HARD WITH LOW-FRICTION COATING LAYERS FOR CUTTING TOOLS

2002 ◽  
Vol 38 (04) ◽  
pp. 155 ◽  
Author(s):  
He Huang
Keyword(s):  
Cutting Tools ◽  
Low Friction ◽  
Coating Layers

Sputtered Coatings Based on the Al2Au Phase

2004 ◽  
Vol 842 ◽  
Author(s):  
Christian Mitterer ◽  
Helmut Lenhart ◽  
Paul H. Mayrhofer ◽  
Martin Kathrein
Keyword(s):  
Product Differentiation ◽  
Cutting Tools ◽  
Hard Coatings ◽  
Low Friction ◽  
Fine Grained ◽  
Transition Metal Nitride ◽  
Lubricating Layer ◽  
Cemented Carbide Tool ◽  
Coated Cemented Carbide ◽  
Lubricating Properties

ABSTRACTTransition metal nitride-based, wear-resistant hard coatings on cutting tools and other substrates often lack distinct colorations allowing product differentiation and self-lubricating properties. In the present work, the possibility of achieving these objectives for sputtered coatings based on the purple-red Al2Au phase within the Al-Au system was investigated. Coatings were characterized with respect to morphology, chemical and phase composition, hardness, optical, oxidation and tribological properties. Al2Au-containing coatings were deposited with dense, fine-grained structures yielding a hardness of 4 GPa and pink coloration. The coatings were stable up to about 850°C, where the onset of oxidation occurs. Low friction coefficients against alumina were achieved between 500 and 700°C. The concept of applying Al2Au-containing coatings as a colored self-lubricating layer on top of a hard coated cemented carbide tool warrants further investigations.

Multi-Functional Cr–Al–Ti–Si–N Nanocomposite Films Deposited on WC-Co Substrate for Cutting Tools

2020 ◽  
Vol 20 (7) ◽  
pp. 4390-4393 ◽  
Author(s):  
Wang Ryeol Kim ◽  
Sungbo Heo ◽  
Jun-Ho Kim ◽  
In-Wook Park ◽  
Wonsub Chung
Keyword(s):  
Thin Films ◽  
Cutting Tools ◽  
Ambient Air ◽  
Nanocomposite Films ◽  
Low Friction ◽  
Cathodic Arc Evaporation ◽  
Oxidation Properties ◽  
Si Content ◽  
Arc Evaporation ◽  
Cathodic Arc

Multi-functional quinary Cr–Al–Ti–Si–N thin films were deposited onto WC-Co substrates using a cathodic arc evaporation system. In this study, the influence of silicon contents on the microstructure, mechanical, tribological, and oxidation properties of Cr–Al–Ti–Si–N thin films were systematically investigated and correlated for application of cutting tools. Based on results from various analyses, the Cr–Al–Ti–Si–N films showed excellent properties including mechanical, tribological, oxidation and adhesion values compared with those of the Cr–Al–Ti–N film. The Cr–Al–Ti–Si–N films with a Si content of around 4.21 at.% exhibited the highest hardness of 45 GPa, very low friction coefficient of 0.38 at room temperature against an Inconel alloy ball and superior adhesion property (105 N). The Cr–Al–Ti–Si–N films also showed excellent oxidation resistance after annealing in the ambient air at 1000 °C. Therefore, the Cr–Al–Ti–Si(4.21 at.%)–N films could be help to improve the performance of machining and cutting tools with application of the films.

Applicability of DLC and WC/C low friction coatings on Al2O3/TiCN mixed ceramic cutting tools for dry machining of hardened 52100 steel

2020 ◽  
Vol 46 (8) ◽  
pp. 11889-11897 ◽  
Author(s):  
Ch Sateesh Kumar ◽  
Himadri Majumder ◽  
Akhtar Khan ◽  
Saroj Kumar Patel
Keyword(s):  
Cutting Tools ◽  
Dry Machining ◽  
Low Friction ◽  
Mixed Ceramic

Study of the effect of surface laser texture on tribological properties of cemented carbide materials

2020 ◽  
Vol 234 (6-7) ◽  
pp. 993-1006
Author(s):  
Na Zhang ◽  
Fazhan Yang ◽  
Fulin Jiang ◽  
Guohua Liu
Keyword(s):  
Titanium Alloy ◽  
Friction Coefficient ◽  
Cutting Tools ◽  
Surface Texturing ◽  
Potential Method ◽  
Cemented Carbide ◽  
Textured Surface ◽  
Low Friction ◽  
Dry Cutting ◽  
Groove Texture

Surface texturing has become a potential method to obtain a low friction coefficient under dry/lubricated conditions for different mechanical product surfaces. The mechanism of friction and wear reduction from a micro-texture on the surface of cemented carbide cutting tools was investigated by dry cutting a titanium alloy. Three kinds of micro-textures, namely, line, sinusoidal and rhombic grooves, with different area occupancy rates were produced by a laser on the cemented carbide surface. Experiments and finite element simulation of ABAQUS were used to investigate the tribological characteristics of micro-textured cemented carbide. The results indicated that the line-textured cemented carbide with an area occupancy rate of 10% showed a low friction coefficient of 0.076, which is approximately 34% of the non-textured sample. Few adhesives appeared on the textured surface, while a large number of adhesives were attached to the smooth surface after 30 min of dry friction between the cemented carbide and the titanium alloy balls. Moreover, among the three textures, the line-groove texture has the smallest friction coefficient and a good anti-wear effect. The results show that the existence of a groove texture can effectively reserve the wear debris, reduce the bond wear and weaken the furrow effect.

scholarly journals Adhesion Behavior of PVD-coated Cutting Tools

2020 ◽  
Vol 3 (2) ◽  
pp. 61-64
Author(s):  
Enikő Réka Fábián ◽  
Richard Horváth
Keyword(s):  
Cutting Tool ◽  
Wear Behavior ◽  
Cutting Tools ◽  
Scratch Test ◽  
Adhesion Properties ◽  
Carbide Cutting Tool ◽  
Adhesion Behavior ◽  
Significant Difference ◽  
Dry Conditions ◽  
Coating Layers

AbstractCutting with TiAlN or CrAlN tip PVD-coated tungsten carbide-based inserts manufactured by powder metallurgy, we found no significant difference in the wear behavior of inserts regardless of whether the insert was used in wet or dry conditions. We determined the adhesion properties of the coating layers with a scratch test and by Daimler–Benz test. On the tungsten-based carbide cutting tool, the thinner TiAlN coating showed slightly better adhesion than the thicker CrAlN coating.

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