Effect of Dehydrogenation and Heat Treatments on the Microstructure and Tribological Behavior of Electroless Ni-P Nanocomposite Coatings

被引:0
作者
Pedrizzetti, Giulia [1 ]
Baroni, Enrico [2 ]
Gragnanini, Michele [2 ]
Bottacchiari, Rita [1 ]
Merlin, Mattia [2 ]
Pulci, Giovanni [1 ]
Marra, Francesco [1 ]
机构
[1] Sapienza Univ Rome, Dept Chem Engn, INSTM Reference Lab Engn Surface Treatments, Mat,Environm, Via Eudossiana 18, I-00184 Rome, Italy
[2] Univ Ferrara, Dept Engn DE, I-44121 Ferrara, Italy
关键词
electroless Ni-P coatings; nanocomposite coatings; ZrO2 and Al2O3 nanoparticles; dehydrogenation; thermal treatments; instrumented indentation; wear resistance; PHASE-TRANSFORMATION BEHAVIOR; SUBMICRON SIC PARTICLES; CORROSION-RESISTANCE; COMPOSITE COATINGS; W-P; NICKEL; WEAR; HARDNESS; ALLOY; PERFORMANCE;
D O I
10.3390/ma17225657
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
High phosphorus Ni-P coatings, both unreinforced and modified by the addition of alumina (Al2O3) and zirconia (ZrO2) nanoparticles, were manufactured by electroless deposition technique and heat-treated with different temperature and duration schedules. The effect of dehydrogenation (200 degrees C for 2 h) and its combination with crystallization heat treatment was studied in terms of microstructural changes and wear resistance. The amorphous structure of the coatings was not altered by the introduction of both Al2O3 and ZrO2 nanoparticles, and the addition of 1.5 g/L of ZrO2 yielded the highest microhardness due to better particles dispersion. Dehydrogenation improved hardness because of the early stages of grain growth; however, the greatest improvement in hardness (+120% compared to unreinforced Ni-P) was obtained after annealing at 400 degrees C for 1 h, because of the microprecipitation of the Ni3P crystalline phase induced by thermal treatment. No detectable differences in hardness and microstructure were detected when annealing at 400 degrees C for 1 h with or without prior dehydrogenation; however, the dehydrogenated coatings exhibited a lower Young's modulus. ZrO2-reinforced coatings demonstrated improved wear resistance, and wear tests revealed that dehydrogenation is fundamental for lowering the coefficient of friction (-14%) and wear rate (-97%) when performed before annealing at 400 degrees C for 1 h. The analysis of the wear tracks showed that the non-dehydrogenated samples failed by complete coating delamination from the substrate, with abrasion identified as the predominant wear mechanism. Conversely, the dehydrogenated samples demonstrated better resistance due to the formation of a protective oxide layer, leading to an overall increase in the coating wear resistance.
引用
收藏
页数:22
相关论文
共 73 条
[21]   Synthesis and properties of electroless Ni-P-HfC nanocomposite coatings [J].
Farhan, Mohammad ;
Fayyaz, Osama ;
Nawaz, Muddasir ;
Radwan, Ahmed Bahgat ;
Shakoor, R. A. .
MATERIALS CHEMISTRY AND PHYSICS, 2022, 291
[22]   Recent advances in electroless-plated Ni-P and its composites for erosion and corrosion applications: a review [J].
Fayyad E.M. ;
Abdullah A.M. ;
Hassan M.K. ;
Mohamed A.M. ;
Jarjoura G. ;
Farhat Z. .
Emergent Materials, 2018, 1 (1-2) :3-24
[23]   Mechanical and corrosion characteristics of TiC reinforced Ni-P based nanocomposite coatings [J].
Fayyaz, Osama ;
Farhan, Mohammad ;
Qamar, M. Ghuffran ;
Shakoor, R. A. ;
Bhadra, Jolly ;
Al-Thani, Noora J. .
MATERIALS TODAY COMMUNICATIONS, 2023, 36
[24]   Effect of Annealing Temperature and Alumina Particles on Mechanical and Tribological Properties of Ni-P-Al2O3 Composite Coatings [J].
Gadhari, Prasanna ;
Sahoo, Prasanta .
SILICON, 2017, 9 (05) :761-774
[25]  
Gangloff RP, 2012, Gaseous hydrogen embrittlement of materials in energy technologies
[26]   Characterisation and mechanical properties of electroless NiP-ZrO2 coatings [J].
Gay, P. -A. ;
Limat, J. M. ;
Steinmann, P. -A. ;
Pagetti, J. .
SURFACE & COATINGS TECHNOLOGY, 2007, 202 (4-7) :1167-1171
[27]   Pure thick nickel coating obtained by electroless plating: Surface characterization and wetting properties [J].
Genova, V. ;
Paglia, L. ;
Marra, F. ;
Bartuli, C. ;
Pulci, G. .
SURFACE & COATINGS TECHNOLOGY, 2019, 357 :595-603
[28]   Medium and High Phosphorous Ni-P Coatings Obtained via an Electroless Approach: Optimization of Solution Formulation and Characterization of Coatings [J].
Genova, Virgilio ;
Paglia, Laura ;
Pulci, Giovanni ;
Pedrizzetti, Giulia ;
Pranzetti, Alice ;
Romanelli, Marco ;
Marra, Francesco .
COATINGS, 2023, 13 (09)
[29]   PHOSPHORUS DISTRIBUTION IN ELECTROLESS NICKEL DEPOSITS [J].
GOULD, AJ ;
BODEN, PJ ;
HARRIS, SJ .
SURFACE TECHNOLOGY, 1981, 12 (01) :93-102
[30]   Indentation property and corrosion resistance of electroless nickel-phosphorus coatings deposited on austenitic high-Mn TWIP steel [J].
Hamada, A. S. ;
Sahu, P. ;
Porter, D. A. .
APPLIED SURFACE SCIENCE, 2015, 356 :1-8