Advances in Tribology最新文献_第10页

Surface Layer States of Worn Uncoated and TiN-Coated WC/Co-Cemented Carbide Cutting Tools after Dry Plain Turning of Carbon Steel 碳钢干素车削后未涂层和镀锡涂层WC/ co硬质合金刀具磨损的表层状态

IF 2.6

Advances in Tribology Pub Date : 2013-02-24 DOI: 10.1155/2013/519686

J. Kümmel, K. Poser, F. Zanger, J. Michna, V. Schulze

{"title":"Surface Layer States of Worn Uncoated and TiN-Coated WC/Co-Cemented Carbide Cutting Tools after Dry Plain Turning of Carbon Steel","authors":"J. Kümmel, K. Poser, F. Zanger, J. Michna, V. Schulze","doi":"10.1155/2013/519686","DOIUrl":"https://doi.org/10.1155/2013/519686","url":null,"abstract":"Analyzing wear mechanisms and developments of surface layers in WC/Co-cemented carbide cutting inserts is of great importance for metal-cutting manufacturing. By knowing relevant processes within the surface layers of cutting tools during machining the choice of machining parameters can be influenced to get less wear and high tool life of the cutting tool. Tool wear obviously influences tool life and surface integrity of the workpiece (residual stresses, surface quality, work hardening, etc.), so the choice of optimised process parameters is of great relevance. Vapour-deposited coatings on WC/Co-cemented carbide cutting inserts are known to improve machining performance and tool life, but the mechanisms behind these improvements are not fully understood. The interaction between commercial TiN-coated and uncoated WC/Co-cemented carbide cutting inserts and a normalised SAE 1045 steel workpiece was investigated during a dry plain turning operation with constant material removal under varied machining parameters. Tool wear was assessed by light-optical microscopy, scanning electron microscopy (SEM), and EDX analysis. The state of surface layer was investigated by metallographic sectioning. Microstructural changes and material transfer due to tribological processes in the cutting zone were examined by SEM and EDX analyses.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"2013 1","pages":"519686"},"PeriodicalIF":2.6,"publicationDate":"2013-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/519686","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64430333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Journal Bearings Lubrication Aspect Analysis Using Non-Newtonian Fluids 使用非牛顿流体的滑动轴承润滑方面分析

IF 2.6

Advances in Tribology Pub Date : 2013-02-04 DOI: 10.1155/2013/212568

A. Nessil, S. Larbi, H. Belhaneche, M. Malki

引用次数: 23

Atomistic Frictional Properties of the C(100)2x1-H Surface C(100)2x1-H表面的原子摩擦性质

IF 2.6

Advances in Tribology Pub Date : 2013-02-03 DOI: 10.1155/2013/850473

P. Jones, Huan Tang, Y. Hsia, Xiaoping Yan, J. Kiely, Junwei Huang, C. Platt, Xiaoding Ma, M. Stirniman, Lang Dinh

{"title":"Atomistic Frictional Properties of the C(100)2x1-H Surface","authors":"P. Jones, Huan Tang, Y. Hsia, Xiaoping Yan, J. Kiely, Junwei Huang, C. Platt, Xiaoding Ma, M. Stirniman, Lang Dinh","doi":"10.1155/2013/850473","DOIUrl":"https://doi.org/10.1155/2013/850473","url":null,"abstract":"Density functional theory- (DFT-) based ab initio calculations were used to investigate the surface-to-surface interaction and frictional behavior of two hydrogenated C(100) dimer surfaces. A monolayer of hydrogen atoms was applied to the fully relaxed C(100)2x1 surface having rows of C=C dimers with a bond length of 1.39 A. The obtained C(100)2x1-H surfaces (C–H bond length 1.15 A) were placed in a large vacuum space and translated toward each other. A cohesive state at a surface separation of 4.32 A that is stabilized by approximately 0.42 eV was observed. An increase in the charge separation in the surface dimer was calculated at this separation having a 0.04 e transfer from the hydrogen atom to the carbon atom. The Mayer bond orders were calculated for the C–C and C–H bonds and were found to be 0.962 and 0.947, respectively. σ C–H bonds did not change substantially from the fully separated state. A significant decrease in the electron density difference between the hydrogen atoms on opposite surfaces was seen and assigned to the effects of Pauli repulsion. The surfaces were translated relative to each other in the (100) plane, and the friction force was obtained as a function of slab spacing, which yielded a 0.157 coefficient of friction.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"2013 1","pages":"1-11"},"PeriodicalIF":2.6,"publicationDate":"2013-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/850473","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64286483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Experimental Determination of Cutting Power for Turning and Material Removal Rate for Drilling of AA 6061-T6 Using Vegetable Oils as Cutting Fluid 植物油切削液对AA 6061-T6车削切削功率和钻孔材料去除率的实验测定

IF 2.6

Advances in Tribology Pub Date : 2013-01-21 DOI: 10.1155/2013/362931

Y. Shashidhara, S. R. Jayaram

引用次数: 27

Dry Sliding Friction and Wear Studies of Fly Ash Reinforced AA-6351 Metal Matrix Composites 粉煤灰增强AA-6351金属基复合材料干滑动摩擦磨损研究

IF 2.6

Advances in Tribology Pub Date : 2013-01-21 DOI: 10.1155/2013/365602

M. Uthayakumar, S. T. Kumaran, S. Aravindan

引用次数: 60

Lubrication Regimes in High-Performance Polymer Spur Gears 高性能聚合物直齿齿轮的润滑机制

IF 2.6

Advances in Tribology Pub Date : 2013-01-16 DOI: 10.1155/2013/987251

K. Dearn, Thomas Hoskins, L. Andrei, D. Walton

引用次数: 35

Nanorheometry of Molecularly Thin Liquid Lubricant Films Coated on Magnetic Disks 涂覆在磁盘上的分子薄液体润滑膜的纳米流变学研究

IF 2.6

Advances in Tribology Pub Date : 2012-12-30 DOI: 10.1155/2012/209630

S. Itoh, Y. Hamamoto, Koki Ishii, K. Fukuzawa, Hedong Zhang

引用次数: 0

Dependence of Pin Surface Roughness for Friction Forces of Ultrathin Perfluoropolyether Lubricant Film on Magnetic Disks by Pin-on-Disk Test 针对盘试验研究超薄全氟聚醚润滑膜表面粗糙度对磁盘摩擦力的影响

IF 2.6

Advances in Tribology Pub Date : 2012-12-26 DOI: 10.1155/2012/923818

H. Tani, Y. Mitsuya, T. Kitagawa, N. Tagawa

引用次数: 0

Mechanical and Tribological Properties of PVD-Coated Cemented Carbide as Evaluated by a New Multipass Scratch-Testing Method 用一种新的多道划痕测试方法评价pvd涂层硬质合金的力学和摩擦学性能

IF 2.6

Advances in Tribology Pub Date : 2012-12-19 DOI: 10.1155/2012/305209

M. Fallqvist, R. M'Saoubi, J. Andersson, M. Olsson

{"title":"Mechanical and Tribological Properties of PVD-Coated Cemented Carbide as Evaluated by a New Multipass Scratch-Testing Method","authors":"M. Fallqvist, R. M'Saoubi, J. Andersson, M. Olsson","doi":"10.1155/2012/305209","DOIUrl":"https://doi.org/10.1155/2012/305209","url":null,"abstract":"A new test method based on multipass scratch testing has been developed for evaluating the mechanical and tribological properties of thin, hard coatings. The proposed test method uses a pin-on-disc tribometer and during testing a Rockwell C diamond stylus is used as the “pin” and loaded against the rotating coated sample. The influence of normal load on the number of cycles to coating damage is investigated and the resulting coating damage mechanisms are evaluated by posttest scanning electron microscopy. The present study presents the test method by evaluating the performance of Ti0.86Si0.14N, Ti0.34Al0.66N, and (Al0.7Cr0.3)2O3 coatings deposited by cathodic arc evaporation on cemented carbide inserts. The results show that the test method is quick, simple, and reproducible and can preferably be used to obtain relevant data concerning the fatigue, wear, chipping, and spalling characteristics of different coating-substrate composites. The test method can be used as a virtually nondestructive test and, for example, be used to evaluate the fatigue and wear resistance as well as the cohesive and adhesive interfacial strength of coated cemented carbide inserts prior to cutting tests.","PeriodicalId":44668,"journal":{"name":"Advances in Tribology","volume":"2012 1","pages":"305209"},"PeriodicalIF":2.6,"publicationDate":"2012-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2012/305209","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64311482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Non-Newtonian Effects on the Squeeze Film Characteristics between a Sphere and a Flat Plate: Rabinowitsch Model 球面与平板间挤压膜特性的非牛顿效应:Rabinowitsch模型

IF 2.6

Advances in Tribology Pub Date : 2012-12-18 DOI: 10.1155/2012/571036

U. P. Singh, R. S. Gupta

引用次数: 15