Functionalized hexagonal-shaped potassium titanate/PA66 composite for improved wear resistance

2020 ◽

Vol 993 ◽

pp. 836-843

Author(s):

Ke Guo ◽

Zhi Qiang Zhang ◽

Zhong Zheng Pei ◽

Jie Xu ◽

Yi Fan Feng

Keyword(s):

Wear Resistance ◽

Friction Coefficient ◽

Abrasive Wear ◽

Wear Mechanisms ◽

Adhesive Wear ◽

Sodium Titanate ◽

Brake Pad ◽

Potassium Titanate

Here we developed a hot-pressed molded resin-based brake pad material reinforced by a nano sodium titanate whisker in comparison with nano potassium titanate whisker. The effect of the whiskers on the tribology behavior was investigated. Though nano sodium titanate whisker reinforced brake material showed higher porosity (+12.29% averagely) and lower hardness (-25.8% averagely) caused by the impurities, it exhibited improved ability in stabilizing the friction coefficient and enhancing 25.5%, 31.1%, 25.9% higher wear resistance, when the volume contents of whisker are 7.5%, 15% and 22.5%, respectively, compared to the nano potassium titanate whisker reinforced brake material. The wear mechanisms of the nano sodium titanate whisker reinforced brake materials were determined as embedded debris, delaminated crater, moderate layers transfer, uniform furrows, primary plateaus and secondary plateaus in similar size, indicating a main wear form of abrasive wear instead of adhesive wear.

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Evaluation of Tribological Performance of PTFE Composite Filled with Rare Earth Treated Potassium Titanate Whiskers

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.415-417.1252 ◽

2011 ◽

Vol 415-417 ◽

pp. 1252-1256

Author(s):

Yu Fan ◽

Qing Jun Ding ◽

Chuan Hui Liu ◽

Jia Ling Hu

Keyword(s):

Wear Resistance ◽

Rare Earth ◽

Dry Friction ◽

Interfacial Adhesion ◽

Friction Condition ◽

Optimum Amount ◽

Ptfe Composite ◽

Potassium Titanate ◽

Ptfe Composites ◽

Rare Earth Content

Optimum amount of rare earths (RE) for treating potassium titanate whiskers (PTW) surface and effects of different PTW contend on tribologieal behavior of Polytetrafluoroethylene (PTFE) composites under dry friction condition were investigated．Worn surfaces were observed and analyzed by scanning electron microscope(SEM)．Experimental results showed that the friction coefﬁcient of PTW/PTFE composites increased with the content of PTW increasing, and the composites performed the best wear resistance occurs at 5wt% PTW content. Moreover, the composites filled with treated PTW performed the best wear resistance occurs at 0.2wt% rare earth content. Under dry friction condition, PTFE composites filled with treated PTW exhibit better tribologieal performance than those of the PTFE composite filled with untreated PTW did. Rare earth elements acting as surface modifier of PTW can increase interfacial adhesion and toughness between PTW and PTFE matrix, and it improves tribologieal performance of the composites．

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Application of TEM to Deformation, Wear, and Fracture of Ceramics

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100052377 ◽

1974 ◽

Vol 32 ◽

pp. 472-473

Author(s):

B. J. Hockey

Keyword(s):

Wear Resistance ◽

High Temperature ◽

Mechanical Behavior ◽

Brittle Materials ◽

High Temperature Strength ◽

Wide Range ◽

Corrosive Environments ◽

Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

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Abrasive wear of polymer/steel gear drives

Progress in Agricultural Engineering Sciences ◽

10.1556/progress.4.2008.1 ◽

2008 ◽

Vol 4 (1) ◽

pp. 1-26

Author(s):

Gábor Kalácska

Keyword(s):

Wear Resistance ◽

Abrasive Wear ◽

Material Selection ◽

Solid Particles ◽

Soil Types ◽

General View ◽

Modern Engineering ◽

Clean Environment ◽

Engineering Polymers ◽

Plastic Gears

Research was performed on the friction, wear and efficiency of plastic gears made of modern engineering polymers and their composites both in a clean environment (adhesive sliding surfaces) and in an environment contaminated with solid particles and dust (abrasive), with no lubrication at all. The purpose is to give a general view about the results of abrasive wear tests including seven soil types as abrasive media. At the first stage of the research silicious sand was applied between the meshing gears and the wear of plastic and steel gears was evaluated and analyzed from the point of different material properties (elongation at break, hardness, yield stress, modulus of elasticity) and its combinations. The different correlations between the experienced wear and material features are also introduced. At the second stage of the project the abrasive sand was replaced with different physical soil types. The abrasive wear of gears is plotted in the function of soil types. The results highlight on the considerable role of physical soil types on abrasive wear resistance and the conclusions contain the detailed wear resistance. The results offer a new tribology database for the operation and maintenance of agricultural machines with the opportunity of a better material selection according to the dominant soil type. This can finally result longer lifetime and higher reliability of wearing plastic/steel parts.

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

Collection of Scientific Publications NUS ◽

10.15589/jnn20140407 ◽

2014 ◽

Vol 0 (4) ◽

Cited By ~ 2

Author(s):

Oleksandr M. Kostin ◽

Anastasiia Yu. Butenko ◽

Volodymyr O. Martynenko

Keyword(s):

Wear Resistance ◽

High Temperature ◽

High Temperature Wear

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Tempering and wear resistance of laser cladded MMC coating for corrugated rollers

International Congress on Applications of Lasers & Electro-Optics ◽

10.2351/1.5061206 ◽

2007 ◽

Cited By ~ 1

Author(s):

Zhaoyong Qian ◽

Minlin Zhong ◽

Wenjin Liu ◽

Dongye Zhang ◽

Ruiquan Kang

Keyword(s):

Wear Resistance

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INCREASING THE WEAR RESISTANCE OF ELEMENTS AND COMPONENTS OF FORGING AND STAMPING EQUIPMENT (FOR EXAMPLE, PERFORMING SEPARATION OPERATIONS)

STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS. In the frame of the XXIII Agribusiness Forum of the South of Russia and the Exhibition «Interagromash» Volume 1 ◽

10.23947/interagro.2020.1.686-687 ◽

2020 ◽

Author(s):

K.O. Kobzev ◽

◽

S.A. Vyalov ◽

E.S Bozhko ◽

I.A. Zolotuhina ◽

...

Keyword(s):

Wear Resistance ◽

Technological Capabilities ◽

Recoil Force ◽

The Press ◽

Strength And Durability

The article describes the possibilities of increasing the durability of crank presses. The influence of the main parameters of the press on the value of the recoil force was studied. Based on the analysis of this topic, the types of expansion of technological capabilities of crank presses and their strength and durability were summarized.

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