In Situ Synthesis of Fe–TiC Nanocomposite Coating on CK45 Steel From Ilmenite Concentrate by Plasma-Spray Method

2016 ◽  
Vol 139 (1) ◽  
Author(s):  
Alireza Firouzbakht ◽  
Mansour Razavi ◽  
Mohammad Reza Rahimipour
Keyword(s):  
Wear Resistance ◽  
Plasma Spray ◽  
Raw Materials ◽  
Nanocomposite Coating ◽  
In Situ Synthesis ◽  
Phase Identification ◽  
Wear Resistant ◽  
Spray Process ◽  
Ilmenite Concentrate

These days wear-resistant coatings including Fe–TiC composites because of their properties such as high melting point, hardness, and wear resistance are used in different fields such as aerospace, transport, cutting, and abrasive. In situ synthesis of Fe–TiC nanocomposite as a wear-resistant coating by the plasma-spray process is the purpose of this study. Ilmenite concentrate and carbon black were used as raw materials. Three kinds of powders with different conditions were prepared and sprayed on CK45 steel substrates in constant conditions. Microstructure, phase identification, wear resistance, and hardness of coated samples were determined. The results showed that activated sample was synthesized during the plasma spray, but in situ synthesize did not happen for inactive sample which was sprayed by plasma spray. Also, wear resistance and hardness tests showed by synthesis of Fe–TiC composite in coated samples, wear resistance, and hardness were increased.

IN SITU DEPOSITION OF Fe-TiC NANOCOMPOSITE ON STEEL BY LASER CLADDING

2016 ◽  
Vol 24 (06) ◽  
pp. 1750080 ◽  
Author(s):  
MANSOUR RAZAVI ◽  
MOHAMMAD REZA RAHIMIPOUR ◽  
MOJDEH GANJI ◽  
MANSOREH GANJALI ◽  
MONIREH GANGALI
Keyword(s):  
Wear Resistance ◽  
Raw Materials ◽  
Steel Substrate ◽  
Nanocomposite Coating ◽  
Laser Method ◽  
In Situ Deposition ◽  
Coating Method ◽  
Crystallite Sizes ◽  
Laser Coating

The possibility of deposition of Fe–TiC nanocomposite on the surface of carbon steel substrate with the laser coating method had been investigated. Mechanical milling was used for the preparation of raw materials. The mixture of milled powders was used as a coating material on the substrate steel surface and a CO2 laser was used in continuous mode for coating. Microstructural studies were performed by scanning electron microscopy. Determinations of produced phases, crystallite size and mean strain have been done by X-ray diffraction. The hardness and wear resistance of coated samples were measured. The results showed that the in situ formation of Fe–TiC nanocomposite coating using laser method is possible. This coating has been successfully used to improve the hardness and wear resistance of the substrate so that the hardness increased by about six times. Coated iron and titanium carbide crystallite sizes were in the nanometer scale.

scholarly journals Locally Reinforcement TiC-Fe Type Produced in Situ in Castings

2016 ◽  
Vol 16 (3) ◽  
pp. 77-82 ◽  
Author(s):  
E. Olejnik ◽  
Ł. Szymański ◽  
P. Kurtyka ◽  
T. Tokarski ◽  
W. Maziarz ◽  
...  
Keyword(s):  
Grain Size ◽  
Wear Resistance ◽  
Raw Materials ◽  
Cast Steel ◽  
Structural Elements ◽  
Wear Resistant ◽  
Mineral Raw Materials ◽  
Energy Consuming ◽  
The Subject

Abstract Refinement is one of the most energy consuming technological process, aimed at obtaining mineral raw materials of the proper grain size. Cast structural elements such as jaws or hammers in crushing machines operate under conditions of an intensive wear. The data indicate that 80 % of failures of machines and devices is caused by wearing of rubbing surfaces. This problem became the subject of several scientific and industrial investigations carried out in the whole world in order to produce materials ultra- wear resistant. Methods allowing to obtain wear resistant composite castings are discussed in the hereby paper. Within the performed research microstructures of the produced composite zones were presented and the comparative analysis with regard to mechanical and functional properties of local composite reinforcements in relation to the commercial alloys of increased wear resistance was performed. The results show almost twenty five times increase in wear resistance compared to manganese cast steel containing 18 % Mn.

Composite Fe/TiC Powders for Wear Resistance Coatings Using Plasma Spray Process

1997 ◽  
Author(s):  
P. Vitiaz ◽  
T. Azarova ◽  
T. Talako ◽  
A. Ilyuschenko ◽  
S. Steinhauser ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Plasma Spraying ◽  
Plasma Spray ◽  
Coating Properties ◽  
Iron Matrix ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Spray Process ◽  
Plasma Spray Process ◽  
Wear Resistance Coatings

Abstract This work evaluates the potential of using new competitive powders of Fe/TiC system for plasma spraying of wear resistant coatings. To improve coating properties, Cr and Ni were added to the iron matrix. The results of complex investigations of plasma coatings from such materials are presented.

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.

scholarly journals Mechanical Properties of In-Situ Synthesis of Ti-Ti3Al Metal Composite Prepared by Selective Laser Melting

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1121 ◽  
Author(s):  
Li ◽  
Liang ◽  
Tian ◽  
Yang ◽  
Xie ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Selective Laser Melting ◽  
Melting Process ◽  
In Situ Synthesis ◽  
Metal Composite ◽  
Dispersion Strengthening ◽  
Laser Melting ◽  
Compression Properties

Titanium composite strengthened by Ti3Al precipitations is considered to be one of the excellent materials that is widely used in engineering. In this work, we prepared a kind of Ti-Ti3Al metallic composite by in-situ synthesis technology during the SLM (selective laser melting) process, and analyzed its microstructure, wear resistance, microhardness, and compression properties. The results showed that the Ti-Ti3Al composite, prepared by in-situ synthesis technology based on SLM, had more homogeneous Ti3Al-enhanced phase dispersion strengthening structure. The grain size of the workpiece was about 1 μm, and that of the Ti3Al particle was about 200 nm. Granular Ti3Al was precipitated after the aluminum-containing workpiece formed, with a relatively uniform distribution. Regarding the mechanical properties, the hardness (539 HV) and the wear resistance were significantly improved when compared with the Cp-Ti workpiece. The compressive strength of the workpiece increased from 886.32 MPa to 1568 MPa, and the tensile strength of the workpiece increased from 531 MPa to 567 MPa after adding aluminum. In the future, the combination of in-situ synthesis technology and SLM technology can be used to flexibly adjust the properties of Ti-based materials.

Investigation on Microstructure and Wear Resistance of the New CrWMoV High-Alloy Wear Resistant Cast Iron

2014 ◽  
Vol 1061-1062 ◽  
pp. 670-673
Author(s):  
Zheng Ting Wang ◽  
Hong Ming Gao
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Impact Toughness ◽  
Energy Dispersive Spectrometer ◽  
Rockwell Hardness ◽  
High Alloy ◽  
Wear Resistant ◽  
Average Impact ◽  
Result Show

This paper mainly introduces the new CrWMoV high-alloy wear resistant cast iron prepared by the composition design, the composition proportion and the melting and pouring, and analyses its microstructure and wear resistance. Microstructures and phases of the new CrWMoV high-alloy wear resistant cast iron were analyzed by scanning electron microscopy, energy dispersive spectrometer and X-ray diffract meter. Furthermore, the Rockwell hardness, impact toughness and wear resistance of the material were also studied. The result show that the composition of the new CrWMoV high-alloy wear resistant cast iron is mainly (V, W) C particles which is synthesized in-situ and evenly distributed in the composite, as well as a small amount of (Cr, Fe) 7C3 phase and Fe-Cr phase. The average Rockwell hardness of the composite is about 64.5 HRC, the average impact toughness is 9.85 J/cm2, and the relative wear ability of the composite is about 2 times higher than the Cr15Mo2Cu which shows good wear resistance.

IN SITU SYNTHESIS OF TiC–TiB2 REINFORCED FeCrSiB COMPOSITE COATING BY LASER CLADDING

2007 ◽  
Vol 14 (02) ◽  
pp. 315-319 ◽  
Author(s):  
BAOSHUAI DU ◽  
ZENGDA ZOU ◽  
XINHONG WANG ◽  
QINGMING LI
Keyword(s):  
Wear Resistance ◽  
Chemical Composition ◽  
Carbon Steel ◽  
Laser Cladding ◽  
Metal Matrix ◽  
In Situ Synthesis ◽  
Mild Carbon Steel ◽  
Measurement Results ◽  
Iron Based

TiC and TiB 2 reinforced iron based metal matrix composite (MMC) coating was synthesized on mild carbon steel by laser cladding employing B 4 C , ferrotitanium, and FeCrSiB mixed powders. The microstructure and chemical composition were analyzed by means of SEM, EPMA, and XRD. Results show that the coating mainly consists of α– Fe(Ni) , TiB 2, TiC , B 6 Fe 23, Cr 2 B , and M 23 C 6. TiB 2, and TiC reinforcements are formed in situ through the reaction between B 4 C and ferrotitanium. Hardness and wear measurement results show that the hardness and wear resistance of the composites are much higher than that of the as-received sample.

scholarly journals Preparation and Characterization of In Situ Carbide Particle Reinforced Fe-Based Gradient Materials by Laser Melt Deposition

Coatings ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 467 ◽  
Author(s):  
Weian Zong ◽  
Song Zhang ◽  
Chunhua Zhang ◽  
Chenliang Wu ◽  
Jingbo Zhang ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Steel Powder ◽  
Gradient Material ◽  
Wear Resistant ◽  
Gradient Materials ◽  
Melt Deposition ◽  
Surface Rigidity ◽  
Better Than

To obtain the wear-resistant camshaft with surface rigidity and core toughness and improve the service life of camshaft, wear-resistant Fe-based alloy gradient material was prepared by laser melt deposition. The traditional camshaft was forged by 12CrNi2V. In this paper, four types of wear-resistant Fe-based powders were designed by introducing various content of Cr3C2 and V-rich Fe-based alloy (FeV50) into stainless steel powder. The results showed that the gradient materials formed a satisfactory metallurgical bond. The composition of the phases was mainly composed of α-Fe, Cr23C6, and V2C phases. The increasing of Cr3C2 and FeV50 led to transform V2C into the V8C7. The microstructures were mainly cellular dendrite and intergranular structure. Due to the addition of Cr3C2 and FeV50, the average microhardness and wear resistance of gradient materials were significantly better than that of 12CrNi2V. The sample with 8% V had the highest microhardness of 853 ± 18 HV, which was 2.6 times higher than that of 12CrNi2V. The sample with 6% V had the best wear resistance, which was 21 times greater than that of 12CrNi2V.

Mechanical Properties of Hot-Pressed B4C-TiB2 Composites Synthesized from B4C-TiO2 and B4C-TiC

2021 ◽  
Vol 902 ◽  
pp. 81-86
Author(s):  
Shu Mao Zhao ◽  
Ling Ran Zhao
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Volume Fraction ◽  
Raw Materials ◽  
Ceramic Composites ◽  
In Situ Synthesis ◽  
Second Phase ◽  
Pressing Method ◽  
The One

In this study, B4C-TiB2 ceramic composites were manufactured by hot pressing method. The raw materials for the in-situ synthesis of TiB2 were TiO2 and TiC. After being sintered at 1900°C for 60min under a pressure of 30MPa, compact composites samples with a TiB2 volume fraction range from 0 to 11.05% were prepared. The relative density, fracture toughness and flexural strength of different sample were tested. Microstructures on the fracture surface were studied by SEM. The result shows that B4C-TiB2 ceramic composites sintered from B4C-TiC had a better mechanical property than the one sintered from B4C-TiO2. When the content of TiB2 (reacted from TiC) was 11.05vol.%, the strength and toughness of B4C-TiB2 ceramics can reach 598MPa and 6.45MPa·m1/2. The toughening mechanisms of B4C-TiB2 composites include micro-crack toughening and energy consumption by the pulling out process of second phase.

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