Electron Beam Coatings with SHS Composite Powders “TiC - Cast Iron Binder" Synthesized in Air

2016 ◽  
Vol 685 ◽  
pp. 695-699 ◽  
Author(s):  
Elena N. Korosteleva ◽  
Gennadii A. Pribytkov ◽  
Saltanat S. Kalambaeva ◽  
Victoria V. Korzhova ◽  
Vasiliy G. Durakov
Keyword(s):  
Wear Resistance ◽  
Electron Beam ◽  
Cast Iron ◽  
Abrasive Wear Resistance ◽  
Composite Powders ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Powder Content ◽  
Cast Iron Powder ◽  
Carbide Particles

The paper presents the result of studies of composite powders produced by self-propagating high temperature synthesis (SHS) in the reaction mixtures of titanium, carbon and high chrome cast iron, and electron-beam coatings based on them. It was found that the morphology and dispersion of titanium carbide particles in the SHS-product were determined by cast iron powder content in the reaction mixtures. The effect of content of the SHS powders on the characteristics of electron-beam coatings, including abrasive wear resistance of facing coatings was shown.

Structure and Properties of Electron-Beam Coatings, Overlaid of SHS Composite Powders "TiC – Ti", Synthesized in Air

2016 ◽  
Vol 685 ◽  
pp. 719-723 ◽  
Author(s):  
Maxim G. Krinitcyn ◽  
Gennadii A. Pribytkov ◽  
Vasiliy G. Durakov
Keyword(s):  
Electron Beam ◽  
High Temperature ◽  
Structure And Properties ◽  
Composite Powders ◽  
Temperature Synthesis ◽  
X Ray ◽  
High Temperature Synthesis ◽  
Different Content ◽  
Carbide Particles

A structure of Ti-TiC coatings with different content of titanium binder, overlaid of composite powders, which were obtained by self-propagating high-temperature synthesis, was investigated. The structure was studied by X-ray analysis and metallography. A size of the carbide particles in coatings, hardness of coatings and rate of wear were measured.

SHS-TiC Particle Reinforced Hardface Coating Prepared by Vacuum Cladding Process

2011 ◽  
Vol 418-420 ◽  
pp. 932-935
Author(s):  
Tao Lin ◽  
Fang Wen ◽  
Xiang Qing Liu ◽  
Zhi Meng Guo
Keyword(s):  
Wear Resistance ◽  
Unit Area ◽  
Steel Substrate ◽  
Plain Carbon Steel ◽  
Alkaline Condition ◽  
Vacuum Sintering ◽  
Composite Powders ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Tic Particle

A particle reinforced hardface coating was prepared by vacuum cladding process. Firstly, titanium carbide composite powders were prepared by self-propagating high-temperature synthesis (SHS). The hardface coating was then formed on plain carbon steel substrate with the TiC composite powders and high chromium iron-based alloy powders by vacuum sintering. The microstructure of the coating was observed and then the wear resistance was studied. The results show that TiC composite particles uniformly distribute in the coating. The coating and the steel substrate are chemical bonded with each other. When the size of TiC particles is unchanged, with the increase of quality fraction of the TiC particles, the hardness increased gradually and the wear resistance of composite coating under different conditions changed. The unit area weigh loss increased following by the load increasing, and the unit area weigh loss is the most under Alkaline condition. And the unit area weight loss increased following by the increase of the abrasive and the reaction time.

Synthesis and electron beam facing oftitanium monoboride – titanium matrix composite powders

2019 ◽  
pp. 88-102 ◽  
Author(s):  
G. A. Pribytkov ◽  
V. V. Korzhova ◽  
M. G. Krinitsyn ◽  
I. A. Firsina
Keyword(s):  
Wear Resistance ◽  
Electron Beam ◽  
Abrasive Wear ◽  
Matrix Composite ◽  
Abrasive Wear Resistance ◽  
Titanium Matrix ◽  
Titanium Matrix Composite ◽  
Composite Powders ◽  
Titanium Monoboride ◽  
Reactive Powder

Titanium monoboride – titanium matrix composite powders have been synthesized by self-propagating high temperature synthesis (SHS) in titanium and boron reactive powder mixtures. Titanium matrix (binder) content varied from 20 to 60%. The SHS powders were cladded on VT1-0 titanium sheet by electron beam facing. Cladded coatings’ thickness varied from 1 to 3 mm depending on the pass number. Phase composition and structure of powders and coatings were investigated by X-ray diffraction, optical and scanning electron microscopy. According to structure investigation and hardness profiles view in the “coating – titanium base plate” transition zone an adhesion of the coating to the base is high. The hardness and abrasive wear resistance tests of the cladded coatings were carried out depending on the powder used for cladding. The maximum hardness of the coatings strengthened by eagle-like titanium monoboride inclusions as compared with VТ1-0 base increases 2.2 times and abrasive wear resistance 3.7 times. According to previously obtained results hardening and abrasive wear resistance of titanium monoboride is much weaker than that of titanium carbide: hardness increases 1.7 times, wear resistance 5.8 times.

Synthesis and electron beam facing of TiB – TiC – titanium matrix hybrid composite powders

2019 ◽  
pp. 89-101
Author(s):  
G. A. Pribytkov ◽  
V. V. Korzhova ◽  
M. G. Krinitsyn ◽  
I. A. Firsina
Keyword(s):  
Wear Resistance ◽  
Electron Beam ◽  
Titanium Carbide ◽  
Abrasive Wear ◽  
Base Plate ◽  
Abrasive Wear Resistance ◽  
Titanium Matrix ◽  
Composite Powders ◽  
Titanium Monoboride ◽  
Reactive Powder

TiB – TiC – titanium matrix composite powders have been synthesized by self-propagating high temperature synthesis (SHS) in titanium, boron and carbon reactive powder mixtures. A target volume content of the titanium matrix (binder) in the powders was 50%. The SHS powders were cladded on VT1-0 titanium sheet by electron beam facing. A thickness of the cladded coatings varied from 1 to 3 mm depending on the pass number. A phase composition and a structure of the SHS powders and of the cladded coatings were invetigated be X-ray diffraction, optical and scanning electron microscopy. According to structure investigation and hardness profiles in the “coating – titanium base plate” transition zone an adhesion of the coating to the base is high. The hardness and abrasive wear resistance tests of the cladded coatings were carried out depending on the powder used for cladding. The maximum hardness increase of the coatings strengthened by titanium monoboride and titanium carbide inclusions is 2.2 times and abrasive wear resistance – 4.3 times as compared with VТ1-0 base. According to authors’ earlier results enhance hardness and abrasive wear resistant effects of titanium matrix by titanium carbide particles and titanium monoboride is near to the wear resistance of coatings deposited with SHS TiB + Ti powder, but ~5 times less than the wear resistance of coatings surfaced with SHS powder TiC + Ti.

Analysis of the Structure and Abrasive Wear Resistance of White Cast Iron with Precipitates of Carbides

2013 ◽  
Vol 58 (3) ◽  
pp. 973-976 ◽  
Author(s):  
D. Kopyciński ◽  
M. Kawalec ◽  
A. Szczęsny ◽  
R. Gilewski ◽  
S. Piasny
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Abrasive Wear ◽  
Metal Matrix ◽  
White Cast Iron ◽  
Abrasive Wear Resistance ◽  
Operating Conditions ◽  
Metallographic Analysis ◽  
Abrasive Hardness ◽  
Resistance Tests

Abstract The resistance of castings to abrasive wear depends on the cast iron abrasive hardness ratio. It has been anticipated that the white cast iron structure will be changed by changing the type of metal matrix and the type of carbides present in this matrix, which will greatly expand the application area of castings under the harsh operating conditions of abrasive wear. Detailed metallographic analysis was carried out to see the structure obtained in selected types of white cast iron, i.e. with additions of chromium and vanadium. The study compares the results of abrasive wear resistance tests performed on the examined types of cast iron.

Tungsten Carbide Dispersed High Cr-Ni Cast Iron Produced by Plasma Spraying

2017 ◽  
Vol 891 ◽  
pp. 565-568
Author(s):  
Yasuhiro Hoshiyama ◽  
Kyouhei Yamaguchi ◽  
Hidekazu Miyake
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Tungsten Carbide ◽  
Alloy Powder ◽  
Treatment Temperature ◽  
Heat Treated ◽  
Ni Alloy ◽  
Low Pressure Plasma ◽  
Plasma Sprayed ◽  
Carbide Particles

Fe-C-W-Cr-Ni alloy powder in diameter of 32-53 μm made by argon atomization was low-pressure plasma sprayed to produce high Cr-Ni cast iron base deposits with finely dispersed tungsten carbide particles. The as-sprayed deposit produced on a non-cooled substrate was composed of γFe, αFe and carbide. The fine precipitates in the as-sprayed deposit were carbide. With increasing heat treatment temperature up to 1273 K, the carbide particles coarsened. The as-sprayed deposit produced on a non-cooled substrate had higher hardness than the heat-treated deposits. The wear resistance of the as-sprayed deposit produced on a non-cooled substrate was lower than that of heat-treated deposits. The as-sprayed deposit produced on a non-cooled substrate and heat-treated deposits had higher wear resistance than commercial stainless steel.

Characterization of Cr2O3-TiO2-CaF2 Coatings Using Plasma Spray Process

1997 ◽  
Author(s):  
A.Ph. Ilyuschenko ◽  
N.I. Shipica ◽  
P.A. Vityaz ◽  
A.A. Yerstak ◽  
A.Y. Beliaev
Keyword(s):  
Wear Resistance ◽  
Plasma Spray ◽  
Composite Coatings ◽  
Wear Testing ◽  
Material System ◽  
Composite Powders ◽  
Spray Coatings ◽  
Spray Process ◽  
Plasma Spray Coatings ◽  
High Temperature Synthesis

Abstract This paper presents the results of a study on the wear resistance of plasma spray coatings made from Cr2O3-TiO2-CaF2 powders. The composite powders used were produced by self-propagating high temperature synthesis. They were then applied under various conditions in order to optimize the material system, spray process, and application procedures. Based on the results of microstructural examination and wear testing, the thermally sprayed composite coatings have excellent wear resistance, good adhesion, and are self-lubricating at high temperatures.

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