High Cavitation Resistance Performance of Al0.3CoCrFeNi Coating Reinforced by Ternary Cr2AlC Compound

Lin Zhang; Yihu Ma; Wenbo Yu; Jianhua Liu; Bing Du; Xiaohui Ao

doi:10.3390/coatings15121469

High Cavitation Resistance Performance of Al_0.3CoCrFeNi Coating Reinforced by Ternary Cr₂AlC Compound

Lin Zhang
, Yihu Ma
, Wenbo Yu^*
, Jianhua Liu^*
, Bing Du
, Xiaohui Ao

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Cavitation resistance in hydraulic machinery requires the turbine and water pump surface to simultaneously possess high hardness and plasticity. To keep the FCC structure of the Al_xCoCrFeNi alloy matrix and introduce the particle strengthening effects, the suitable weight content of Cr₂AlC particles was calculated and added into Al_0.3CoCrFeNi powders. Due to the decomposition of Cr₂AlC during laser cladding, the microhardness of Al_0.3CoCrFeNi was enhanced by Al atoms and the eutectic-like Cr₇C₃ structure. In comparison with 5.81 GPa of Al_0.3CoCrFeNi coating measured by nanoindentation, the values of the eutectic-like structure and the matrix were measured as 7.76 GPa and 5.93 GPa in 12 wt.% Cr₂AlC/Al_0.3CoCrFeNi coating. Attributed to the pinning effect of hard Cr₇C₃ and high plastic matrix, the mass loss was reduced from 7.25 × 10⁻⁴ g/mm² for Al_0.3CoCrFeNi coating to 1.91 × 10⁻⁴ g/mm² Cr₂AlC/Al_0.3CoCrFeNi coating with a ratio of 73.8%.

Original language	English
Article number	1469
Journal	Coatings
Volume	15
Issue number	12
DOIs	https://doi.org/10.3390/coatings15121469
Publication status	Published - Dec 2025
Externally published	Yes

Keywords

CrAlC
cavitation erosion
composite coatings
laser cladding

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10.3390/coatings15121469

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title = "High Cavitation Resistance Performance of Al0.3CoCrFeNi Coating Reinforced by Ternary Cr2AlC Compound",

abstract = "Cavitation resistance in hydraulic machinery requires the turbine and water pump surface to simultaneously possess high hardness and plasticity. To keep the FCC structure of the AlxCoCrFeNi alloy matrix and introduce the particle strengthening effects, the suitable weight content of Cr2AlC particles was calculated and added into Al0.3CoCrFeNi powders. Due to the decomposition of Cr2AlC during laser cladding, the microhardness of Al0.3CoCrFeNi was enhanced by Al atoms and the eutectic-like Cr7C3 structure. In comparison with 5.81 GPa of Al0.3CoCrFeNi coating measured by nanoindentation, the values of the eutectic-like structure and the matrix were measured as 7.76 GPa and 5.93 GPa in 12 wt.\% Cr2AlC/Al0.3CoCrFeNi coating. Attributed to the pinning effect of hard Cr7C3 and high plastic matrix, the mass loss was reduced from 7.25 × 10−4 g/mm2 for Al0.3CoCrFeNi coating to 1.91 × 10−4 g/mm2 Cr2AlC/Al0.3CoCrFeNi coating with a ratio of 73.8\%.",

keywords = "CrAlC, cavitation erosion, composite coatings, laser cladding",

author = "Lin Zhang and Yihu Ma and Wenbo Yu and Jianhua Liu and Bing Du and Xiaohui Ao",

note = "Publisher Copyright: {\textcopyright} 2025 by the authors.",

year = "2025",

month = dec,

doi = "10.3390/coatings15121469",

language = "English",

volume = "15",

journal = "Coatings",

issn = "2079-6412",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "12",

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TY - JOUR

T1 - High Cavitation Resistance Performance of Al0.3CoCrFeNi Coating Reinforced by Ternary Cr2AlC Compound

AU - Zhang, Lin

AU - Ma, Yihu

AU - Yu, Wenbo

AU - Liu, Jianhua

AU - Du, Bing

AU - Ao, Xiaohui

PY - 2025/12

Y1 - 2025/12

N2 - Cavitation resistance in hydraulic machinery requires the turbine and water pump surface to simultaneously possess high hardness and plasticity. To keep the FCC structure of the AlxCoCrFeNi alloy matrix and introduce the particle strengthening effects, the suitable weight content of Cr2AlC particles was calculated and added into Al0.3CoCrFeNi powders. Due to the decomposition of Cr2AlC during laser cladding, the microhardness of Al0.3CoCrFeNi was enhanced by Al atoms and the eutectic-like Cr7C3 structure. In comparison with 5.81 GPa of Al0.3CoCrFeNi coating measured by nanoindentation, the values of the eutectic-like structure and the matrix were measured as 7.76 GPa and 5.93 GPa in 12 wt.% Cr2AlC/Al0.3CoCrFeNi coating. Attributed to the pinning effect of hard Cr7C3 and high plastic matrix, the mass loss was reduced from 7.25 × 10−4 g/mm2 for Al0.3CoCrFeNi coating to 1.91 × 10−4 g/mm2 Cr2AlC/Al0.3CoCrFeNi coating with a ratio of 73.8%.

AB - Cavitation resistance in hydraulic machinery requires the turbine and water pump surface to simultaneously possess high hardness and plasticity. To keep the FCC structure of the AlxCoCrFeNi alloy matrix and introduce the particle strengthening effects, the suitable weight content of Cr2AlC particles was calculated and added into Al0.3CoCrFeNi powders. Due to the decomposition of Cr2AlC during laser cladding, the microhardness of Al0.3CoCrFeNi was enhanced by Al atoms and the eutectic-like Cr7C3 structure. In comparison with 5.81 GPa of Al0.3CoCrFeNi coating measured by nanoindentation, the values of the eutectic-like structure and the matrix were measured as 7.76 GPa and 5.93 GPa in 12 wt.% Cr2AlC/Al0.3CoCrFeNi coating. Attributed to the pinning effect of hard Cr7C3 and high plastic matrix, the mass loss was reduced from 7.25 × 10−4 g/mm2 for Al0.3CoCrFeNi coating to 1.91 × 10−4 g/mm2 Cr2AlC/Al0.3CoCrFeNi coating with a ratio of 73.8%.

KW - CrAlC

KW - cavitation erosion

KW - composite coatings

KW - laser cladding

UR - https://www.scopus.com/pages/publications/105026122520

U2 - 10.3390/coatings15121469

DO - 10.3390/coatings15121469

M3 - Article

AN - SCOPUS:105026122520

SN - 2079-6412

VL - 15

JO - Coatings

JF - Coatings

IS - 12

M1 - 1469

ER -

High Cavitation Resistance Performance of Al_0.3CoCrFeNi Coating Reinforced by Ternary Cr₂AlC Compound

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