Characterization of Ta-B-C nanostructured hard coatings

AbstractIn this paper, the deposition and characterization of laterally graded materials libraries (composition spread) is presented. The films have been deposited by reactive magnetron sputtering, using two or three metallic targets at a low angle to the substrate surface as well as a system of apertures. To illustrate the advantages of combinatorial approaches for the development of advanced materials, the multicomponent metastable hard coatings (Ti,Al)N and (Ti,Al,Si)N were investigated with respect to the relations between structure and composition on the one hand and the oxidation resistance of these coatings on the other.

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Transmission electron microscopy characterization of hard coatings and films: sample preparation aspects and results

Surface and Coatings Technology ◽

10.1016/0257-8972(95)02691-6 ◽

1996 ◽

Vol 80 (1-2) ◽

pp. 89-95 ◽

Cited By ~ 16

Author(s):

G. Radnóczi ◽

Á. Barna

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

Sample Preparation ◽

Hard Coatings ◽

Transmission Electron ◽

Transmission Electron Microscopy Characterization ◽

Microscopy Characterization

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SPM Characterization of Pulsed Laser Deposited Nanocrystalline CrN Hard Coatings

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2007.790 ◽

2007 ◽

Vol 7 (6) ◽

pp. 2176-2181 ◽

Cited By ~ 5

Author(s):

G. Mangamma ◽

K. Mohan Kant ◽

M. S. R. Rao ◽

S. Kalavathy ◽

M. Kamruddin ◽

...

Keyword(s):

Pulsed Laser ◽

Hard Coatings

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Abrasive wear in wear plates and hard coatings applied by welding with shielded electrode

Revista Facultad de Ingeniería ◽

10.19053/01211129.v26.n46.2017.7322 ◽

2017 ◽

Vol 26 (46) ◽

Cited By ~ 1

Author(s):

José Luddey Marulanda-Arévalo ◽

Luz Adriana Cañas-Mendoza ◽

Jairo Alberto Barón-Jaimez

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Abrasive Wear ◽

Linear Growth ◽

Hard Coatings ◽

Electric Welding ◽

The Third ◽

Hardness Tests ◽

Scanning Electron

Performance against abrasive wear was evaluated (in compliance with the ASTM G-65 standard) for both wear plates and hard coatings applied by electric welding. The characterization of the coatings was achieved by using hardness tests, optical microscopy and scanning electron microscopy (SEM). Although it was observed a direct correlation between hardness and wear resistance, a linear growth pattern was not followed. Besides the information from the hardness tests, data regarding the distribution and shape of the carbides in the welding bead are also necessary to choose the hard coating applied by welding, to protect against abrasive wear. Base metal and coatings had satisfactory joint, due to their dilution; the first welding layer had less hardness than the third welding layer.

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Scratch Test and Adhesion Properties of Titanium Coatings Deposited by TIG Welding on Steels

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1111.1 ◽

2015 ◽

Vol 1111 ◽

pp. 1-6 ◽

Cited By ~ 1

Author(s):

Elena Simona Dogar Cutean ◽

Ion Mitelea ◽

Viorel Aurel Şerban ◽

Cosmin Codrean

Keyword(s):

Scratch Test ◽

Scratch Resistance ◽

Substrate Material ◽

Point Of View ◽

Hard Coatings ◽

Process Technology ◽

Properties Of Coatings ◽

Experimental Conditions ◽

Adhesion Properties

Scratch test is one of widely used, fast, and effective methods to obtain the critical loads that are related to adhesion properties of coatings. The determination of adhesion and the scratch resistance is essential for the mechanical characterization of surface layers for research and industry. To evaluate the performance of coatings the scratch test with a Rockwell-C diamond stylus as indenter is a commonly used test for the characterization of hard coatings on predominant metallic substrates due to its comparatively robust experimental setup, the easy use and the representative results. This is the only technique capable of imaging such interface defects which are due to the stressin duced by the scratch experiment.This paper aims to characterize the adhesion and scratch resistance using Millennium200 - Technical Tribo equipment of Ti layer deposited on steel surfaces by means of TIG/WIG welding technique. Ensuring appropriate functional properties of WIG welding coatings (Ti) requires a good compatibility with the substrate material (S235). For this reason was used to deposit titanium WIG welding an intermediary layer of copper, obtained in the same experimental conditions. The optimal selection of the coating material takes into consideration the metallurgical, mechanical and process technology compatibility. The mechanical properties of coatings must match the substrate. From this point of view, maintaining a high corrosion resistance is mainly conditioned by achieving a good adhesion and a microstructure free of internal cracks or other defects.

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