Analysis of the particle shape formation process in the centrifugal atomization of a melt jet

1984 ◽  
Vol 23 (1) ◽  
pp. 1-6 ◽  
Author(s):  
O. S. Nichiporenko ◽  
A. G. Tsipunov ◽  
Yu. F. Ternovoi
Keyword(s):  
Formation Process ◽  
Particle Shape ◽  
Centrifugal Atomization ◽  
Shape Formation

scholarly journals Analytical estimation of particle shape formation parameters in a plasma-chemical reactor

2016 ◽  
Vol 92 ◽  
pp. 01039
Author(s):  
Ilya A. Zhukov ◽  
Sergei S. Bondarchuk ◽  
Alexander S. Zhukov ◽  
Ivan S. Bondarchuk ◽  
Boris V. Borisov ◽  
...  
Keyword(s):  
Particle Shape ◽  
Chemical Reactor ◽  
Plasma Chemical ◽  
Plasma Chemical Reactor ◽  
Shape Formation ◽  
Analytical Estimation

scholarly journals Dissipation of Energy in an N-Shape Formation Process for Single Sinusoidal Sound Wave

1983 ◽  
Vol 22 (S3) ◽  
pp. 22 ◽  
Author(s):  
Akira Nakamura ◽  
Toshiaki Nakamura ◽  
Kazuo Kajitani
Keyword(s):  
Sound Wave ◽  
Formation Process ◽  
Dissipation Of Energy ◽  
Shape Formation

On the Origin of the Microscystalline Structure in Rapidly Solidified IN-100 Powder

1977 ◽  
Vol 35 ◽  
pp. 260-261
Author(s):  
J. M. Walsh ◽  
K. P. Gumz ◽  
J. C. Whittles ◽  
B. H. Kear
Keyword(s):  
The Other ◽  
Coarse Grained ◽  
Microcrystalline Structure ◽  
Routine Examination ◽  
Atomization Process ◽  
Centrifugal Atomization ◽  
Splat Quenching ◽  
Powder Particles ◽  
Dendritic Microstructures ◽  
Rapidly Solidified

During a routine examination of the microstructure of rapidly solidified IN-100 powder, produced by a newly-developed centrifugal atomization process1, essentially two distinct types of microstructure were identified. When a high melt superheat is maintained during atomization, the powder particles are predominantly coarse-grained, equiaxed or columnar, with distinctly dendritic microstructures, Figs, la and 4a. On the other hand, when the melt superheat is reduced by increasing the heat flow to the disc of the rotary atomizer, the powder particles are predominantly microcrystalline in character, with typically one dendrite per grain, Figs, lb and 4b. In what follows, evidence is presented that strongly supports the view that the unusual microcrystalline structure has its origin in dendrite erosion occurring in a 'mushy zone' of dynamic solidification on the disc of the rotary atomizer.The critical observations were made on atomized material that had undergone 'splat-quenching' on previously solidified, chilled substrate particles.

Formation process of periodic non-conservative antiphase boundary structure in L-Pd5Ce

1990 ◽  
Vol 48 (4) ◽  
pp. 162-163
Author(s):  
Masaru Itakura ◽  
Noriyuki Kuwano ◽  
Kensuke Oki
Keyword(s):  
Formation Process ◽  
Domain Size ◽  
Antiphase Boundary ◽  
Boundary Structure ◽  
Temperature Phase ◽  
Arc Melting ◽  
Iced Water ◽  
Antiphase Domains ◽  
Low Temperature Phase ◽  
Degree Of Order

The low temperature phase of Pd5Ce (L-Pd5Ce) has a one-dimensional long period superstructure (1D-LPS) derived from Ll2. The periodic antiphase boundaries (APBs) are parallel to (110) planes and have a shift vector of 1/2[110]. Hereafter, the indices are referred to the basic lattices of Ll2 As insertion of the APB causes a change in composition, such an APB is called “non-conservative”. Then, a domain size M depends upon the Ce concentration in the alloy. It was found that M increases also with temperature. The temperature dependency of M is attributed to a change of the degree of order within the antiphase domains. In this work, morphology of the non-conservative APBs is observed to clarify the formation process of the 1D-LPS.The alloy of Pd-16.7 at%Ce was prepared by arc melting in argon atmosphere. Disc specimens made from the alloy ingot were first held at 985 K for 260 ks and quenched in iced water to obtain the state of M=∞ or Ll2, followed by annealing for various lengths of time. The annealing temperature was 873 K where the equilibrium value for M is about 3 in unit of (110) lattice spacing of Ll2. Observation was carried out using microscopes JEM-2000FX, JEM-4000EX (HVEM Lab., Kyushu Univ.) and JEM-2000EX (Dept. of Mater. Sci. Tech., Kyushu Univ.).

Effect of mood on stereotype formation process

2004 ◽  
Author(s):  
Julia Braverman ◽  
David DeSteno
Keyword(s):  
Formation Process

Incidents That Hinder the Alliance-Formation Process in Counselor Trainees

2009 ◽  
Author(s):  
Jessica J. Nee ◽  
Jose F. Domene ◽  
Robinder P. Bedi
Keyword(s):  
Formation Process ◽  
Counselor Trainees ◽  
Alliance Formation
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