Effect of strengthening particles on the dry sliding wear behavior of Al2O3–M7C3/Fe metal matrix composite coatings produced by laser cladding

Tan, Hui; Luo, Zhen; Li, Y.; Yan, Fuyao; Duan, Runyao; Huang, Yongxian

doi:10.1016/j.wear.2014.11.023

Cited by 67 publications

(28 citation statements)

References 34 publications

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“…Argon was used to protect the cladding layer from oxidation, and the argon flow rate was 25 mL/min. To investigate The oxide film on the surface of AZ31B magnesium alloy was polished mechanically and then cleaned with acetone to remove organic matter [15]. The coating powders were mixed uniformly with alcohol to coat the surface of work-piece to a thickness of about 1.0 mm.…”

Section: Methodsmentioning

confidence: 99%

The Wear Properties of TiC/Al-Based Composite Coating Applied by Laser Cladding

Wang

Huang

et al. 2018

Metals

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Aluminum powders with different concentrations of TiC ceramic particles were applied to an AZ31B magnesium alloy by laser cladding. Due to differences in coefficients of thermal expansion, the distribution of TiC ceramic particles in the cladding layer was not uniform. The results show that the degree of TiC ceramic particle agglomeration in the cladding layer increases with increasing TiC content. The phases of cladding metal mainly consisted of Al, γ-Al12Mg17, β-Al3Mg2, and TiC. The γ-Al12Mg17 phase mainly distributed to the bottom of the cladding layer, and the β-Al3Mg2 phase distributed to the middle and surface areas. The existence of the γ-Al12Mg17 phase enhanced the hardness of the fusion zone. The microhardness of the cladding layer increased with increasing TiC ceramic particle content. An appropriate TiC content improved the wear resistance of the cladding layer. When the TiC content was excessive, the agglomeration behavior of TiC ceramic particles strongly affected the wear resistance of the coatings.

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Section: Methodsmentioning

confidence: 99%

The Wear Properties of TiC/Al-Based Composite Coating Applied by Laser Cladding

Wang

Huang

et al. 2018

Metals

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“…Due to the mechanical machining of the friction ring, there are plenty of micro-asperities on the ring surface. During the wear process, the asperities can plow the surface of the HCCI, who have a relatively low hardness, thus leading to the obvious grooves and producing massive fine particles [30]. Then the fine particles from the friction pair to form the wear debris.…”

Section: Worn Surface Of the Compositementioning

confidence: 99%

Green Preparation and Dry Sliding Wear Properties of a Macro-ZTA/Fe Composite Produced by a Two-Step Method

Qiu

Xing

Dong

2019

Metals

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In this paper, a two-step method, rapid-flow mixing followed by high-pressure compositing was used to prepare a macro-ZTA (ZrO2-toughened Al2O3) particles reinforced high chromium cast iron (HCCI) matrix composite. The method is based on the squeeze casting process without general casting pollution problems. The microstructure, mechanical properties and dry sliding wear performance of the fabricated composite were investigated. The results showed that the particles were distributed uniformly throughout the iron matrix and a tightly bonded interface was obtained. Under dry sliding wear conditions, the wear resistance of the composite was significantly improved in comparison with the HCCI alloy, and the relative wear resistance was 1.8 and 2.9 times at the applied load of 300 and 900 N, respectively. When the load increased from 300 N to 900 N, the wear characteristics of the composite changed from shallow and narrow grooves and scratches to damages in the form of fragmentation of particles, transfer layer and interface cracking.

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“…By comparing the ignition temperatures of these reactions, one can find out which reaction is more favorable to occur, kinetically. The ignition temperature of reaction (3) is about 673 K [21,22] while these temperatures for reactions (4) and (5) are about 953 K [23] and 973-1333 K [24,25], respectively. According to these data, reaction (3) has the minimum standard Gibbs free energy and minimum ignition temperature.…”

Section: The Possible Reaction Mechanismmentioning

confidence: 99%

“…The hardness values of the composite and 304 stainless steel were 475 HV and 160 HV, respectively. Therefore, the higher hardness and the better wear properties of the nanostructure 304 stainless steel/Al 2 O 3 composite may be due to the following a: the presence of alumina particles with high hardness in the microstructure of the composite [25,26] and b: ultra-fine grain microstructure of the 304 stainless steel/Al 2 O 3 composite [27,28]. In other words, the presence of Al 2 O 3 particles and the formation of nanostructure matrix improved the hardness of the composite, considerably which led to better wear properties for the composite.…”

Section: The Possible Reaction Mechanismmentioning

confidence: 99%