The history of hard CVD coatings for tool applications at the University of Technology Vienna

Haubner, Roland

doi:10.1016/j.ijrmhm.2013.01.012

Cited by 29 publications

(8 citation statements)

References 34 publications

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“…Therefore, one respective review of Roland Haubner is very essential [50]. It provides an excellent overview on the history of CVD, on coatings of metal carbides and nitrides, on the α-Al 2 O 3 CVD-process, on low pressure diamond deposition and on up to now unsuccessful BN-and BCN-coating endeavors.…”

Section: Most Important and Very Recent Review On The History Of Hardmentioning

confidence: 99%

The history of the technological progress of hardmetals

Ortner¹,

Ettmayer²,

Kolaska

2014

International Journal of Refractory Metals and Hard Materials

129

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The impressive history of hardmetals starts with the Schröter Patent and is then followed by the first hardmetal company, Krupp-WIDIA. Metallwerk Plansee has also played an important part in the search of drawing dies for tungsten wires and later as one of the important hardmetal manufacturers besides Kennametal in USA, Sandvik in Sweden and others. The further development of hardmetals is characterized by other carbide and binder combinations. TiC-based hardmetals are a great step forward for the machining of steels and so are fine grained hardmetals for a wide spectrum of applications. With the rising tendency of automation in metal cutting, indexable inserts with quite complex geometries were developed for the application in lathes and milling centers working with computer numerical control (CNC). Coating technologies by chemical vapor deposition and physical vapor deposition have greatly increased the wear resistance of hardmetals. Coating with aluminum oxide multilayers and with diamond were devised as well as compact non metallic hard materials such as diamond, cubic boron nitride, oxide and nitride ceramics as well as mixed ceramics. Cermets and their special properties are discussed as well as ultrahard ceramics for special applications. Finally a short survey of the literature on hardmetals and hard materials is given.

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Section: Most Important and Very Recent Review On The History Of Hardmentioning

confidence: 99%

The history of the technological progress of hardmetals

Ortner¹,

Ettmayer²,

Kolaska

2014

International Journal of Refractory Metals and Hard Materials

129

View full text Add to dashboard Cite

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“…Titanium and its alloys are widely used in medical devices, but they suffer from poor abrasion resistance, toxic alloying elements and long-term deterioration in physiological environments, leading to implant loosening [1][2][3][4]. Surface treatments and ceramic coatings, such as nitride compounds, have been proposed to address these issues [5][6][7]. Silicon nitride coatings have been found to increase abrasion resistance, reduce friction coefficients and have an elastic modulus closer to bone, making it a popular coating material in prosthetic joints [8].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of tribological and biological properties of Ti6Al4V coated with Si₃N₄/ND nanoparticles for orthopedic applications: a comprehensive analysis

Esmaeili,

Nemati,

Joupari

2024

Biomed. Mater.

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In this study, the biocompatibility and tribological properties of Ti6Al4V coated with Silicon Nitride (Si3N4)/Nanodiamond (ND) using the electrophoretic deposition (EPD) method were investigated. Suspensions of various aqueous and alcoholic solutions were prepared in the presence of CTAB and SDS dispersers. The most stable suspension system for the electrophoresis process was selected (aqueous media/ SDS disperser). Four different voltages (20, 30, 40, and 50 V) were applied to study the effect of voltage on the coating property. One could find that processing with 40 V obtained the best coating. The nano-composite coating was characterized using scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS), mapping analysis, and X-ray diffraction (XRD) after the coating process. The samples were then subjected to two nanoindentation and nano-scratching tests to evaluate their tribological properties. Biocompatibility was assessed in an ex vivo environment using two cell culture tests to evaluate survival and cellular adhesion. The results showed that the hardness and modulus elasticity of the coated sample increased from 85 to 124 GPa and 1.14 to 3.55 GPa, respectively, compared to the non-coated sample. Additionally, the MTT test results indicated that cellular survival and proliferation of MG63 cells increased from 86% for the non-coated sample to 92% for the Ti6Al4V/Si3N4 /ND sample. These findings have implications for orthopedic implant applications.

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“…Fundamentally new materials are needed, with increased wear resistance. This may begin with naturally occurring substances, from which follows the natural physical substance from the vapor phase (PVD) [ 1 ], the chemical substance from the vapor phase [ 2 ], the hybrid physico-chemical substance from the vapor phase [ 3 ] and thermal spraying methods [ 4 ]. Hardening technologies, such as chemical-thermal treatment (CTT) are critically important [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Technological Features for Controlling Steel Part Quality Parameters by the Method of Electrospark Alloying Using Carburezer Containing Nitrogen—Carbon Components

et al. 2022

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A new method of surface modification based on the method of electrospark alloying (ESA) using carburizer containing nitrogen—carbon components for producing coatings is considered. New processes have been proposed that include the step of applying saturating media in the form of paste-like nitrogenous and nitrogenous-carbon components, respectively, onto the surface without waiting for those media to dry, conducting the ESA process with the use of a steel electrode-tool, as well as with a graphite electrode-tool. Before applying the saturating media, an aluminium layer is applied onto the surface with the use of the ESA method at a discharge energy of Wp = 0.13–6.80 J. A saturating medium in the form of a paste was applied to the surfaces of specimens of steel C22 and steel C40. During nitriding, nitrocarburizing and carburization by ESA (CESA) processes, with an increase in the discharge energy (Wp), the thickness, micro hardness and continuity of the “white layer” coatings, as well as the magnitude of the surface roughness, increase due to saturation of the steel surface with nitrogen and/or carbon, high cooling rates, formation of non-equilibrium structures, formation of special phases, etc. In the course of nitriding, nitrocarburizing and CESA processing of steels C22 and C40, preliminary processing with the use of the ESA method by aluminum increases the thickness, microhardness and continuity of the “white layer”, while the roughness changes insignificantly. Analysis of the phase composition indicates that the presence of the aluminum sublayer leads to the formation of the aluminum-containing phases, resulting in a significant increase in the hardness and, in addition, in an increase in the thickness and quality of the surface layers. The proposed methods can be used to strengthen the surface layers of the critical parts and their elements for compressor and pumping equipment.

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The history of hard CVD coatings for tool applications at the University of Technology Vienna

Cited by 29 publications

References 34 publications

The history of the technological progress of hardmetals

The history of the technological progress of hardmetals

Evaluation of tribological and biological properties of Ti6Al4V coated with Si₃N₄/ND nanoparticles for orthopedic applications: a comprehensive analysis

Technological Features for Controlling Steel Part Quality Parameters by the Method of Electrospark Alloying Using Carburezer Containing Nitrogen—Carbon Components

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The history of hard CVD coatings for tool applications at the University of Technology Vienna

Cited by 29 publications

References 34 publications

The history of the technological progress of hardmetals

The history of the technological progress of hardmetals

Evaluation of tribological and biological properties of Ti6Al4V coated with Si3N4/ND nanoparticles for orthopedic applications: a comprehensive analysis

Technological Features for Controlling Steel Part Quality Parameters by the Method of Electrospark Alloying Using Carburezer Containing Nitrogen—Carbon Components

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Evaluation of tribological and biological properties of Ti6Al4V coated with Si₃N₄/ND nanoparticles for orthopedic applications: a comprehensive analysis