nachi) Grinding wheel ·Electrically conductive diamond grits wheel: SDE120Q80M Abrasive: EC diamond (BDD-S, 120/140 US mesh) ·Normal (non-EC) diamond grits wheel: SD120Q80M Abrasive: Normal diamond (PDA768, Element Six) Straight type wheel (1A1), φ100×t5mm Trueing / Dressing Brake type truer: C100 / WA stick stone: WA400 Vs=630m/min, Vf=2m/min, a=10, 20µm/pass Workpiece Optical glass: BK7, 100mm×100mm×20mm Grinding condition Vs=1570m/min (N=5000rpm), Vw=5m/min, a=10, 40µm/pass, b=3mm, Surface plunge grinding Coolant Synthetic (Syntilo GX, 2%, BP), Flow rate: 6 l /min conditions - wheel speed of Vs=1570m/min (rotation number of N=5000rpm), feed
In the ED trueing test, a small diameter disc wheel sintered with bronze powder and containing diamond grains (50~100µm) which were crushed from EC CVD diamond thick film was used.
Surface plunge grinding of optical glass (BK7, l=100mm) was performed under the (a) Boron doped EC diamond (BDD-S) (b) Normal diamond (PDA768) Fig. 2 Appearance of diamond abrasives Table 2 Experimental devices and grinding conditions Grinder NC surface grinder (NSP-50, Nachi) Grinding wheel ·Electrically conductive diamond grits wheel: SDE120Q80M Abrasive: EC diamond (BDD-S, 120/140 US mesh) ·Normal (non-EC) diamond grits wheel: SD120Q80M Abrasive: Normal diamond (PDA768, Element Six) Straight type wheel (1A1), φ100×t5mm Trueing / Dressing Brake type truer: C100 / WA stick stone: WA400 Vs=630m/min, Vf=2m/min, a=10, 20µm/pass Workpiece Optical glass: BK7, 100mm×100mm×20mm Grinding condition Vs=1570m/min (N=5000rpm), Vw=5m/min, a=10, 40µm/pass, b=3mm, Surface plunge grinding Coolant Synthetic (Syntilo GX, 2%, BP), Flow rate: 6 l /min conditions - wheel speed of Vs=1570m/min (rotation number of N=5000rpm), feed
In the ED trueing test, a small diameter disc wheel sintered with bronze powder and containing diamond grains (50~100µm) which were crushed from EC CVD diamond thick film was used.
Online since: September 2005
Authors: Paul van Houtte, Tohru Yamasaki, Takayuki Takasugi, Günter Gottstein, Hirofumi Inoue
A number of pieces with a size of 3
mm in the RD and 25 mm in the transverse direction (TD) were cut out from a sheet material.
This may be due to the pinning effect by fine Al-Mn-(Si) precipitates, because pancake-like grains were observed in a Mn added alloy while equiaxed grains in a standard alloy.
This may be due to the pinning effect by fine Al-Mn-(Si) precipitates, because pancake-like grains were observed in a Mn added alloy while equiaxed grains in a standard alloy.
Online since: March 2011
Authors: Norhamidi Muhamad, Abu Bakar Sulong, Heng Shye Yunn
WC–8%Co (grain size =3.2 µm) with an improved wax-based multi-component binder achieved powder loading 65%, the transverse rupture strength, hardness, coercivity and density of the as sintered specimens were 2500 MPa, HRA 90, 8.95 KaM-1 and 14.72 gcm-3 respectively [37].
Moldflow Plastic Insight (MPI) has been used to predict the mold filling in micro channel array and does modification in part design help to decrease the number of defects [4].
Petersson and Agren [52] developed model can be used to represent shrinkage rate was devised based on constitutive relations for uniaxial viscosity, viscous equivalent of Poisson’s ratio and sintering stress. and should be a useful tool when investigating the effects of temperature cycle, grain size and binder fraction in WC–Co sintering.
Moldflow Plastic Insight (MPI) has been used to predict the mold filling in micro channel array and does modification in part design help to decrease the number of defects [4].
Petersson and Agren [52] developed model can be used to represent shrinkage rate was devised based on constitutive relations for uniaxial viscosity, viscous equivalent of Poisson’s ratio and sintering stress. and should be a useful tool when investigating the effects of temperature cycle, grain size and binder fraction in WC–Co sintering.
Online since: June 2022
Authors: Yuriy Sharkeev, Natalya Saprykina, Egor Ibragimov, Alexandr Saprykin, Margarita Khimich, Alexey Saprykin
A significant number of papers are devoted to determining the conditions of laser fusion required to obtain the samples from CoCrMo alloy powder [2].
As it is known, formation of a two-phase epsilon-gamma state in combination with a small grain size makes it possible to improve the deformation behavior of the alloy [20].
Lopez Strain induced ε-martensite in a Co–Cr–Mo alloy: grain size effects.
As it is known, formation of a two-phase epsilon-gamma state in combination with a small grain size makes it possible to improve the deformation behavior of the alloy [20].
Lopez Strain induced ε-martensite in a Co–Cr–Mo alloy: grain size effects.
Online since: September 2021
Authors: Kavitha Vijeandran, Tu Anh Vu Thanh
A small and similar size square of the SCOBY was distributed into a replicate container in a way that all the squares from one row were for one treatment, and all the squares from one column were distributed to the same numbered replicate in each treatment.
However, analyses of physical properties (e.g. tensile strength, percent elongation at break, tear strength, and grain crack strength, hydrothermal stability, softness and grain structures) are required to prove comparative characteristics and quality of the vegan leather to the ordinary leather.
However, analyses of physical properties (e.g. tensile strength, percent elongation at break, tear strength, and grain crack strength, hydrothermal stability, softness and grain structures) are required to prove comparative characteristics and quality of the vegan leather to the ordinary leather.
Online since: April 2022
Authors: Adebayo T. Ogundipe, Olamilekan R. Oloyede, Omolola O. Yusuf, Sunday Adeniran Afolalu, Omolayo M. Ikumapayi
Not only is their production easy and cost-effective, but their composition also makes them highly functional, hydrophobic, and a number of them are resistant to chemical corrosion.
Figure 8 exhibits a flaky and dendritic surface with more plentiful and separated grains than the glycerol-plasticized mixture.
At the same magnification, the grains in the palm oil-plasticized blend are larger and more put together and fewer.
Figure 8 exhibits a flaky and dendritic surface with more plentiful and separated grains than the glycerol-plasticized mixture.
At the same magnification, the grains in the palm oil-plasticized blend are larger and more put together and fewer.
Online since: October 2015
Authors: Said Kenai, Belkacem Lamri, Cumaraswamy Vipulanandan, Abdelkader Zerrouk
Table 1: Properties of bentonite
Type of sample
LL%
PL%
Gs
γdry
O.M.C%
Remodeled
324
43
2.66
11.45
38.1
Sand (S)
The grain size distribution of the sand used in this control study is shown in Fig. 1.
The coefficient of uniformity (Cu) for the sand was 2.6 while it`s D50 was 0.6 mm Fig 1: Grain size distribution for sand, cement and bentonite Hair fiber The lightweight, strength and deformation properties of fibers make them effective materials in various construction engineering applications.
Journal of Green Building Volume 6, Number 2 pp88-106 [11].
The coefficient of uniformity (Cu) for the sand was 2.6 while it`s D50 was 0.6 mm Fig 1: Grain size distribution for sand, cement and bentonite Hair fiber The lightweight, strength and deformation properties of fibers make them effective materials in various construction engineering applications.
Journal of Green Building Volume 6, Number 2 pp88-106 [11].