Properties of Ni–ZrO2 nanocomposite coatings by electroplating

2019 ◽  
Vol 33 (01n03) ◽  
pp. 1940024
Author(s):  
Chao Xiong ◽  
Jin Xiao ◽  
Yu Zhao ◽  
Yuxin Wang ◽  
See Leng Tay ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Surface Morphology ◽  
Composite Coatings ◽  
Nanocomposite Coatings ◽  
Wear Property ◽  
Nanoparticles Concentration ◽  
Microstructure And Mechanical Property ◽  
Wear Tests

The microstructure, microhardness and wear property of electroplated Ni–ZrO2 nanocomposite coatings with different ZrO2 concentration were analyzed using SEM, microhardness and wear tests. It was found that in the composite coatings, incorporation of ZrO2 particles improves the mechanical property of Ni coatings and the effect of ZrO2 nanoparticles concentration on the surface morphology, microstructure and mechanical property of electroplated coatings was discussed. The mechanical properties of Ni–ZrO2 coatings reach the optimum value when the ZrO2 concentration is 10 g/L.

Microstructure and properties of Ni–Co–TiO2 composite coatings fabricated by electroplating

2015 ◽  
Vol 29 (10n11) ◽  
pp. 1540008 ◽  
Author(s):  
Yuxin Wang ◽  
Xin Shu ◽  
Wei Gao ◽  
R. A. Shakoor ◽  
Ramazan Kahraman ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Thermal Stability ◽  
Magnetic Properties ◽  
Composite Coatings ◽  
Wear Property ◽  
Tribological Behaviour ◽  
Good Thermal Stability ◽  
Microstructure And Properties ◽  
Anticorrosion Properties

Ni – Co coatings are widely used due to their unique mechanical properties, high anticorrosion properties, good thermal stability and special magnetic properties. Ni – Co – xTiO 2 ( x = 0–20 g/L in the electrolyte) composite coatings were fabricated by electrodeposition on mild steel. The effect of TiO 2 concentration on the microhardness, surface morphology and tribological behaviour has been studied. The results show that, comparing with pure Ni – Co coating, both microhardness and wear property of the Ni – Co – TiO 2 composite coatings were significantly improved. The microstructure and properties for the Ni – Co – TiO 2 composite coatings were varied following with the TiO 2 concentration. The mechanism of mechanical property improvement was also discussed.

Preparation of Electrodeposited Ni-CNTs Nanocomposite Coatings with Highly Wear and Corrosion Resistance Properties

2012 ◽  
Vol 548 ◽  
pp. 101-104 ◽  
Author(s):  
W. Shao ◽  
D. Nabb ◽  
N. Renevier ◽  
I. Sherrington ◽  
J.K. Luo
Keyword(s):  
Mechanical Property ◽  
Carbon Nanotubes ◽  
Corrosion Resistance ◽  
Surface Morphology ◽  
Corrosion Property ◽  
Nanocomposite Coatings ◽  
Sem Images ◽  
Wear And Corrosion ◽  
Watts Bath ◽  
Wear And Corrosion Resistance

Ni-carbon nanotubes nanocomposite coatings were obtained from a Watts bath containing uniformly dispersed carbon nanotubes (CNTs). The surface morphology was investigated by the SEM images of coatings. The mechanical property and corrosion resistance of the nanocomposite coatings were investigated. This study revealed these CNTs reinforced Ni nanocoatings have improved mechanical and corrosion property.

Effects of Nano-Al2O3 on the Mechanical Property and Microstructure of Nano-Micro Composite Self-Lubricating Ceramic Tool Material

2013 ◽  
Vol 770 ◽  
pp. 308-311 ◽  
Author(s):  
Ming Dong Yi ◽  
Chong Hai Xu ◽  
Zhao Qiang Chen ◽  
Guang Yong Wu
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Fracture Toughness ◽  
Flexural Strength ◽  
Tool Material ◽  
Ceramic Tool ◽  
Ceramic Tool Material ◽  
Composite Self ◽  
Microstructure And Mechanical Property ◽  
Grain Refinement Strengthening

A new nanomicro composite self-lubricating ceramic tool material was prepared with vacuum hot pressing technique. The effect of nanoAl2O3 powders on the microstructure and mechanical properties of nanomicro composite self-lubricating ceramic tool material was investigated. With the increase of nanoAl2O3 content, the hardness and fracture toughness first up then down. When the nanoAl2O3 content is 4 vol.%, the flexural strength, hardness and fracture toughness reaches 562 MPa, 8.46 MPa·m1/2 and 18.95 GPa, respectively. The microstructure and mechanical property of nanomicro composite self-lubricating ceramic tool material can be improved by the grain refinement strengthening of nanoAl2O3.

scholarly journals Effect of Post Processing Heat Treatment Routes on Microstructure and Mechanical Property Evolution of Haynes 282 Ni-Based Superalloy Fabricated with Selective Laser Melting (SLM)

Metals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 629
Author(s):  
Anagh Deshpande ◽  
Subrata Deb Nath ◽  
Sundar Atre ◽  
Keng Hsu
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Mechanical Property ◽  
High Temperature ◽  
Selective Laser Melting ◽  
Laser Melting ◽  
Step Heat Treatment ◽  
Microstructure And Mechanical Property ◽  
In Situ Heat Treatment

Selective laser melting (SLM) is one of the most widely used additive manufacturing technologies. Fabricating nickel-based superalloys with SLM has garnered significant interest from the industry and the research community alike due to the excellent high temperature properties and thermal stability exhibited by the alloys. Haynes-282 alloy, a γ′-phase strengthened Ni-based superalloy, has shown good high temperature mechanical properties comparable to alloys like R-41, Waspaloy, and 263 alloy but with better fabricability. A study and comparison of the effect of different heat-treatment routes on microstructure and mechanical property evolution of Haynes-282 fabricated with SLM is lacking in the literature. Hence, in this manuscript, a thorough investigation of microstructure and mechanical properties after a three-step heat treatment and hot isostatic pressing (HIP) has been conducted. In-situ heat-treatment experiments were conducted in a transmission electron microscopy (TEM) to study γ′ precipitate evolution. γ′ precipitation was found to start at 950 °C during in-situ heat-treatment. Insights from the in-situ heat-treatment were used to decide the aging heat-treatment for the alloy. The three-step heat-treatment was found to increase yield strength (YS) and ultimate tensile strength (UTS). HIP process enabled γ′ precipitation and recrystallization of grains of the as-printed samples in one single step.

Microstructure and Mechanical Properties of Mg-RE-B Alloys

2011 ◽  
Vol 311-313 ◽  
pp. 2251-2254
Author(s):  
Le Ping Bu ◽  
Qing Tai Shen ◽  
Pei Wu
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Room Temperature ◽  
Tensile Yield Strength ◽  
Ingot Metallurgy ◽  
Particle Structure ◽  
Promising Candidate ◽  
Excellent Mechanical Property ◽  
Before And After ◽  
Microstructure And Mechanical Property

The best is to read these instructions and follow the outline of this text. Mg-RE-B alloy with minuteness particle structure (MPS) were prepared by ingot metallurgy including as-cast and hot-extruded processing, and the microstructure and mechanical property of Mg-6RE-3B2O3 (wt%) alloys were investigated before and after hot-extruded. The Mg-RE-B alloy has satisfied grain size and particle structure, went with excellent mechanical property of tensile yield strength of 520 MPa and elongation of 5% at room temperature. The MPS Mg-RE-B alloy is a promising candidate among lightweight structural materials

Microstructure and Mechanical Property Analysis of the Metal Part by SLM

2013 ◽  
Vol 423-426 ◽  
pp. 693-698 ◽  
Author(s):  
Qun Qin ◽  
Guang Xia Chen
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Tensile Strength ◽  
Stainless Steel ◽  
Steel Powder ◽  
Stainless Steel Powder ◽  
Micro Hardness ◽  
Metal Part ◽  
Tensile Experiment ◽  
Microstructure And Mechanical Property

The objective of the research was that analyzed the microstructure and mechanical properties of metal part built by SLM in this paper. The tensile samples were made by SLM, the rupture gotten with tensile experiment was scan by SEM, and the rupture property was analyzed. The results of experiment showed: the parts formed by optimized parameters have a density above 96%, a tensile strength of 635MPa, an extension of 55.679% and an average micro hardness of HV307 for stainless steel powder. It is interesting to find that the phase of the built parts is also austenite by XRD, which is the same as that of the starting material.

Improved mechanical properties of Cu–Sn–Zn–TiO2 coatings

2019 ◽  
Vol 34 (01n03) ◽  
pp. 2040039
Author(s):  
Yuxin Wang ◽  
Weidong Gao ◽  
Zhen He ◽  
Shengping Zhang ◽  
Li Yin
Keyword(s):  
Mechanical Properties ◽  
Mechanical Performance ◽  
Nanocomposite Coating ◽  
Pulse Electrodeposition ◽  
Nanocomposite Coatings ◽  
Cross Sectional ◽  
Coating Surface ◽  
Tio2 Coatings ◽  
Surface Morphologies ◽  
Wear Tests

This study applied the pulse electrodeposition and duplex electrodeposition techniques to improve the mechanical properties of Cu–Sn–Zn–TiO2 nanocomposite coatings. The phase constituents and surface morphologies of prepared coatings were characterized. The cross-sectional information was recorded. The mechanical properties were determined by microhardness and wear tests. All the prepared coatings presented a nodular surface. Both the addition of TiO2 particles and nickel inner layer refined the coating surface. The pulse electrodeposition led to increased microhardness, while the addition of nickel inner layer further increased the mechanical performance. The best mechanical performance was achieved for the duplex Cu–Sn–Zn–TiO2/Ni nanocomposite coating prepared via pulse electrodeposition.

Microstructure and properties of TiO2 sol-enhanced black nickel nanocomposite coating

2017 ◽  
Vol 31 (16-19) ◽  
pp. 1744023
Author(s):  
Hu Bo ◽  
Fengyan Hou ◽  
See Leng Tay ◽  
Yuxin Wang ◽  
Wei Gao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Morphology ◽  
Nickel Coating ◽  
Nanocomposite Coating ◽  
Nanocomposite Coatings ◽  
Microstructure And Properties ◽  
Nickel Coatings ◽  
Tio2 Sol ◽  
Black Color ◽  
Black Nickel

Black nickel coatings are widely used in industries due to their shiny black color and other unique properties. However these coatings are normally soft, which limits their applications. In order to increase the mechanical properties of black nickel coatings, sol-enhanced technology has been applied to the plating process. TiO2 sol-enhanced black nickel nanocomposite coatings were electroplated on nickel-coated brass. A systematic study on the microstructure and properties of the black coatings were conducted. The effects of TiO2 concentration (TiO2 sol concentration in 0–20 mL/L) on the surface morphology, nanohardness and wear resistance have been studied. The results indicated that the nanohardness of the sol-enhanced black nickel coating was increased by [Formula: see text]20%. The mechanisms of improvement and surface morphology variation were also discussed.

PULSE PLATING ENHANCED Au–Co NANOCOMPOSITE COATINGS

2013 ◽  
Vol 27 (19) ◽  
pp. 1341011
Author(s):  
YING JU ◽  
YUXIN WANG ◽  
YI WEN ◽  
WEI GAO
Keyword(s):  
Mechanical Properties ◽  
Direct Current ◽  
Phase Structure ◽  
Composite Coatings ◽  
Pulse Power ◽  
Nanocomposite Coatings ◽  
X Ray Diffraction ◽  
X Ray ◽  
Nanostructured Composite ◽  
Hardening Mechanisms

This investigation described the development of a technique to produce Au – Co nanostructured composite coatings with improved hardness. Pulse power has been used with the traditional Au electroplating solution to synthesize multilayer nanocomposite coatings. The phase structure was analyzed by X-ray diffraction. Mechanical properties were investigated using nanoindentation. The results indicate that the hardness was increased to 3.15 ± 0.05 GPa , compared to 2.70 ± 0.07 GPa of that produced by the direct current Au coatings. The hardening mechanisms have also been discussed.

Microstructure and Mechanical Property along 3D Directions of AZ31 Magnesium Joint Welded by FSW

2012 ◽  
Vol 567 ◽  
pp. 187-191 ◽  
Author(s):  
Sheng Lu ◽  
Shi Yu Xiao ◽  
Fang Qi ◽  
Jing Chen
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Friction Stir Welding ◽  
Magnesium Alloys ◽  
Travel Speed ◽  
Middle Part ◽  
Three Dimensions ◽  
Friction Stir ◽  
Tensile Experiment ◽  
Microstructure And Mechanical Property

As-cast AZ31 magnesium alloys was fabricated with travel speed of 50 mm/min and rotating rate of 1500 r/min by means of friction stir welding (FSW). The microstructure and mechanical property of the joint along three dimensions (3D) directions were investigated by optical microscopy (OM) and tensile experiment. The results show that the FSW joint is characterized with asymmetric gradient in 3D. The mechanical properties of the slice decrease from the top to the bottom of joint and starting part is the weakest unit, while middle part corresponds to the strongest one.

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