Dense growth of multiply-twinned star-shaped molybdenum particles by atmospheric H2/Ar microplasma jet

CrystEngComm ◽  
2009 ◽  
Vol 11 (9) ◽  
pp. 1940 ◽  
Author(s):  
Yoshiki Shimizu ◽  
Kenji Koga ◽  
Takeshi Sasaki ◽  
Naoto Koshizaki
Keyword(s):  
Molybdenum Particles

Simultaneous Independent Measurement of Splat Diameter and Cooling Time during Impact on a Substrate of Plasma Sprayed Molybdenum Particles

1997 ◽  
Author(s):  
P. Gougeon ◽  
C. Moreau
Keyword(s):  
High Speed ◽  
Thermal Emission ◽  
Particle Temperature ◽  
Cooling Time ◽  
Spray Parameters ◽  
Coating Structure ◽  
Molten Droplets ◽  
Plasma Sprayed ◽  
The Impact ◽  
Molybdenum Particles

Abstract In thermal spray processes, the coating structure is the result of flattening and cooling of molten droplets on the substrate. The study of the cooling time and evolution of the splat size during impact is then of the highest importance to understand the influence of the spray parameters and substrate characteristics on the coating structure. Measurement of particle temperature during impact requires the use of a high-speed 2-color pyrometer to collect the thermal emission of the particle during flattening. Simultaneous measurement of the splat size with this pyrometer is difficult since the size of the particle can change as it cools down. To measure the splat size independently, a new measurement technique has been developed. In this technique the splat size is measured from the attenuation of the radiation of a laser beam illuminating the particle during impact. Results are presented for plasma sprayed molybdenum particles impacting on a glass substrate at room temperature. It is shown that the molybdenum splat reaches its maximum extent about 2 microseconds after the impact. In this work, we show that this increase of the splat surface is followed by a phase during which the splat size decreases significantly during 2 to 3 microseconds.

A Study of 5%Mo-Cu Nanocomposite Prepared by SHS Route

2013 ◽  
Vol 675 ◽  
pp. 231-234
Author(s):  
Tie Ming Guo ◽  
Chang Song Han ◽  
Jian Gang Jia ◽  
Ying Fu ◽  
Zhi Hui ◽  
...  
Keyword(s):  
High Temperature ◽  
Electric Conductivity ◽  
Matrix Composite ◽  
Copper Matrix ◽  
Temperature Synthesis ◽  
Powder System ◽  
High Temperature Synthesis ◽  
Copper Matrix Composite ◽  
Microhardness Tester ◽  
Molybdenum Particles

Thermodynamic calculations indicate that molybdenum particles reinforced copper-matrix composite can be fabricated in CuO-Al-MoO3 powder system. Thermit reaction and self-propagation high-temperature synthesis (SHS) were applied to prepare samples. Then the phases, structure morphologies and properties were studied through the instruments of XRD, SEM and microhardness tester. The results show that nanocrystals are formed in Cu matrix and molybdenum particles are dispersive distributed in Cu matrix. The microhardness of 5﹪Mo-Cu nanocomposite is 110HV，and the relative electric conductivity is 58.6﹪IACS.

Effect of molybdenum particles on thermal and mechanical properties of graphite flake/copper composites

Carbon ◽  
2020 ◽  
Vol 161 ◽  
pp. 169-180 ◽  
Author(s):  
Qianyue Cui ◽  
Cunguang Chen ◽  
Chengwei Yu ◽  
Tianxing Lu ◽  
Haiming Long ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphite Flake ◽  
Thermal And Mechanical Properties ◽  
Molybdenum Particles

Carbon nanotubes containing iron and molybdenum particles as a catalyst for methane decomposition

Carbon ◽  
2003 ◽  
Vol 41 (4) ◽  
pp. 846-848 ◽  
Author(s):  
Weizhong Qian ◽  
Tang Liu ◽  
Fei Wei ◽  
Zhanwen Wang ◽  
Hao Yu
Keyword(s):  
Carbon Nanotubes ◽  
Methane Decomposition ◽  
Molybdenum Particles

Production of uranium–molybdenum particles by spark-erosion

2004 ◽  
Vol 324 (1) ◽  
pp. 1-5 ◽  
Author(s):  
E.D. Cabanillas ◽  
M. López ◽  
E.E. Pasqualini ◽  
D.J. Cirilo Lombardo
Keyword(s):  
Spark Erosion ◽  
Molybdenum Particles

Analysis of the morphology and the optical properties of sputtered molybdenum particles

1995 ◽  
Vol 353 (5-8) ◽  
pp. 713-717 ◽  
Author(s):  
R. Joerger ◽  
K. Forcht ◽  
A. Gombert ◽  
W. Graf ◽  
A. Heinzel ◽  
...  
Keyword(s):  
Optical Properties ◽  
Molybdenum Particles

Self-Arrangement of Molybdenum Particles into Cubes

Science ◽  
1991 ◽  
Vol 251 (5001) ◽  
pp. 1590-1592 ◽  
Author(s):  
A. S. EDELSTEIN ◽  
G. M. CHOW ◽  
E. I. ALTMAN ◽  
R. J. COLTON ◽  
D. M. HWANG
Keyword(s):  
Molybdenum Particles
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