Microstructure, bonding strength, and friction–wear performance of AlCrN/nitrided layer composite coating on H13 hot work mould steel

2019 ◽  
Vol 16 (3) ◽  
pp. 951-965
Author(s):  
Wen Zhao ◽  
Dejun Kong
Keyword(s):  
Composite Coating ◽  
Bonding Strength ◽  
Nitrided Layer ◽  
Wear Performance ◽  
Layer Composite

Laser in-situ synthesis of TiB2–Al composite coating for improved wear performance

2013 ◽  
Vol 236 ◽  
pp. 200-206 ◽  
Author(s):  
Shravana Katakam ◽  
Nana Asiamah ◽  
Soundarapandian Santhanakrishnan ◽  
Narendra Dahotre
Keyword(s):  
Composite Coating ◽  
In Situ Synthesis ◽  
Wear Performance ◽  
Al Composite

scholarly journals Influence of nano-SiO2 on the bonding strength and wear resistance properties of polyurethane coating

2019 ◽  
Vol 26 (1) ◽  
pp. 77-83 ◽  
Author(s):  
Fangfang Wang ◽  
Lajun Feng ◽  
Huini Ma ◽  
Zhe Zhai ◽  
Zheng Liu
Keyword(s):  
Wear Resistance ◽  
Friction Coefficient ◽  
Wear Rate ◽  
Composite Coating ◽  
Network Structure ◽  
Bonding Strength ◽  
Coating Layer ◽  
Steel Substrate ◽  
Polyurethane Coating ◽  
Nano Sio2

Abstract To improve the wear resistance of polyurethane (PU) coating and its adhesion to the steel substrate, a series of simple and practicable techniques were designed to mix nano-SiO2 with PU powder to cast a coating layer onto the steel. When the addition of nano-SiO2 was small, a network structure of PU-SiO2 was produced. It improved the wear resistance of the composite coating and its adhesion to the steel substrate. When the addition of nano-SiO2 was excessive, agglomerated nano-SiO2 particles not only affected the bond between the PU resin and the steel substrate but also became abrasive materials, intensifying the abrasion of the composite coating during friction. It resulted in lower bonding strength and poorer wear resistance of the composite coating. The wear rate and friction coefficient of 2 wt.% SiO2/PU composite coating were 1.52×10−6 cm3/min N and 0.31, respectively. Its wear resistance was about 10 times as high as that of the pure PU coating. Furthermore, a simple and practicable installation was designed to test the bonding strength between the coating and the steel substrate. The bonding strength between 2 wt.% SiO2/PU composite coating and the steel substrate was 7.33 MPa, which was 39% higher than that of the pure PU coating.

scholarly journals Enhanced Mechanical and Tribological Capabilities of a Silicon Aluminum Alloy with an Electroplated Ni–Co–P/Si3N4 Composite Coating

Metals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 120
Author(s):  
Zhijie Li ◽  
Fei Ma ◽  
Dongshan Li ◽  
Shanhong Wan ◽  
Gewen Yi ◽  
...  
Keyword(s):  
Abrasive Wear ◽  
Composite Coating ◽  
Composite Coatings ◽  
Engine Oil ◽  
Si Substrate ◽  
Wear Performance ◽  
Cobalt Layer ◽  
Hard Chrome ◽  
Electroplating Process ◽  
Hardness Values

Ni–Co–P/Si3N4 composite coatings were fabricated over an aluminum–silicon (Al–Si) substrate using a pulse-current electroplating process, in which the rapid deposition of an intermediate nickel–cobalt layer was used to improve coating adhesion. The microstructure, mechanical, and tribological behaviors of the electroplated Ni–Co–P/Si3N4 composite coating were characterized and evaluated. The results revealed that the electroplated Ni–Co–P/Si3N4 composite coating primarily consisted of highly crystalline Ni–Co sosoloid and P, and a volumetric concentration of 7.65% Si3N4. The electroplated Ni–Co–P/Si3N4 composite coating exhibited hardness values almost two times higher than the uncoated Al–Si substrate, which was comparable to hard chrome coatings. Under lubricated and dry sliding conditions, the electroplated Ni–Co–P/Si3N4 composite coating showed excellent anti-wear performance. Whether dry or lubricated with PAO and engine oil, the composite coating showed minimum abrasive wear compared to the severe adhesive wear and abrasive wear observed in the Al–Si substrate.

Bioactive Composite Coating on Titanium Implants for Hard Tissue Repair

2007 ◽  
Vol 334-335 ◽  
pp. 1249-1252 ◽  
Author(s):  
Jin Ming Wu ◽  
Min Wang ◽  
Akiyoshi Osaka
Keyword(s):  
Composite Coating ◽  
Low Temperatures ◽  
Tissue Repair ◽  
Body Fluid ◽  
Titanium Implants ◽  
Apatite Formation ◽  
Hard Tissue ◽  
Layer Composite ◽  
Titania Layer ◽  
Hydrolysis Of

A bioactive composite coating consisting of one layer of titania and one layer of apatite was formed on Ti substrate. The first layer of crystalline titania was deposited on Ti at low temperatures either through oxidation of Ti by hydrogen peroxide solution or through hydrolysis of TiF4 or TiCl4 solution. It was shown that the crystalline titania, either in the form of anatase or rutile, induced formation of the second layer of apatite in a simulated body fluid. However, the trace elements in the titania layer affected greatly apatite formation. The Cl incorporated in the titania layer did not hinder apatite formation while F did. The two-layer composite coating should enhance bonding of Ti implants to bone tissue.

Influence of Silica on Microstructural Modification of Electrical Discharge Composite Coating and its Wear Performance

Silicon ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2375-2386 ◽  
Author(s):  
Ilangovan Arun ◽  
C. Yuvaraj ◽  
P. Jyothibabu ◽  
G. Chandra Sekhar Reddy
Keyword(s):  
Composite Coating ◽  
Electrical Discharge ◽  
Wear Performance ◽  
Microstructural Modification

Optimization of Process Parameters for Plasma Sprayed HA/ZrO2 Bioceramic Coating

2012 ◽  
Vol 161 ◽  
pp. 269-273
Author(s):  
Yu Mei Bao ◽  
Lei Wu ◽  
Li Jie Weng
Keyword(s):  
Mechanical Property ◽  
Composite Coating ◽  
Process Parameters ◽  
Bonding Strength ◽  
Measurement Methods ◽  
Influence Of Process Parameters ◽  
Optimization Of Process Parameters ◽  
Property Measurement ◽  
Titanium Alloy Substrate ◽  
Plasma Sprayed

Preparation and mechanical property measurement methods of bioceramic coating are introduced. HA/ZrO2 composite coating was prepared in the titanium alloy substrate with Plasma spraying equipment, and its bonding strength was measured. The influence of process parameters on bonding strength of plasma-sprayed HA/ZrO2 composite coating is simulated with computing software Mathematica and optimized.

Preparation and wear performance of NiCr/Cr3C2–NiCr/hBN plasma sprayed composite coating

2011 ◽  
Vol 205 (12) ◽  
pp. 3722-3728 ◽  
Author(s):  
Lingzhong Du ◽  
Chuanbing Huang ◽  
Weigang Zhang ◽  
Tiegang Li ◽  
Wei Liu
Keyword(s):  
Composite Coating ◽  
Wear Performance ◽  
Plasma Sprayed

Wear Performance of the Plasma Sprayed Fine WC-Co Composite Powders Coatings

2012 ◽  
Vol 454 ◽  
pp. 144-147
Author(s):  
Lian Wei Yang ◽  
Jin Hui Li ◽  
Yun Dong ◽  
Xiao Ping Lin
Keyword(s):  
Wear Resistance ◽  
Brittle Fracture ◽  
Composite Coating ◽  
Plasma Spraying ◽  
Composite Coatings ◽  
Composite Powders ◽  
Wear Performance ◽  
Wear And Friction ◽  
Plasma Sprayed ◽  
Increasing Load

WC/Co; Composite coating; Plasma spraying; Friction and wear Abstract: WC- Co composite powders were synthesized by direct mechanical grinding in a rotary-vibration mill under 8h, and then analyzed by SEM and XRD. WC and WC/Co composite coatings were prepared by supersonic plasma spraying fine WC-Co composite powders. The wear and friction properties of both coatings were evaluated. The results showed that the wear resistance of the WC/Co composite coating was superior to that of the WC coating. The improvement in wear resistance of the WC/Co composite coating was attributed to its higher fracture toughness and adhesion strength as well as better thermal diffusivity. As for the WC/Co composite coating, the mechanism was mainly adhesion with micro-abrasion and fatigued-induced brittle fracture within splats, and the delamination along splat boundaries only occurred at high load. However, the failure of the WC coating was predominantly detachment of transferred film and brittle fracture within the splats and delamination along splat boundaries, which were enhanced with the increasing load.

Investigation of the bonding strength of the stainless steel 316L/polyurethane/stainless steel 316L tri-layer composite produced by the warm rolling process

2018 ◽  
Vol 22 (3) ◽  
pp. 728-742
Author(s):  
Mehran Kamali Andani ◽  
Habib Daneshmanesh ◽  
Seyed Ahmad Jenabali Jahromi
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Bonding Strength ◽  
Rolling Process ◽  
Warm Rolling ◽  
Rolling Speed ◽  
Thickness Reduction ◽  
Stainless Steel 316L ◽  
Layer Composite ◽  
Preheating Temperature

In this study, a metal/polymer tri-layer composite was produced by direct adhesion (without adhesive), and mechanical locks were created using the warm rolling process. The effect of the process parameters including preheating temperature, rolling speed, thickness reduction, surface roughness, and the orientation of the surface scratches on the bond strength between layers was investigated. The results indicated that the suitable polymer fluidity and penetration, to provide stronger mechanical locks and higher bond strengths, could be achieved at an optimum preheating temperature and a rolling speed of 240°C and 36 r/min, respectively. In addition, the most appropriate surface pretreatment was obtained in the wire brush in the rolling direction mode with the surface roughness of 0.65 µm, so that the failure mechanism in this case was cohesive and the optimum thickness reduction was achieved at 40%. Furthermore, the mechanical properties of the sandwich sheet with highest bonding strength were evaluated.

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