Application of the indentation method for cracking resistance evaluation of hard coatings on tool steels

2009 ◽  
Vol 15 (4) ◽  
pp. 309 ◽  
Author(s):  
A Sivitski ◽  
A Gregor ◽  
M Saarna ◽  
P Kulu ◽  
F Sergejev
Keyword(s):  
Hard Coatings ◽  
Tool Steels ◽  
Cracking Resistance ◽  
Indentation Method ◽  
Resistance Evaluation

Properties and Performance of Hard Coatings on Tool Steels under Cyclic Indentation

2009 ◽  
Vol 13 (3) ◽  
pp. 84-95 ◽  
Author(s):  
Alina Sivitski ◽  
Andre Gregor ◽  
Mart Saarna ◽  
Priit Kulu ◽  
Fjodor Sergejev
Keyword(s):  
Hard Coatings ◽  
Tool Steels ◽  
Cyclic Indentation ◽  
And Performance

Fatigue properties of Ti-based hard coatings deposited onto tool steels

2001 ◽  
Vol 142-144 ◽  
pp. 117-124 ◽  
Author(s):  
M. Stoiber ◽  
M. Panzenböck ◽  
C. Mitterer ◽  
C. Lugmair
Keyword(s):  
Hard Coatings ◽  
Fatigue Properties ◽  
Tool Steels

EFFECT OF COATING THICKNESS ON THE PROPERTIES OF TiN COATINGS DEPOSITED ON TOOL STEELS USING CATHODIC ARC PVD TECHNIQUE

2008 ◽  
Vol 15 (04) ◽  
pp. 401-410 ◽  
Author(s):  
A. MUBARAK ◽  
PARVEZ AKHTER ◽  
ESAH HAMZAH ◽  
MOHD RADZI HJ. MOHD TOFF ◽  
ISHTIAQ A. QAZI
Keyword(s):  
Surface Morphology ◽  
Tool Steel ◽  
Coating Thickness ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Testing Machine ◽  
High Speed Steel ◽  
Hard Coatings ◽  
Tool Steels ◽  
Cathodic Arc

Titanium nitride ( TiN ) widely used as hard coating material, was coated on tool steels, namely on high-speed steel (HSS) and D2 tool steel by physical vapor deposition method. The study concentrated on cathodic arc physical vapor deposition (CAPVD), a technique used for the deposition of hard coatings for tooling applications, and which has many advantages. The main drawback of this technique, however, is the formation of macrodroplets (MDs) during deposition, resulting in films with rougher morphology. Various standard characterization techniques and equipment, such as electron microscopy, atomic force microscopy, hardness testing machine, scratch tester, and pin-on-disc machine, were used to analyze and quantify the following properties and parameters: surface morphology, thickness, hardness, adhesion, and coefficient of friction (COF) of the deposited coatings. Surface morphology revealed that the MDs produced during the etching stage, protruded through the TiN film, resulting in film with deteriorated surface features. Both coating thickness and indentation loads influenced the hardness of the deposited coatings. The coatings deposited on HSS exhibit better adhesion compared to those on D2 tool steel. Standard deviation indicates that the coating deposited with thickness around 6.7 μm showed the most stable trend of COF versus sliding distance.

Cracking resistance evaluation of asphalt binders subjected to different laboratory and field aging conditions

2019 ◽  
Vol 20 (sup2) ◽  
pp. S663-S677 ◽  
Author(s):  
Patrícia Hennig Osmari ◽  
Leni Figueiredo Mathias Leite ◽  
Francisco Thiago Sacramento Aragão ◽  
Margareth Carvalho Coutinho Cravo ◽  
Luciana Nogueira Dantas ◽  
...  
Keyword(s):  
Asphalt Binders ◽  
Cracking Resistance ◽  
Resistance Evaluation ◽  
Aging Conditions

Determination of Boron Diffusion Coefficients in Borided Tool Steels

2009 ◽  
Vol 283-286 ◽  
pp. 681-686 ◽  
Author(s):  
Ivan Campos-Silva ◽  
M. Ortíz-Domínguez ◽  
N. López-Perrusquia ◽  
R. Escobar Galindo ◽  
O.A. Gómez-Vargas ◽  
...  
Keyword(s):  
Diffusion Coefficients ◽  
Mass Gain ◽  
Treatment Temperature ◽  
Hard Coatings ◽  
Material Surface ◽  
Boron Diffusion ◽  
Tool Steels ◽  
Diffusion Controlled ◽  
Aisi H13 ◽  
Boriding Process

The boron diffusion in the Fe2B and FeB borided phases formed at the surface of AISI H13 tool steels during the paste boriding process was estimated. The treatment was carried out at temperatures of 1173, 1223 and 1273 K with 2, 4, 6 and 8 h exposure times for each temperature using a 4 mm layer thickness of boron carbide paste over the material surface. The boride layers were characterized by the GDOES technique to determine in quantitative form the presence of the alloying elements on the borided phases. The boron diffusion coefficients and were determined by the mass balance equation and the boride incubation time assuming that the boride layers obey the parabolic growth law. Also, the mass gain produced by both boride layers at the surface of the tool steels was determined. Finally, the boron diffusion coefficients were interpreted as a function of the treatment temperature, obtaining the activation energy values for the diffusion controlled growth of Fe2B and FeB hard coatings.

Cracking Resistance and Impact Wear of Thin and Thick Hard Coatings Under Cyclic Loading

2012 ◽  
pp. 574-589
Author(s):  
Priit Kulu ◽  
Mart Saarna ◽  
Fjodor Sergejev ◽  
Andrei Surženkov ◽  
Alina Sivitski
Keyword(s):  
Cyclic Loading ◽  
Hard Coatings ◽  
Impact Wear ◽  
Cracking Resistance

scholarly journals Improved Adhesion and Tribological Properties of AlTiN-TiSiN Coatings Deposited by DCMS and HiPIMS on Nitrided Tool Steels

Coatings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1175
Author(s):  
Adrián Claver ◽  
Jesús J. Randulfe ◽  
José F. Palacio ◽  
Jonathan Fernández de Ara ◽  
Eluxka Almandoz ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Physical Vapor Deposition ◽  
Cutting Tools ◽  
High Hardness ◽  
Industrial Applications ◽  
Hard Coatings ◽  
Tool Steels ◽  
Adhesive Properties ◽  
Forming Tools ◽  
Scratch Tests

Hard coatings, such as AlTiN-TiSiN, deposited by Physical Vapor Deposition (PVD) techniques are widely used in industrial applications to protect and increase the lifetime of industrial components, such as cutting tools, dies, and forming tools. Despite their great properties, such as high hardness and wear and oxidation resistance, they are limited in cases of severe conditions due to the poor adhesion between the coating and the substrate. Duplex treatments have commonly been used to improve the adhesive properties of PVD coatings, especially those of the cathodic arc evaporation type. The purpose of this study is to achieve coatings with the good properties of the Magnetron Sputtering processes but with higher adhesion than that achieved with these techniques, thus achieving coatings that can be used under the most severe conditions. In this work, an AlTiN-TiSiN coating was deposited by a combination of DC Magnetron Sputtering (DCMS) and High-Power Impulse Magnetron Sputtering (HiPIMS) after a gas nitriding pretreatment on 1.2379 and Vanadis 4 tool steels. Mechanical (ultra-microhardness and scratch tests) and tribological tests were carried out to study the improvement in the properties of the coating. Duplex-treated samples showed improved adhesion between the coating and the substrate, with second critical load (Lc2) values greater than 100 N. Furthermore, they showed great toughness and wear resistance. These results show that this type of coating technique could be used in the most extreme applications and that they can compete with other techniques and coatings that to date they have not been able to compete with.

Galling resistance evaluation of tool steels by two different laboratory test methods for sheet metal forming

2012 ◽  
Vol 24 (6) ◽  
pp. 263-272 ◽  
Author(s):  
P. Karlsson ◽  
J. Eriksson ◽  
A. Gåård ◽  
P. Krakhmalev ◽  
M. Olsson ◽  
...  
Keyword(s):  
Laboratory Test ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Test Methods ◽  
Tool Steels ◽  
Resistance Evaluation
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