Optimization of the EMS process parameters in compocasting of high-wear-resistant Al-nano-TiC composites

AbstractSensitisation to immunologically active elements like chromium, cobalt or nickel and debris particle due to wear are serious problems for patients with metallic implants. We tested the approach of using a hard and thick ceramic coating as a wear-resistant protection of titanium implants, avoiding those sensitisation and foreign body problems. We showed that the process parameters strongly influence the coating porosity and, as a consequence, also its hardness.

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Optimization of Process Parameters for Detonation Gun Coating Process through Greyrelation Analysis

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.592-594.636 ◽

2014 ◽

Vol 592-594 ◽

pp. 636-640

Author(s):

K.N. Balan ◽

S. Manimaran ◽

M.A. Essam Ahamed ◽

Amaladas John Rajan

Keyword(s):

Process Parameters ◽

Spray Coating ◽

Aviation Industry ◽

Optimum Process ◽

Coating Process ◽

Micro Hardness ◽

Wear Resistant ◽

Optimization Of Process Parameters ◽

Marine Industry ◽

Detonation Gun

Detonation gun spray coating method (D-Spray) is an effective method of coating process [4]. The surface property of material will be enhanced by deposition of coating powders such as metal oxides and ceramics like aluminium oxides, tungsten carbide, nickel chromium etc. which improves micro hardness, corrosion and wear resistant resistance property. This coating process is applicable in different engineering sectors such as aviation industry, marine industry, biomedical industry etc., In this Experimental study the Process parameter optimization of D-spray coating process with different coating powder was done by Taguchi design of experiment [2] and interrelationships among multiple response was analysed with Grey relation Analysis [2] in order to find the optimized processing conditions and to get higher quality of coating. Micro hardness Wear resistant, Surface roughness are the multiple responses estimated for various combinations of parameters and the optimum process parameters were obtained.

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Influence of Process Parameters on the Tribological Behavior of PEO Coatings on CP-Titanium 4+ Alloys for Biomedical Applications

Materials ◽

10.3390/ma14185364 ◽

2021 ◽

Vol 14 (18) ◽

pp. 5364

Author(s):

Stephan Lederer ◽

Serkan Arat ◽

Wolfram Fuerbeth

Keyword(s):

Wear Resistance ◽

Process Parameters ◽

Current Density ◽

Repetition Rate ◽

Base Alloy ◽

Pure Titanium ◽

Ceramic Coatings ◽

Influence Of Process Parameters ◽

Wear Resistant ◽

Peo Coatings

Wear resistant ceramic coatings were generated on novel commercially pure titanium grade 4+ alloys by the plasma electrolytic oxidation technique (PEO) in an aluminate and zirconia containing electrolyte. The coatings were obtained adopting a full regular two-level factorial design of experiments (DoE) varying the PEO process parameters current density, repetition rate and duty cycle. The generated coatings were characterized with respect to its wear resistance and mechanical properties by reciprocal ball-on-flat tests and nanoindentation measurements. Thickness, morphology and phase formation of the PEO coatings was analyzed by scanning electron microscopy (SEM/EDS) and X-ray diffraction. XRD results indicate the formation of crystalline aluminium titanate (TiAl2O5) as well as t-ZrO2 and alumina leading to an increase in hardness and wear resistance of the PEO coatings. Evaluation of the DoE’s parameter interaction shows that the main effects for generating wear resistant coatings are current density and repetition rate. In particular, the formation of mechanically stable and adhesive corundum and zirconia containing coatings with increasing current density and frequency turned out to be responsible for the improvement of the tribological properties. Overall, the PEO processing significantly improves the wear resistance of the CP titanium base alloy.

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Nitrocarburising of Low Alloyed Case Hardening Steels Applying Three Different Temperatures

Materials Science Forum ◽

10.4028/www.scientific.net/msf.729.13 ◽

2012 ◽

Vol 729 ◽

pp. 13-18

Author(s):

Andrea Szilágyi Biró ◽

Miklós Tisza

Keyword(s):

Process Parameters ◽

Diffusion Zone ◽

Case Hardening ◽

Eutectoid Temperature ◽

Wear Resistant ◽

The Core ◽

Different Temperatures ◽

Resistant Layer

Nitriding is one of the most important processes among surface technologies. The purpose of this process is to produce a wear resistant layer on the surface of components, to meet the complex requirements. Ferritic nitrocarburising was carried out at three different temperatures (520, 570 and 620°C) and with five different process times, to study the effects on process parameters . The experiments proved that in case of ferritic nitrocarburising, it is possible to produce larger diffusion zone during the same time. If the temperature is higher than the iron-nitrogen eutectoid temperature, the diffusion is deeper, but we should consider the softening of the core.

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