Friction and Wear Properties of Laser Cladding Fe901 Alloy Coating on 45 Steel Surface

2019 ◽  
Vol 46 (5) ◽  
pp. 0502001
Author(s):  
陈菊芳 Chen Jufang ◽  
李小平 Li Xiaoping ◽  
薛亚平 Xue Yaping
Keyword(s):  
Laser Cladding ◽  
Friction And Wear ◽  
Steel Surface ◽  
Alloy Coating ◽  
Wear Properties ◽  
Friction And Wear Properties

Friction and Wear Properties of Laser Cladding Coatings under Boundary Lubrication Conditions

2011 ◽  
Vol 314-316 ◽  
pp. 143-146
Author(s):  
Xin Feng ◽  
Yan Qiu Xia
Keyword(s):  
Phase Composition ◽  
Laser Cladding ◽  
Friction And Wear ◽  
Liquid Paraffin ◽  
Extreme Pressure ◽  
Wear Properties ◽  
Aisi 52100 ◽  
Aisi 1045 ◽  
Aisi 52100 Steel ◽  
Friction And Wear Properties

AISI 1045 steels were laser-clad with Ni-based powder by CO2 HJ-4 coherent laser. The phase composition of the laser-cladding coating was investigated by means of X-ray diffraction (XRD). The cross-section of the cladding coating was observed using a scanning electron microscopy (SEM). The friction and wear properties of the laser cladding coatings sliding against AISI 52100 steel under the lubrication of liquid paraffin containing various anti-wear and extreme pressure additives were investigated using an Optimol SRV reciprocating motion friction and wear tester. Results showed that the laser-cladding coating considerably decreased coefficient of friction and increased wear resistance in sliding against AISI 52100 steel and attributed to the change in the hardness, phase composition of the laser-cladding coating and tribochemical reactions between the laser-cladding coating and the extreme pressure and anti-wear additives.

Friction and Wear of MoS2 Films on Etched Steel Surfaces

2008 ◽  
Author(s):  
V. Perfilyev ◽  
A. Moshkovich ◽  
K. Lutudjean ◽  
L. Rapoport
Keyword(s):  
Chemical Treatment ◽  
Friction And Wear ◽  
Steel Surface ◽  
Solid Lubricant ◽  
Surface Texturing ◽  
Roughness Parameters ◽  
Wear Properties ◽  
Wear Life ◽  
Steel Surfaces ◽  
Friction And Wear Properties

Surface texturing is one of modern technologies using for improvement friction and wear properties of rubbed surfaces. The simple and effective methods of surface texturing are mechanical or chemical treatments of friction surfaces. In this work we deal with chemical treatment of steel surfaces with following filling the profile by solid lubricant particles as MoS2. The steel surfaces were etched with phosphoric acid. The effect of time and temperature of etching on the surface roughness parameters was studied. Some standard roughness parameters of etched surface were measured. It was found that the parameters of roughness as Rz and Sm characterizing the depth of valleys and their size can be used for description of etched surfaces. Optimal parameters, Rz and Sm, providing the best tribological properties were determined: Rz = 5 ∼ 7 m and Sm = 50–70 m. The thickness of solid lubricant film was about 1 m. Finally, the tribological properties of MoS2 films on the steel surfaces textured by chemical treatment were performed. The friction coefficient and wear life of solid lubricant films was assessed. Friction and wear properties of MoS2 films on etched surfaces were compared with similar films on virgin steel surface. The wear life of MoS2 films on etched surfaces was 5–7 times larger than for solid lubricant film on mechanically treated steel surface.

Effect of Rare Earth on Microstructure and Friction and Wear Properties of Ti-Based Laser Cladding Layer

2019 ◽  
Vol 46 (9) ◽  
pp. 0903001
Author(s):  
张天刚 Tiangang Zhang ◽  
庄怀风 Huaifeng Zhuang ◽  
肖海强 Haiqiang Xiao ◽  
柏明磊 Minglei Bai ◽  
安通达 Tongda An
Keyword(s):  
Rare Earth ◽  
Laser Cladding ◽  
Friction And Wear ◽  
Wear Properties ◽  
Cladding Layer ◽  
Friction And Wear Properties

scholarly journals Effects of Surrounding Humidity on the Friction and Wear Properties of Electroless Ni-P Alloy Coating.

2000 ◽  
Vol 51 (7) ◽  
pp. 735-739 ◽  
Author(s):  
Makoto HINO ◽  
Minoru HIRAMATSU ◽  
Masato TSUJIKAWA ◽  
Makoto KAWAMOTO ◽  
Kei DEMIZU
Keyword(s):  
Friction And Wear ◽  
Alloy Coating ◽  
Wear Properties ◽  
Friction And Wear Properties ◽  
Electroless Ni

Research on Transient Behavior of Aluminium in Laser Micro-Molton Pool

2011 ◽  
Vol 284-286 ◽  
pp. 1483-1488
Author(s):  
Ai Yong Cui ◽  
Fang You Hu ◽  
Pei Zhong Zhao ◽  
Chang Liang Lu ◽  
Bin Hu ◽  
...  
Keyword(s):  
Laser Cladding ◽  
Reaction Mechanisms ◽  
Friction And Wear ◽  
Transient Behavior ◽  
Wear Properties ◽  
Ceramic Phase ◽  
Weight Percentage ◽  
Friction And Wear Properties ◽  
Cladding Layers ◽  
Al Matrix

To explore reaction mechanisms and proper effects of aluminium in laser micro-molton pool, experiments of laser cladding (Ti+1-8%Al) on Ti-6Al-4V by pulsed Nd:YAG had been carried out. The microstructures, microhardness and phases of the cladding layers with different weight percentage of Al were investigated. The content of Al was quantitatively determinated when ordering α2 ceramic phase (Ti3Al matrix) were formed. And the friction and wear properties of the cladding layers were examined in atmosphere. It was found that the microstructure of the cladding layers included cellular crystals, columnar crystals, arborescent crystals and dispersive white granules. The α2 ceramic phase was formed when the content of Al was 6%wt. With the increasing of weight percentage of Al, the number and size of arborescent crystals increased obviously, as well as the microhardness, the maximum was 957.9Hv, 1.3-1.5 times of the layers with below 6%wt Al. Inversely, the wear resistance of the laser cladding layers was improved gradually. Friction coefficient, wear extent and wear rate decreased. 0.55-0.7 times of the layers with below 6%wt Al.

Microstructure and Abrasive-Wear Behavior under High Temperature of Laser Clad Ni-Based WC Ceramic Coating

2012 ◽  
Vol 591-593 ◽  
pp. 891-895
Author(s):  
Jian Xin Kuang ◽  
Xin Heng Wang ◽  
An Min Liu
Keyword(s):  
High Temperature ◽  
Laser Cladding ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Rare Earth Oxide ◽  
Ceramic Coatings ◽  
Wear Properties ◽  
Main Mode ◽  
Cladding Layer ◽  
Friction And Wear Properties

The laser cladding is used on the surface of 4Cr14Ni14NW2Mo heat-resisting steel, In the laser cladding added 0. 5% CeO2,Ni-based WC coating can be formed. The effects of rare-earth oxide CeO2 on the microstructure and microhardness and wear-resistance and corrosion-resistance of Ni-based metal-ceramic coatings are investigated. Observing and analying the microstructure, Measuring microhardness, Checking the dry friction and wear properties of high-temperature of the coating in different temperature. The results showed that the microstructure of Ni21+20%Wc+0.5%CeO2 cladding layer is even small, Hardness is more uniform and gentle. Wear mechanism of the laser cladding layer changes with temperature changes.Abrasion is the main mode under Low temperature , it was transformed into Adhesive wear and Oxidation wear along with the increase of the temperature.dry friction and wear properties of high-temperature is excellent.

Study on Friction and Wear Properties of Plasma and Laser Coatings of Aluminium Bronze Powder

2010 ◽  
Vol 148-149 ◽  
pp. 621-627 ◽  
Author(s):  
Huai Zhi Wang ◽  
Zhi Ping Wang ◽  
Yang Lu ◽  
Ya Fei Li ◽  
Guo Qing Tian
Keyword(s):  
Laser Cladding ◽  
Friction And Wear ◽  
Testing Machine ◽  
Plasma Coating ◽  
Wear Testing ◽  
Wear Properties ◽  
Abrasive Grain ◽  
Friction And Wear Properties ◽  
Laser Coating ◽  
1045 Steel

Cu-14Al-X alloys was made into powder and then the powder was coated onto the surface of AISI 1045 steel respectively via plasma spraying and laser cladding technologies. Microstructure and phases of the coating were investigated by EPMA, XRD, SEM et al. Friction and wear properties of the two coatings were tested by RFT- friction and wear testing machine. The results indicates that the two coatings all consists of β′, α, K and γ2 phases and the structure of laser cladding is more evenly distributed. Under the condition of boundary lubrication, abrasion mechanism of laser coating remains abrasive grain abrasion. There is also adhesion abrasion under the condition of high load. While abrasion mechanism of plasma coating is slight abrasive grain abrasion and adhesion abrasion under low load. With the load increasing, adhesion abrasion intensifies. In a word, microstructure of laser coating is more even and compact.

Influence of MoS2 on the Microstructures and Properties of Ni-Based Alloying Coating

2011 ◽  
Vol 130-134 ◽  
pp. 1276-1280
Author(s):  
Bin Han ◽  
Min Peng Xue ◽  
Wang Yong ◽  
Meng Fei Yu
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Tribological Properties ◽  
Dry Friction ◽  
Friction And Wear ◽  
Composite Coatings ◽  
Wear Properties ◽  
Friction And Wear Properties ◽  
Different Content ◽  
1045 Steel

Ni/MoS2composite coatings with different content of MoS2were produced on the surface of 1045 steel by laser cladding technology. SEM and EPMA were used to analyze the microstructures and micro area compositions of the coatings. Dry friction and wear properties of the coatings were tested by friction and wear tester. The results indicate that the microstructures of Ni/MoS2composite coating are large quantities of different-form white silicides and black sulfides distributing on the substrate. The sulfides mainly consist of CrxSy, MoS2and FeS. When the content of MoS2is 9%, Ni/MoS2composite coating exhibits best tribological properties.

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