Effect of crystal shape and size on the plastic deformation of?-SiC

1976 ◽  
Vol 15 (6) ◽  
pp. 465-468
Author(s):  
I. N. Frantsevich ◽  
V. A. Kravets ◽  
K. V. Nazarenko
Keyword(s):  
Plastic Deformation ◽  
Crystal Shape ◽  
Shape And Size

Simultaneous prediction of crystal shape and size for solution crystallization

AIChE Journal ◽  
2004 ◽  
Vol 50 (9) ◽  
pp. 2101-2112 ◽  
Author(s):  
Yongchun Zhang ◽  
Michael F. Doherty
Keyword(s):  
Crystal Shape ◽  
Solution Crystallization ◽  
Simultaneous Prediction ◽  
Shape And Size

Novel Molten Salt Assisted Autocombustion Method for the Synthesis of Aluminum-Doped SrFe12−xAlxO19 Hexaferrite Nanoparticles

2020 ◽  
Vol 20 (12) ◽  
pp. 7735-7742
Author(s):  
T. P. Poudel ◽  
D. Guragain ◽  
J. Mohapatra ◽  
J. P. Liu ◽  
S. R. Mishra
Keyword(s):  
Magnetic Properties ◽  
Molten Salt ◽  
Grain Growth ◽  
Growth Process ◽  
High Coercivity ◽  
Crystal Shape ◽  
Squareness Ratio ◽  
Highly Dispersed ◽  
Novel Method ◽  
Shape And Size

The study presents a novel molten salt assisted autocombustion synthesis of SrFe12−xAlxO19 particles. The extrinsic magnetic properties such as coercivity and the remanence of sintered M-type ferrites are highly dependent on the microstructure viz. morphology and size, of the ferrite particles. The control of the microstructures of ferrite particles is usually achieved via control nucleation and grain growth process. In this study, NaCl salt was used to control the crystal shape and size of Al3+ doped SrFe12−xAlxO19 particles. The presented novel method couples advantage of deriving homogenized particles via auctocombustion first and later sintering in the presence of NaCl salt. Highly dispersed, homogeneous, and hexagonal shaped SrFe12−xAlxO19 ferrite particles were achieved with this method. The particles derived via the molten salt assisted method presented a high coercivity and squareness ratio (>0.5) as compared to that obtained via autocombustion method only.

Dependence of the solid-state photomechanical response of 4-chlorocinnamic acid on crystal shape and size

CrystEngComm ◽  
2012 ◽  
Vol 14 (22) ◽  
pp. 7792 ◽  
Author(s):  
Taehyung Kim ◽  
Lingchao Zhu ◽  
Leonard J. Mueller ◽  
Christopher J. Bardeen
Keyword(s):  
Solid State ◽  
Crystal Shape ◽  
Shape And Size

Supercritical hydrothermal synthesis of UO2+x: stoichiometry, crystal shape and size, and homogeneity observed using 23Na-NMR spectroscopy of (U, Na)O2+x

CrystEngComm ◽  
2021 ◽  
Author(s):  
Chihiro Tabata ◽  
Kenji Shirasaki ◽  
Ayaki Sunaga ◽  
Hironori Sakai ◽  
Dexin Li ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Nmr Spectroscopy ◽  
Supercritical Water ◽  
Uranium Dioxide ◽  
Nitrate Solution ◽  
Starting Material ◽  
Crystal Shape ◽  
Supercritical Hydrothermal Synthesis ◽  
23Na Nmr ◽  
Shape And Size

The hydrothermal synthesis of pure uranium dioxide under supercritical water (SCW) conditions was investigated using a starting material composed of a uranyl(vi) nitrate solution at 450 °C.

scholarly journals Constructive and technological method of increasing durability of “choke connections”

2021 ◽  
Vol 2131 (4) ◽  
pp. 042061
Author(s):  
Y G Lyudmirskii ◽  
S S Assaulenko ◽  
S O Ageev
Keyword(s):  
Plastic Deformation ◽  
Base Metal ◽  
Strain State ◽  
Low Cycle Fatigue ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
Cycle Fatigue ◽  
Static Loads ◽  
Maintenance System ◽  
Shape And Size

Abstract Welded circular seams of “choke joints”, as a rule, have deviations from the specified diameter. This leads to uneven deformation, and sometimes to the absence of deformations in some areas of the seam. With repeated static loads, destruction arises in these places. To connect to the maintenance system of connections with the base metal, used as a guide, surface plastic deformation of the zone zone is carried out. A technology and equipment have been developed that allow plastically deforming the area of transition from the weld to the base metal along the entire length of the circular weld. As a result of plastic deformation along the technological groove, the characteristics of low-cycle fatigue of welded joints are obtained, which are not inferior to the base metal. To reduce stresses in the zone of transition from the weld to the base metal, it is proposed, first, to perform a circular groove on the base metal by machining, as close as possible to the specified zone. To assess the influence of the shape and size of the groove on the stress-strain state of the zone of conjugation of the weld metal with the base metal, FEM calculations were carried out

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