scholarly journals Tribological Performance of Microhole-Textured Carbide Tool Filled with CaF2

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1643 ◽  
Author(s):  
Wenlong Song ◽  
Shoujun Wang ◽  
Yang Lu ◽  
Zixiang Xia
Keyword(s):  
Friction And Wear ◽  
Sliding Friction ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Tribological Performance ◽  
Temperature Sensitive ◽  
Dry Cutting ◽  
Wear Performance ◽  
Lubrication Effect ◽  
Friction And Wear Characteristics

To enhance the friction and wear performance of cemented carbide, textured microholes were machined on micro Electron Discharge Machining (EDM) on the tool rake face, and Calcium Fluoride (CaF2) powders were burnished into the microholes. The friction and wear characteristics of the microhole-textured tool filled with CaF2 were investigated using sliding friction tests and dry cutting tests. Results exhibited that the working temperature could affect the tribological performance of the microhole-textured tool filled with CaF2 due to the temperature-sensitive nature of CaF2. There is no obvious lubrication effect for the textured tool filled with CaF2 at room temperature, while it was shown to be more effective in improving tribological property at a cutting speed of higher than 100 m/min with a corresponding to cutting temperature of 450 °C. The possible mechanisms for the microhole-textured tool filled with CaF2 were discussed and established.

Oil-soluble ionic liquid to lubricate silicon

2021 ◽  
pp. 135065012098488
Author(s):  
Waleed Al-Sallami ◽  
Pourya Parsaeian ◽  
Abdel Dorgham ◽  
Anne Neville
Keyword(s):  
Ionic Liquid ◽  
High Temperature ◽  
Friction And Wear ◽  
Tribological Performance ◽  
Considerable Reduction ◽  
Zinc Dialkyldithiophosphate ◽  
Lubrication Mechanism ◽  
Wear Coefficient ◽  
Wear Performance ◽  
Micro Scale

Trihexyltetradecylphosphonium bis(2-ethylhexyl)phosphate (phosphonium phosphate) ionic liquid is soluble in non-polar lubricants. It has been proposed as an effective anti-wear additive comparable to zinc dialkyldithiophosphate. Previously, phosphonium phosphate has shown a better anti-wear performance under some conditions such as high temperature. In this work, the tribological performance and the lubrication mechanism of phosphonium phosphate are compared with that of zinc dialkyldithiophosphate when lubricating silicon under various tribological conditions. This can lead to an understanding of the reasons behind the superior anti-wear performance of phosphonium phosphate under some conditions. A micro-scale study is conducted using a nanotribometer. The results show that both additives lead to a considerable reduction in both friction and wear coefficients. The reduction in the wear coefficient is mainly controlled by the formation of the tribofilm on the rubbing surfaces. Zinc dialkyldithiophosphate can create a thicker tribofilm, which results in a better anti-wear performance. However, the formation of a thicker film will lead to a faster depletion and thus phosphonium phosphate can provide better anti-wear performance when the depletion of zinc dialkyldithiophosphate starts.

scholarly journals Sliding friction and wear performance of the nano-bioceramic α-Al2O3 prepared by high energy milling

2015 ◽  
Vol 91 ◽  
pp. 151-159 ◽  
Author(s):  
Mamoun Fellah ◽  
Mohammed Abdul Samad ◽  
Mohamed Labaiz ◽  
Omar Assala ◽  
Alain Iost
Keyword(s):  
Friction And Wear ◽  
Sliding Friction ◽  
High Energy ◽  
Wear Performance ◽  
High Energy Milling ◽  
Α Al2o3

TRIBOLOGICAL EVALUATION OF STRUCTURAL CERAMICS UNDER SLIDING FRICTION

2006 ◽  
Vol 20 (25n27) ◽  
pp. 4407-4412 ◽  
Author(s):  
MIN-SOO SUH ◽  
BUP-MIN KIM ◽  
SEOCK-SAM KIM
Keyword(s):  
Silicon Carbide ◽  
Friction And Wear ◽  
Applied Load ◽  
Sliding Friction ◽  
Wear Test ◽  
Ceramic Materials ◽  
Structural Ceramics ◽  
Ceramic Ball ◽  
Disk Material ◽  
Friction And Wear Characteristics

Tribological experiments were conducted on a ball-on-disk, unlubricated, with a speed of V ≈ 140 mm/s , V ≈ 70 mm/s , with an applied load between 20 and 100N, and with different combinations of ceramic materials. A wear test was conducted on disk material zirconia with regard to various ceramic ball materials (zirconia, alumina, silicon carbide and silicon nitride). The results show that the properties of the counter materials cause a difference in friction and wear characteristics.

Experimental Investigation of the Influence of Machining Condition on the Contact Sliding Behavior of Metals

1998 ◽  
Vol 120 (2) ◽  
pp. 395-400 ◽  
Author(s):  
Dae-Eun Kim ◽  
Dong-Hwan Hwang
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Friction And Wear ◽  
Dimensional Accuracy ◽  
Tribological Performance ◽  
Cutting Condition ◽  
Sliding Motion ◽  
Machined Parts ◽  
Friction And Wear Characteristics ◽  
Counter Surface

In many instances machined parts experience sliding motion while in contact with a counter surface. The performance of the contacting parts depends on their friction and wear characteristics. In this work the effects of the machining condition on the tribological performance of steel, brass, and duralumin are investigated. For steel, it is shown that the friction coefficient value remains about the same whereas the rate of wear varies as the cutting condition is altered. The friction coefficients for brass and duralumin were lower than that of steel and their tribological properties seem to be less sensitive to the machining condition. In conclusion, it is emphasized that the machining condition directly influences the surface integrity which in turn affects the tribological performance of the machined parts, and therefore, the machining condition for parts that experience contact sliding motion should be optimized for best tribological performance in addition to dimensional accuracy and surface roughness.

Tribological Properties of the Overbased Calcium Sulfonate Complex Greases Containing Different Lubricant Additives

2013 ◽  
Vol 645 ◽  
pp. 133-136
Author(s):  
Peng Qiao ◽  
Yan Qiu Xia ◽  
Xiang Yu Ge
Keyword(s):  
Ionic Liquid ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Tribological Performance ◽  
Mining Equipment ◽  
Wear Properties ◽  
Friction Tester ◽  
Calcium Sulfonate ◽  
Friction And Wear Properties

Overbased calcium sulfonate complex greases have excellent friction and wear properties and have been widely used in metallurgy and mining equipment. The effects and tribological performance of molybdenum dialkydithiocarbamate (MoDTC) and ionic liquid 1-(2-hydroxyethyl)-3-methylimidazolium bis (trifluoromethylsulfonyl) imide ([C2OHMim][NTf2]), 1-(2-hydroxyethyl)-3-hexylimidazolium bis (trifluoromethylsulfonyl) imide ([C2OHHim][NTf2s]), added in overbased calcium sulfonate complex grease as additives were investigated by using reciprocating ball-on-disk sliding friction tester. The results showed that the two kinds of additives with a certain range of concentration could improve the tribological properties of greases.

Friction and Wear Characteristics of Aluminum Alloy Impregnated Carbon Composite

1999 ◽  
Vol 121 (2) ◽  
pp. 294-300 ◽  
Author(s):  
Hozumi Goto ◽  
Shunji Omori
Keyword(s):  
Aluminum Alloy ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Carbon Composite ◽  
Bearing Steel ◽  
Surface Films ◽  
Wear Characteristics ◽  
The Matrix ◽  
The Coefficient Of Friction ◽  
Friction And Wear Characteristics

Pin-on-disk unidirectional sliding friction and wear experiments for an aluminum alloy impregnated carbon composite in contact with a bearing steel were carried out at various levels of contact load in wet and dry air. The aluminum alloy impregnated carbon composite exhibits better friction and wear characteristics than the matrix materials, aluminum alloy and graphite in wet air. The coefficient of friction and wear rate decrease, especially at high loads in wet air. Graphite, together with metallic and oxidative wear particles, adheres to the disk sliding surface of the bearing steel, resulting in the formation of compacted, uniform surface films. The films prevent metal-to-metal contact, achieving a good sliding friction and wear condition.

ON THE EFFECT OF WOVEN GLASS FABRIC ORIENTATIONS ON WEAR AND FRICTION PROPERTIES OF POLYESTER COMPOSITE

2007 ◽  
Vol 14 (03) ◽  
pp. 489-497 ◽  
Author(s):  
B. F. YOUSIF ◽  
N. S. M. EL-TAYEB
Keyword(s):  
Wear Resistance ◽  
Friction And Wear ◽  
Tribological Performance ◽  
Glass Fabric ◽  
Low Velocity ◽  
Wear And Friction ◽  
Polyester Composite ◽  
Pin On Disc ◽  
Friction And Wear Characteristics ◽  
Worn Surfaces

In this work, tribological investigations on the neat polyester (NP) and woven (600 g/m2)-glass fabric reinforced polyester (WGRP) composite were carried out. Friction and wear characteristics of the WGRP composite were measured in three principal orientations, i.e., sliding directions relative to the woven glass fabric (WGF) orientations in the composites. These are longitudinal (L), transverse (T), and parallel (P) orientations. The experiments were conducted using a pin-on-disc (POD) machine under dry sliding conditions against a smooth stainless steel counterface. Results of friction coefficient and wear resistance of the composites were presented as function of normal loads (30–100 N) and sliding distances (0.5–7 km) at different sliding velocities, 1.7, 2.8, and 3.9 m/s. Scanning electron microscopy (SEM) was used to study the mechanisms of worn surfaces. Experimental results revealed that woven glass fabric improved the tribological performance of neat polyester in all three tested orientations. In L-orientation, at a low velocity of 1.7 m/s, WGRP exhibited significant improvements to wear resistance of the polyester composite compared to other orientations. Meanwhile, at high velocities (2.8 and 3.9 m/s), T-orientation gave higher wear resistance. SEM microphotographs showed different damage features on the worn surfaces, i.e., deformation, cracks, debonding of fiber, and microcracks.

Sign in / Sign up

Export Citation Format

Share Document