Fine crystal structure of iron powders alloyed with chromium

1970 ◽  
Vol 9 (8) ◽  
pp. 691-694
Author(s):  
M. P. Arbuzov ◽  
O. A. Zaichuk ◽  
I. D. Radomysel'skii
Keyword(s):  
Crystal Structure ◽  
Fine Crystal ◽  
Iron Powders ◽  
Fine Crystal Structure

High-strength carbon steels with hereditary fine crystal structure. IV. Some traits of the structure forming processes in the heat treatment of powdered carbon steels

1987 ◽  
Vol 26 (4) ◽  
pp. 339-345
Author(s):  
I. D. Radomysel'skii ◽  
A. I. Dzyubenko ◽  
A. P. Lyapunov ◽  
A. S. Drachinskii ◽  
Yu. N. Podrezov ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Heat Treatment ◽  
High Strength ◽  
Carbon Steels ◽  
Fine Crystal ◽  
Powdered Carbon ◽  
Fine Crystal Structure

Fine crystal structure of porous corundum ceramics

2011 ◽  
Vol 53 (12) ◽  
pp. 1305-1311 ◽  
Author(s):  
M. V. Grigoriev ◽  
S. N. Kulkov
Keyword(s):  
Crystal Structure ◽  
Fine Crystal ◽  
Fine Crystal Structure

Fine crystal structure of the surface layer of steel hardened with rollers

1966 ◽  
Vol 8 (3) ◽  
pp. 188-190 ◽  
Author(s):  
M. E. Blanter ◽  
M. G. Gasanov ◽  
N. A. Gulyaeva
Keyword(s):  
Crystal Structure ◽  
Surface Layer ◽  
Fine Crystal ◽  
Fine Crystal Structure

The formation of fine crystal structure during cold milling of gear wheels

1969 ◽  
Vol 11 (3) ◽  
pp. 223-225
Author(s):  
V. M. Yanko ◽  
G. P. Mostalygin
Keyword(s):  
Crystal Structure ◽  
Fine Crystal ◽  
Fine Crystal Structure ◽  
Gear Wheels

Study of phase composition and parameters of fine crystal structure of gradient ceramics based on ZrO2

2015 ◽  
Author(s):  
Ekaterina S. Shutilova ◽  
Svetlana P. Buyakova ◽  
Sergei N. Kulkov
Keyword(s):  
Crystal Structure ◽  
Phase Composition ◽  
Fine Crystal ◽  
Fine Crystal Structure

Fine crystal structure of electrolytic iron deposits obtained under various electrolysis conditions

1969 ◽  
Vol 12 (2) ◽  
pp. 165-168
Author(s):  
M. P. Arbuzov ◽  
E. S. Bushuev ◽  
A. L. Leontovich
Keyword(s):  
Crystal Structure ◽  
Electrolytic Iron ◽  
Fine Crystal ◽  
Fine Crystal Structure ◽  
Iron Deposits

Changes in the fine crystal structure of high-strength cast irons during lubricated friction

1967 ◽  
Vol 2 (2) ◽  
pp. 159-161
Author(s):  
L. I. Markovskaya ◽  
E. A. Markovskii ◽  
V. G. Chernyi
Keyword(s):  
Crystal Structure ◽  
High Strength ◽  
Cast Irons ◽  
Fine Crystal ◽  
Fine Crystal Structure

High-strength carbon steels with hereditary fine crystal structure I. The effect of vibrogrinding on the parameters of the fine structure of iron powder particles

1986 ◽  
Vol 25 (6) ◽  
pp. 483-487 ◽  
Author(s):  
I. D. Radomysel'skii ◽  
A. I. Dzyubenko ◽  
A. P. Lyapunov ◽  
A. A. Mamonova
Keyword(s):  
Crystal Structure ◽  
Fine Structure ◽  
Iron Powder ◽  
High Strength ◽  
Carbon Steels ◽  
Fine Crystal ◽  
Fine Crystal Structure ◽  
Powder Particles

Low energy mechanical treatment of non-stoichiometric titanium carbide powder

2021 ◽  
Vol 23 (3) ◽  
pp. 112-123
Author(s):  
Tatyana Sablina ◽  
◽  
Irina Sevostyanova ◽  
◽  
Keyword(s):  
Crystal Structure ◽  
Titanium Carbide ◽  
Crystal Lattice ◽  
Ball Mill ◽  
Mechanical Treatment ◽  
Low Energy ◽  
Carbide Powder ◽  
Fine Crystal ◽  
Fine Crystal Structure ◽  
Powder Particles

Introduction. The practical significance of non-stoichiometric titanium carbides TiCх in various fields of technology and in medicine is expanding. In this regard, it is important to investigate both methods of obtaining titanium carbide powder and its properties in a wide range of stoichiometry. One of the effective ways to influence the physical and mechanical properties of powder systems is its mechanical treatment. Under shock-shear action, which is realized during processing in a ball mill, mechanical energy is transferred to the powder system, as a result of which it is ground, centers with increased activity on newly formed surfaces are formed; phase transformations, crystal lattice deformation, amorphization, formation of defects, etc. are possible. The aim of this work is to study the effect of low-energy mechanical treatment in a ball mill on the structure, phase composition and parameters of the fine crystal structure of non-stoichiometric titanium carbide powder obtained by reduction of titanium oxide with carbon and calcium. Materials and methods. Powder of titanium carbide TiC, obtained by calcium carbonization of titanium oxide was investigated. The powder was treated in a drum type ball mill. The structure of the powders before and after treatment was studied using the Philips SEM 515 scanning electron microscope. The specific surface area was determined by the BET method. The phase composition and parameters of the fine crystal structure of powder materials were investigated by X-ray analyzes. Results and discussion. It was established that an increase of the time of mechanical treatment in a ball mill of a non-stoichiometric titanium carbide powder TiC0.7 leads to an increase in the specific surface area of the powder from 0.6 to 3.4 m2 / g, and the average particle size calculated from it decreases from 2 μm to 360 nm. It is shown that in the process of treatment of the non-stoichiometric titanium carbide TiC0.7 powder, its structural phase state changes. Powder particles consist of two structural components with different atomic ratio of carbon to titanium: TiC0.65 and TiC0.48. Mechanical treatment of titanium carbide powder leads to a decrease in the microstresses of the TiCx crystal lattice and the size of coherently diffracting domains (CDD) from 55 to 30 nm for the TiC0.48 phase. For the TiC0.65 phase, with an increase in the duration of mechanical treatment, as well as for TiC0.48, the size of CDD decreases, and the level of microdistortions of the crystal lattice increases. This indicates that in the process of mechanical treatment, not only the grinding of powder particles occurs, but also an increase in its defects.

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