Effects of Nano-Al2O3p on High Temperature Frictional Wear Behaviors of NiCoCrAIY Cladded Coatings

2012 ◽  
Vol 426 ◽  
pp. 40-43 ◽  
Author(s):  
Hong Yu Wang ◽  
Dun Wen Zuo ◽  
X.F. Li ◽  
Ming Di Wang ◽  
Y.F. Zhao
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Wear Rate ◽  
Protective Coating ◽  
Oxidation Behavior ◽  
Frictional Coefficient ◽  
Nano Particles ◽  
High Temperature Wear ◽  
Frictional Wear ◽  
Super Alloy

To study effects of nano-Al2O3p (nanometric Al2O3 particles) on high temperature frictional wear behaviors of the NiCoCrAlY coating (a high temperature protective coating), three NiCoCrAlY coatings strengthened by different contents of nano-Al2O3p were prepared on a Ni-based super alloy by using laser cladding technology and their dry frictional wear behaviors at 500 °C in static air were investigated. The comparison was made with the coating without nano-particles. The results show that the frictional coefficient of the coatings increased with the hardness after adding nano-Al2O3p and the wear resistance of the coatings was enhanced. Among nano-Al2O3p-added coatings, the coating added with 1.0 wt% nano-Al2O3p performs best. The wear rate of the coating is only 58% of the coating without nano-particles. Moreover, the improvement of the oxidation behavior plays an important role in improving the high temperature wear resistance.

Comparative high-temperature wear resistance of CHS88U-VI alloy and H30N50YU5T2 satellite

2014 ◽  
Vol 0 (4) ◽  
Author(s):  
Oleksandr M. Kostin ◽  
Anastasiia Yu. Butenko ◽  
Volodymyr O. Martynenko
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
High Temperature Wear

Effect of High Temperature on Wear Behavior of Stir Cast Aluminium/Boron Carbide Composites

2020 ◽  
Vol 22 (4) ◽  
pp. 1031-1046
Author(s):  
X. Canute ◽  
M. C. Majumder
Keyword(s):  
High Temperature ◽  
Wear Rate ◽  
Boron Carbide ◽  
Wear Behavior ◽  
Base Alloy ◽  
Weight Fraction ◽  
Sliding Velocity ◽  
Wear Properties ◽  
High Temperature Wear ◽  
The Matrix

AbstractThe need for development of high temperature wear resistant composite materials with superior mechanical properties and tribological properties is increasing significantly. The high temperature wear properties of aluminium boron carbide composites was evaluated in this investigation. The effect of load, sliding velocity, temperature and reinforcement percentage on wear rate was determined by the pin heating method using pin heating arrangement. The size and structure of base alloy particles change considerably with an increase of boron carbide particles. The wettability and interface bonding between the matrix and reinforcement enhanced by the addition of potassium flurotitanate. ANOVA technique was used to study the effect of input parameters on wear rate. The investigation reveals that the load had higher significance than sliding velocity, temperature and weight fraction. The pin surface was studied with a high-resolution scanning electron microscope. Regression analysis revealed an extensive association between control parameters and response. The developed composites can be used in the production of automobile parts requiring high wear, frictional and thermal resistance.

Characteristics, high temperature wear and oxidation behavior of boride layer grown on nimonic 80A Ni-based superalloy

2021 ◽  
Vol 409 ◽  
pp. 126906
Author(s):  
Ali Günen ◽  
Kadir Mert Döleker ◽  
Mehmet Erdi Korkmaz ◽  
Mustafa Sabri Gök ◽  
Azmi Erdogan
Keyword(s):  
High Temperature ◽  
Oxidation Behavior ◽  
Boride Layer ◽  
High Temperature Wear ◽  
Nimonic 80A

scholarly journals EFFECT OF DIFFRENT LOADS ON THE WEAR BEHAVIORS OF 5Cr5Mo2V STEEL AT 700 °C

2021 ◽  
Vol 55 (6) ◽  
Author(s):  
Zhixiong Bai ◽  
Hang Yang ◽  
Ning Su ◽  
Xiaochun Wu
Keyword(s):  
High Temperature ◽  
Crack Initiation ◽  
Wear Rate ◽  
Wear Behavior ◽  
Oxidative Wear ◽  
Test Load ◽  
High Temperature Wear ◽  
Holding Power ◽  
The Matrix ◽  
Matrix Evolution

The effect of different loads on the high-temperature wear behavior of 5Cr5Mo2V steel at 700 °C was investigated. Wear morphologies, oxide compositions and matrix evolution were studied. The results showed that the wear rate increased with an increased test load, and the wear mechanism transformed from abrasive-oxidative wear to adhesive-oxidative wear. The relation between a delaminated oxide layer and cracks in the matrix were investigated. The exfoliation of carbides and displacement difference between the matrix and carbides caused a crack initiation. The wear rate strongly related to carbides, and coarse M6C carbides with poor holding power led to a high wear rate. Besides, a diagram of wear characteristics under different loads was suggested in this work.

scholarly journals Influence of Ni and Cr on the high-temperature wear resistance of FeNiCrAl coatings

2019 ◽  
Vol 12 ◽  
pp. 959-969 ◽  
Author(s):  
Haoliang Tian ◽  
Changliang Wang ◽  
Mengqiu Guo ◽  
Zhihui Tang ◽  
Shicheng Wei ◽  
...  
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
High Temperature Wear

scholarly journals Improvement of High Temperature Wear Behavior of In-Situ Cr3C2-20 wt. % Ni Cermet by Adding Mo

Crystals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 682
Author(s):  
Liang Sun ◽  
Wenyan Zhai ◽  
Hui Dong ◽  
Yiran Wang ◽  
Lin He
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Wear Mechanism ◽  
Room Temperature ◽  
Wear Behavior ◽  
Ceramic Particle ◽  
High Temperature Wear ◽  
The Coefficient Of Friction ◽  
Mo Content

Cr3C2-Ni cermet is a kind of promising material especially for wear applications due to its excellent wear resistance. However, researches were mainly concentrated on the experiment condition of room temperature, besides high-temperature wear mechanism of the cermet would be utilized much potential applications and also lack of consideration. In present paper, the influence of Mo content on the high-temperature wear behavior of in-situ Cr3C2-20 wt. % Ni cermet was investigated systematically. The friction-wear experiment was carried out range from room temperature to 800 °C, while Al2O3 ceramic was set as the counterpart. According to experimental results, it is indicated that the coefficient of friction (COF) of friction pairs risen at the beginning of friction stage and then declined to constant, while the wear rate of Cr3C2-20 wt. % Ni cermet risen continuously along with temperature increased, which attributes to the converted wear mechanism generally from typical abrasive wear to severe oxidation and adhesive wear. Generally, the result of wear resistance was enhanced for 13.4% (at 400 °C) and 31.5% (at 800 °C) by adding 1 wt. % Mo. The in-situ newly formed (Cr, Mo)7C3 ceramic particle and the lubrication phase of MoO3 can effectively improve the wear resistance of Cr3C2-20 wt. % Ni cermet.

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