Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: January 2012
Authors: R. Roohibakhsh, Hekmat Razavizadeh, Hamid Reza Rezaie
In general, the calcined powders have agglomerated and increasing the nickel content result in further agglomeration because of the magnetic properties of ultra fine nickel grains which lead to particles attraction.
Ogata, Production of Copper Powder (United States Patent, Patent Number: 5,850,047, 1998)
Ogata, Production of Copper Powder (United States Patent, Patent Number: 5,850,047, 1998)
Online since: April 2008
Authors: Ming Jia Wang, Shan Shan Long, Song Mei Mu, Yan Wang, Lei Chen
The addition of molybdenum to stainless steel slightly increases the hot
deformation stress and recrystallization temperature, while reduces the efficiency of power
dissipation η.
1 Introduction
Major technical equipment in modern installations typically comprise a large number of stainless
steel structures, which in some instances, especially in the case of coolant systems in nuclear power
plants, are necessarily forged at high-temperature, with the intention of improving the mechanical
properties and corrosion resistance.
Microstructures can be divided into work hardening (Figures 6a, b), partial recrystallization (Figures 6c, d), complete recrystallization (Figures 6e, f), and grain growth (Figures 6g, h).
Microstructures can be divided into work hardening (Figures 6a, b), partial recrystallization (Figures 6c, d), complete recrystallization (Figures 6e, f), and grain growth (Figures 6g, h).
Online since: June 2009
Authors: Bulent Tiryaki, Ian D. Gipps, Xing Sheng Li
These rocks behave
differently from the rest of the data set probably because they are all argillaceous rocks that have
the smallest average grain size amongst the rocks studied by [8].
Number of hidden neurons in the hidden layer have been selected as 20.
Number of hidden neurons in the hidden layer have been selected as 20.
Online since: July 2025
Authors: I Gde Budi Indrawan, Mercy Agape Tappang, Donatus Hendra Amijaya, Desdurisa Hilmi Kunindra
According to Indonesian National Standard Numbers 03-3637-1994 [10] and ASTM-2825 [11], index characteristics and uniaxial compressive strength were tested.
Supriatna, Peta Geologi Lembar Ujungpandang,Bantaeng dan Sinjai, Sulawesi, (1982) [9] ISRM I, Suggested methods for the quantitative description of discontinuities in rock masses In International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (1978) 15 319 [10] SNI 03-3637-1994, Method of Testing the Unit Weight of Fine-Grained Soil with the Test Object Mold (Indonesia: Public Works Research and Development Center) (1994) 4 [11] SNI 2825, The instruction of uniaxial compressive strength test for rock (Indonesia: Association of National Standardization) (2008) 8 [12] Bieniawski Z T, Engineering rock mass classifications a complete manual for engineers and geologists in mining, civil, and petroleum engineering (1989) 251 [13] Deere D U, Hendron A J, Patton, F D and Cording E J, Design of surface and near-surface construction in rock the 8th US symposium on rock mechanics (American Rock Mechanics Association) (1966) [14] Q.
Supriatna, Peta Geologi Lembar Ujungpandang,Bantaeng dan Sinjai, Sulawesi, (1982) [9] ISRM I, Suggested methods for the quantitative description of discontinuities in rock masses In International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (1978) 15 319 [10] SNI 03-3637-1994, Method of Testing the Unit Weight of Fine-Grained Soil with the Test Object Mold (Indonesia: Public Works Research and Development Center) (1994) 4 [11] SNI 2825, The instruction of uniaxial compressive strength test for rock (Indonesia: Association of National Standardization) (2008) 8 [12] Bieniawski Z T, Engineering rock mass classifications a complete manual for engineers and geologists in mining, civil, and petroleum engineering (1989) 251 [13] Deere D U, Hendron A J, Patton, F D and Cording E J, Design of surface and near-surface construction in rock the 8th US symposium on rock mechanics (American Rock Mechanics Association) (1966) [14] Q.
Online since: January 2012
Authors: Jian Bin Zhuang, Ming Lei Ding, De Dong Hu
During the rapid-growth stage, the slopes of mean sizes and number of revolutions with different initial L/S ratios were similar to one another.
2 Anti-agglomeration methods
2.1 methods in liquid phase
Ultrasonic dispersion.
Freeze-drying method has the advantage of accessing to the powder of high purity, good chemical homogeneity, the high degree of fineness, relatively concentrated particle size distribution, large specific surface area and good chemical activity, fine-grained and higher density.
Freeze-drying method has the advantage of accessing to the powder of high purity, good chemical homogeneity, the high degree of fineness, relatively concentrated particle size distribution, large specific surface area and good chemical activity, fine-grained and higher density.
Online since: March 2007
Authors: Yukio Makino, T. Yoshioka, H. Saito, Shoji Miyake, Saburo Sano, Jun Akedo
Capabilities of nano-structured
materials based on the rapid densification and suppression of grain growth has also been indicated
in the several oxide materials such as titania and zirconia.[4,5] In the present study, characteristics of MM heating and SPS processes are briefly discussed in
comparison with conventional heating method[1,6,7].
Fig.3 shows the observation of remarkable preferential orientation in the XRD peaks due to (004) and (105) planes and it is indicated that the degree of the preferential orientation is closely connected with the sintering temperature, pressure and the angle of crystallographic plane to the current direction in SPS Fig.2 Raman spectra of PZT raw powder and PZT films post-annealed by millimeter-wave and conventional heating method. 0 5000 10000 15000 20000 Intensity (arbitrary) 0 500 1000 1500 Wave number [cm -1] Millimeter-wave heating Conventional heating Raw powder Intensity (arbitrary) sintering.
Fig.3 shows the observation of remarkable preferential orientation in the XRD peaks due to (004) and (105) planes and it is indicated that the degree of the preferential orientation is closely connected with the sintering temperature, pressure and the angle of crystallographic plane to the current direction in SPS Fig.2 Raman spectra of PZT raw powder and PZT films post-annealed by millimeter-wave and conventional heating method. 0 5000 10000 15000 20000 Intensity (arbitrary) 0 500 1000 1500 Wave number [cm -1] Millimeter-wave heating Conventional heating Raw powder Intensity (arbitrary) sintering.
Online since: June 2010
Authors: Yong Xiang Zhao, Bing Yang
Brittleness and grain interface fracture of high Cr and
Cr-Mo cast steels can be controlled by moderate contents of aluminum and nitrogen elements plus
sustaining temperature out of 900~1200℃ range[6].
When these parameters are available, using the residual standard deviation, sr (having the value of 0.0579681), of Eq. (5) fitting into test data, the number, n, of paired test data of 273, and the sampling size, ns, of 7, the growth rates at arbitrary probabilistic P-C levels can be estimated as ( ) n snt � a Z � a � a sC P av CP 1 12 d d lg d d lg d d lg 1 rms +−+ − = − − ( )[ ] ( ) ( ) ∆−∆ −+ +−= R KK BZ AZAZ P P P -1 2 lg 1 1 av th, av 0.841 av ( ) ( ) ( )[ ]KKRZ R KK BZ PP ∆− −−− ∆−∆ + av IC, th,0.841 0.841 1lg1 -1 2 lg ( )[ ] ( ) n sntK KRZ sC P 1 12 1lg 1 0.841 IC, +−+∆− −− − (10) The above equation can be converted numerically as ( ) ( ) CPm CP CP CP CP R KK KK D � a − − ∆−∆ ∆− = − − − − 1 2 R-1 1 d d th IC (11) Combining the previous measurement for fatigue cracking
When these parameters are available, using the residual standard deviation, sr (having the value of 0.0579681), of Eq. (5) fitting into test data, the number, n, of paired test data of 273, and the sampling size, ns, of 7, the growth rates at arbitrary probabilistic P-C levels can be estimated as ( ) n snt � a Z � a � a sC P av CP 1 12 d d lg d d lg d d lg 1 rms +−+ − = − − ( )[ ] ( ) ( ) ∆−∆ −+ +−= R KK BZ AZAZ P P P -1 2 lg 1 1 av th, av 0.841 av ( ) ( ) ( )[ ]KKRZ R KK BZ PP ∆− −−− ∆−∆ + av IC, th,0.841 0.841 1lg1 -1 2 lg ( )[ ] ( ) n sntK KRZ sC P 1 12 1lg 1 0.841 IC, +−+∆− −− − (10) The above equation can be converted numerically as ( ) ( ) CPm CP CP CP CP R KK KK D � a − − ∆−∆ ∆− = − − − − 1 2 R-1 1 d d th IC (11) Combining the previous measurement for fatigue cracking
Online since: May 2010
Authors: Shu Dong Zhang, N.M. Yao, Y. Qin
The USDA Economic Research Service developed the BASELINE system, which includes a
large number of models and can be used to analyze and predict the changes of grain and the other
major agricultural products in production, consumption and price [4].
Online since: February 2018
Authors: Xiao Li Xi, Jia Peng Chen, Li Wen Ma, Ming Xing Cao
A number of the solutions used to recover valuable metals deposited in waste or spent catalysts are investigated and proposed by many metallurgists or chemists.
It can be found that the residue is mainly anatase TiO2, and the average grain size is about 10 nm according to the Scherrer equation, indicating that the structure of the supported TiO2 is not destroyed after the leaching.
It can be found that the residue is mainly anatase TiO2, and the average grain size is about 10 nm according to the Scherrer equation, indicating that the structure of the supported TiO2 is not destroyed after the leaching.