(Fe,Cr)7C3/Fe surface gradient composite: Microstructure, microhardness, and wear resistance

Ye, Fangxia; Hojamberdiev, Mirabbos; Xu, Yunhua; Zhong, Lisheng; Yan, Honghua; Chen, Zhe

doi:10.1016/j.matchemphys.2014.06.026

Cited by 30 publications

(9 citation statements)

References 22 publications

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“…By combining different cathode materials in an alternating mode of deposition, it is possible to deposit multi-layered coatings with gradient microstructure and properties. The formation of gradient structures is reported as a most promising approach to improve the tribological behavior of many materials, such as ceramic composites [13,14], alloys [15], coatings [16]. A post-deposition heat treatment can also be considered as a complementary stage for improving coating properties [17,18].…”

Section: Introductionmentioning

confidence: 99%

Pulsed plasma deposition of Fe-C-Cr-W coating on high-Cr-cast iron: Effect of layered morphology and heat treatment on the microstructure and hardness

Ефременко

Chabak

Lekatou

et al. 2016

Surface and Coatings Technology

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Pulsed plasma treatment was applied for surface modification and laminated coating deposition on 14.5wt%-Cr cast iron. The scopes of the research were: (a) to obtain a microstructure gradient, (b) to study the relationship between cathode material and coating layer microstructure/hardness, and (c) to improve coating quality by applying post-deposition heat treatment. An electrothermal axial plasma accelerator with a gas-dynamic working regime was used as plasma source (4.0 kV, 10 kA). The layered structure was obtained by alternation of the cathode material (T1-18 wt% W high speed steel and 28 wt% Cr-cast iron).

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Section: Introductionmentioning

confidence: 99%

Pulsed plasma deposition of Fe-C-Cr-W coating on high-Cr-cast iron: Effect of layered morphology and heat treatment on the microstructure and hardness

Ефременко

Chabak

Lekatou

et al. 2016

Surface and Coatings Technology

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“…According to Ishida [23], when the solid phase and liquid phase contact each other, the solid phase disengages partly dissolved atoms. Therefore, a Fe-Ta-C ternary system can be obtained at the interface between the iron matrix and tantalum plate [24] due to the strong bonding force between the tantalum atoms and the carbon atoms, while the dissolved tantalum atoms exist at the interface and the carbon atoms diffuse rapidly from the matrix at this temperature. Thus, the carbon atoms began to accumulate in the octahedral interstices of the tantalum atoms with a body centred cubic crystal structure (b.c.c.).…”

Section: Resultsmentioning

confidence: 99%

Fabrication, microstructure and abrasive wear characteristics of an in situ tantalum carbide ceramic gradient composite

Zhao

Zhong

et al. 2015

Ceramics International

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“…Previously, we have demonstrated an important contribution of the reinforcing (Cr,Fe) 7 C 3 phase on the mechanical response of the (Fe,Cr) 7 C 3 /Fe surface gradient composite (Ref [11][12][13]. The microstructure and mechanical properties (hardness and fracture toughness) of primary M 7 C 3 carbides affect both wear and fracture resistance of the composites.…”

Section: Introductionmentioning

confidence: 98%

Effect of Carbide Ceramic Zone on Wear Resistance of the (Fe,Cr)7C3/Fe Surface Gradient Composite

Hojamberdiev

et al. 2015

J. of Materi Eng and Perform

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In this work, we report on the influence of microstructure and mechanical properties of the (Fe,Cr) 7 C 3 ceramic zone on wear resistance of the (Fe,Cr) 7 C 3 /Fe surface gradient composite fabricated by in situ synthesis method followed by a post-heat treatment at 1100°C for 20 h in argon atmosphere. The phase composition, microstructure, nanoindentation hardness, elastic modulus, fracture toughness, and relative wear resistance of the (Fe,Cr) 7 C 3 /Fe surface gradient composite were investigated by means of x-ray diffraction, scanning electron microscopy, nanoindentation tester, and wear resistance testing instrument, respectively. The XRD results showed that (Fe,Cr) 7 C 3 is the predominant crystalline phases in the fabricated composite. The volume fraction of the (Fe,Cr) 7 C 3 particulates formed has a gradient distribution from the surface to the iron matrix, and the microstructure also changes significantly. The (Fe,Cr) 7 C 3 bulk ceramic zone with the volume fraction of about 100% and the (Fe,Cr) 7 C 3 dense ceramic zone with the volume fraction of about 90% were synthesized on the upper surface of the (Fe,Cr) 7 C 3 /Fe surface gradient composite, respectively. The average nanoindentation hardness and elastic modulus of the (Fe,Cr) 7 C 3 bulk ceramic zone of the composite were determined to be 12.711 and 256.054 GPa, respectively. The fracture toughness of the (Fe,Cr) 7 C 3 bulk ceramic zone is in the range of 2.06-4.19 MPa m 1/2 , and its relative wear resistance is about 56 times higher than that of the iron matrix. The (Fe,Cr) 7 C 3 dense ceramic zone with rod-like, secondary (Fe,Cr) 7 C 3 particulates was formed at the bottom of the (Fe,Cr) 7 C 3 bulk ceramic zone. Rod-like, secondary (Fe,Cr) 7 C 3 particulates are dense and grew in the direction of the iron substrate, providing higher wear resistance to the composite. The wear mechanisms of the (Fe,Cr) 7 C 3 bulk and dense ceramic zones are considered to be microcutting, microcracking, and spalling pit.

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(Fe,Cr)7C3/Fe surface gradient composite: Microstructure, microhardness, and wear resistance

Cited by 30 publications

References 22 publications

Pulsed plasma deposition of Fe-C-Cr-W coating on high-Cr-cast iron: Effect of layered morphology and heat treatment on the microstructure and hardness

Pulsed plasma deposition of Fe-C-Cr-W coating on high-Cr-cast iron: Effect of layered morphology and heat treatment on the microstructure and hardness

Fabrication, microstructure and abrasive wear characteristics of an in situ tantalum carbide ceramic gradient composite

Effect of Carbide Ceramic Zone on Wear Resistance of the (Fe,Cr)7C3/Fe Surface Gradient Composite

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