Microstructure and wear properties of TiC/FeCrBSi surface composite coating prepared by laser cladding

2008 ◽  
Vol 202 (15) ◽  
pp. 3600-3606 ◽  
Author(s):  
X.H. Wang ◽  
M. Zhang ◽  
X.M. Liu ◽  
S.Y. Qu ◽  
Z.D. Zou
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Wear Properties ◽  
Surface Composite

Microstructure and wear properties of Fe–TiC surface composite coating by laser cladding

2008 ◽  
Vol 43 (5) ◽  
pp. 1546-1551 ◽  
Author(s):  
Shiyao Qu ◽  
Xinhong Wang ◽  
Min Zhang ◽  
Zengda Zou
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Wear Properties ◽  
Surface Composite

scholarly journals Laser Cladding of Ni-Co-W Composite Coating on Stainless Steel to Enhance Wear Resistance

2021 ◽  
Author(s):  
Linlin ZHANG ◽  
Dawei ZHANG
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Composite Coating ◽  
Laser Cladding ◽  
Composite Coatings ◽  
Eutectic Structure ◽  
Wear Properties ◽  
Fine Grained ◽  
Noticeable Improvement ◽  
Enhance Wear Resistance

Ni-Co-W composite coatings modified by different contents of Co-based alloy powder in the Ni-based alloy with 35 wt.% WC (Ni35WC) were deposited on stainless steel by laser cladding. The influence of compositional and microstructural modification on the wear properties has been comparatively investigated by XRD, SEM, and EDS techniques. It was found that the austenite dendrites in the modified coating adding 50 wt.% Co-based alloy were refined and a lot of Cr23C6 or M23(C, B)6 compounds with fine lamellar feature were formed around austenitic grain boundaries or in the intergranular regions. The contribution of element Co to the modification of Ni35WC coating is that it cannot only promote the formation of more hard compounds to refine austenite grains, but also refine the size of precipitates, and change the phase type of eutectic structure as a result of disappeared Cr boride brittle phases. A noticeable improvement in wear resistance is obtained in the Ni35WC coating with 50 wt.% Co-based alloy, which makes the wear rate decreased by about 53 % and 30% by comparison to that of the substrate and the Ni35WC coating, respectively. It is suggested that the improvement is closely related to the composite coating being strengthened owing to the increase of coating hardness, formation of a fine-grained microstructure caused by Co, and fine hard precipitate phases in the eutectic structure.

Microstructure and Wear Properties of Laser Clad (Ti,Mo)C Multiple Carbide Reinforced Fe-Based Composite Coating

2010 ◽  
Vol 132 (4) ◽  
Author(s):  
Xinhong Wang ◽  
Min Zhang ◽  
Shiyao Qu
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Surface Coating ◽  
Pattern Analysis ◽  
Volume Fraction ◽  
Wear Properties ◽  
Selective Area ◽  
Laser Cladding Process ◽  
Carbide Size ◽  
Cubic Structure

(Ti,Mo)C multiple carbide reinforced Fe-based composite coating was produced by laser melting a precursor mixture graphite, ferrotitanium (Fe–Ti), and ferromolybdenum (Fe–Mo) powders. The results showed that flowerlike and cubic type (Ti,Mo)C multiple carbides were formed during laser cladding process. The selective area diffraction pattern analysis indicated that (Ti,Mo)C crystallizes with cubic structure, which indicates that (Ti,Mo)C carbides were multiple carbides with Mo dissolved in the TiC structure. The formation of (Ti,Mo)C particles was achieved via a nucleation-growth mechanism during the laser cladding process. Increasing the amount of Fe–Mo in the reactants led to a decrease of carbide size and an increase of volume fraction of carbides. The coating possessed good cracking resistance when the amount of Fe–Mo was controlled within a range of 15 wt %. The Fe-based surface coating reinforced by (Ti,Mo)C multiple carbides gave an excellent wear resistance.

MICROSTRUCTURE AND WEAR PROPERTIES OF LASER CLAD TiB2 + TiC/Fe COMPOSITE COATING

2012 ◽  
Vol 19 (05) ◽  
pp. 1250052 ◽  
Author(s):  
X. H. WANG ◽  
M. ZHANG ◽  
B. S. DU ◽  
S. LI
Keyword(s):  
Wear Resistance ◽  
Composite Coating ◽  
Laser Cladding ◽  
Volume Fraction ◽  
Composite Coatings ◽  
Wear Properties ◽  
Friction Coefficients ◽  
Iron Based

Iron-based composite coatings reinforced with TiB2–TiC multiple ceramic have been fabricated from a precursor of B4C , TiO2 and Al powders by laser cladding. The effect of TiO2 and Al on the microstructure and wear properties of the coatings was investigated. The results showed that the volume fraction, type and size of the reinforcements were influenced by the content of TiO2 and Al . TiB2 and TiC were evenly distributed in the coating; however, most of Al2O3 were ejected from the coatings, only few of them retained in the coating acting as nucleation core of reinforcement or inclusion. The microhardness and wear resistance of the coatings were improved, whereas the friction coefficients of the coatings were considerably lower than that of substrate.

Reaction synthesis of (Ti,V)C carbide reinforced Fe based surface composite coating by laser cladding

2009 ◽  
Vol 25 (3) ◽  
pp. 211-217 ◽  
Author(s):  
X. H. Wang ◽  
L. Cheng ◽  
M. Zhang ◽  
S. Y. Qu ◽  
B. S. Du ◽  
...  
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Reaction Synthesis ◽  
Surface Composite

scholarly journals Effect of Laser Cladding Stellite 6-Cr3C2-WS2 Self-Lubricating Composite Coating on Wear Resistance and Microstructure of H13

Metals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 785 ◽  
Author(s):  
Wei Chen ◽  
Bo Liu ◽  
Long Chen ◽  
Jiangping Xu ◽  
Yingxia Zhu
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Composite Coatings ◽  
Wear Test ◽  
Hot Working ◽  
X Ray Diffraction ◽  
Wear Properties ◽  
Stellite 6 ◽  
Hot Working Die Steel ◽  
Eutectic Colony

In order to prevent the wear failure of the hot-working die, the composite coatings of Stellite 6-Cr3C2-WS2 was fabricated on H13 hot-working die steel by laser cladding. The composite coating was prepared through the in-situ generation technology, that can give H13 the ability of self-lubricating at the working temperature (about 200 °C). The effect of the various WS2 percentages on the properties of the coating was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), microhardness test, friction and wear test. In addition, the phase constitutions, microstructures and wear properties were also investigated systematically. The obtained hardness of the cladding coating is approximately 2.5 times higher than the substrate because of the constituents of γ-(Fe, Co)/Cr7C3 eutectic colony, (Cr, W)C carbide and dendritic crystals in the coating. Furthermore, the friction coefficient decreases to 70% of the substrate due to the CrS self-lubricating phase. The analyses results suggest that an 85% Stellite 6-10% Cr3C2-5% WS2 composite coating has excellent material properties.

Microstructural Characteristics and Wear Properties of NiCr/Cr3C2-WS2 Self-Lubricant Wear-Resistant Composite Coating on Ti6Al4V by Laser Cladding

2013 ◽  
Vol 395-396 ◽  
pp. 814-817
Author(s):  
Hong Mei Fan ◽  
Hai Qing Liu ◽  
Jia Ren ◽  
Xiang Jun Meng ◽  
Xiu Bo Liu
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Energy Dispersive Spectrometer ◽  
The Self ◽  
X Ray Diffraction ◽  
Wear Properties ◽  
Microstructural Characteristics ◽  
Wear Resistant ◽  
X Ray ◽  
Ball On Disc

The self-lubricant wear-resistant NiCr/Cr3C2-10%WS2 coating and wear-resistant NiCr/Cr3C2 coating were obtained on Ti6Al4V by laser cladding. Microstructure of the coatings was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray energy dispersive spectrometer (EDS). The wear properties were evaluated using a ball-on-disc wear tester under dry sliding condition. The results show that the laser cladding NiCr/Cr3C2-10%WS2 composite coating has good friction-reducing and anti-wear capabilities at ambient.

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