Deposition of Multi-Functional Coatings by Physical Vapour Deposition

2007 ◽  
Vol 539-543 ◽  
pp. 1194-1199 ◽  
Author(s):  
Wolfgang Tillmann ◽  
Evelina Vogli ◽  
Jan Nebel
Keyword(s):  
Wear Resistance ◽  
Corrosion Protection ◽  
Friction And Wear ◽  
Vapour Deposition ◽  
Mechanical Tests ◽  
Multilayer Coatings ◽  
Physical Vapour Deposition ◽  
Functional Coatings ◽  
Cutting Inserts

Multifunctional coatings open new dimensions due to a combination of properties like high friction and wear resistance, electrical attributes, heat or corrosion protection in one system. In this study multifunctional coatings for in-situ temperature measurements on cutting inserts as well as multilayer coatings have been investigated. Corresponding metallurgical analyses together with mechanical tests are presented.

A Low Temperature CVD Process for TiN Coatings

1989 ◽  
Vol 168 ◽  
Author(s):  
A. Aguero ◽  
D. Little ◽  
P. Lowden
Keyword(s):  
Wear Resistance ◽  
Low Temperature ◽  
Titanium Nitride ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Reduced Pressure ◽  
Tin Coatings ◽  
Excellent Adhesion ◽  
Low Temperature Process

AbstractA novel low temperature process for the chemical vapour deposition of titanium nitride films has been developed. Titanium sub-halides generated “in situ” by chlorination of titanium pellets are subsequently reacted with ammonia at reduced pressure and temperatures of 450–600° C. The coatings have excellent adhesion and wear resistance. A description of the process and the properties of the coatings produced by it will be presented.

Pin-on-disc tribotest of Cr/CrN/CrCN/ZrN multilayer coatings by physical vapour deposition (PVD)

2019 ◽  
Vol 16 ◽  
pp. 2067-2071
Author(s):  
Mohd. Zakuan Bin Abdullah ◽  
Ahmad Nizam Bin Abdullah ◽  
Mohamad Hazri bin Othman ◽  
Mohamad Azmirrudin Bin Ahmad ◽  
Patthi Hussain
Keyword(s):  
Vapour Deposition ◽  
Multilayer Coatings ◽  
Physical Vapour Deposition ◽  
Pin On Disc

Influence of Laser Hardening to the Sliding Wear Resistance of the PVD (Al,Ti)N-G and nACo® Coatings

2014 ◽  
Vol 604 ◽  
pp. 28-31 ◽  
Author(s):  
Andrei Surzhenkov ◽  
Eron Adoberg ◽  
Maksim Antonov ◽  
Fjodor Sergejev ◽  
Valdek Mikli ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Sliding Wear ◽  
Vapour Deposition ◽  
Hardened Layer ◽  
Laser Hardening ◽  
Beam Power ◽  
Physical Vapour Deposition ◽  
Hardening Process ◽  
Laser Beam Power ◽  
Scan Speed

In the present article, the laser hardening of the carbon steel C45, previously coated by the physical vapour deposition (PVD) process, is studied. The (Al,Ti)N-G and nACo® (nc-AlxTi1-xN/α-Si3N4) coatings were applied. Nd:YAG laser with the laser beam power density of 1945 W/cm2 and scan speed of 300 mm/min was used for hardening process. Laser hardening lead to the formation of hardened layer under both coatings, consisting of austenite and ferrite. The approximate depth of the hardened layer and maximal microhardness was approximately 0.2 mm and 955 HV0.05 and 0.1 mm and 520 HV0.05 in the case of the (Al,Ti)N-G and the nACo® coating, respectively. After laser hardening the sliding wear of the (Al,Ti)N-G coating decreased by 1.25 times and of the nACo® coating by 1.05 times.

Effect of Varying Load on DLC/AlCrN-Based Coated AISI D2 Die Steel at Constant Sliding Velocity

2017 ◽  
Author(s):  
Sukhinderpal Singh ◽  
Jasmaninder Singh Grewal
Keyword(s):  
Wear Resistance ◽  
Magnetron Sputtering ◽  
Sliding Wear ◽  
Vapour Deposition ◽  
Wear Behaviour ◽  
Physical Vapour Deposition ◽  
Deposition Technique ◽  
Dc Magnetron Sputtering ◽  
Die Steel ◽  
Aisi D2

This study has been made to limit the sliding wear by employing advanced protective nano coatings by using DC magnetron sputtering Physical Vapour Deposition technique. Three advanced nano coatings viz. Diamond-Like Carbon (DLC), composite AlCrN coating and AlCrN/TiAlN multilayered coatings were selected for present work due to their enviable wear resistant characteristics. Coatings were deposited on AISI-D2 die steel by traditional DC magnetron sputtering physical vapour deposition technique. The as deposited coatings were characterized with surface roughness, microhardness, porosity and microstructure. The X-Ray Diffraction (XRD) and field mission scanning electron microscope (FESEM with EDAX) techniques have been used to describe various phases established after coating deposited on the surface of the substrate. Subsequently, sliding wear and friction tests were conducted in accordance with ASTM standard G99-03, under scrutiny variation of load and time and at constant sliding speed. Cumulative wear volume loss and coefficient of friction were formulated for coated as well as uncoated/tempered specimen at a constant speed of 1 m/s and varying load of 25N and 50N. The results from experimentation were analysed with SEM micrographs and Energy dispersive spectrum to analyse the adaptability of coating for base materials, wear behaviour and friction behaviour of coated and uncoated/tempered substrates. The results have shown adaptability of advance nano-coatings for AISI D2 die steel. The generation of oxide layer during wear process provides wear resistance to the AlCrN-based coatings. No thermal instability has been observed in nano-coatings at low temperature generated while experimentation and that is under working range of cold forming processes. It is observed that there is relevant decrease in frictional force by the application of DLC coatings while AlCrN/TiAlN has provided much better wear resistance.

LaF3 Influences on Wear Resistance of TiC/Ni Cladding Layer by Laser Cladding In Situ Fabricated

2012 ◽  
Vol 549 ◽  
pp. 335-339 ◽  
Author(s):  
Cheng Qiang Wang ◽  
Li Juan Wang ◽  
Jiang Qiao Wu ◽  
Zi Zhen Chen ◽  
Yong Jun Niu
Keyword(s):  
Wear Resistance ◽  
Rare Earth ◽  
Laser Cladding ◽  
Friction And Wear ◽  
In Situ Synthesis ◽  
Particle Segregation ◽  
Cladding Layer ◽  
Tic Particle ◽  
Heterogeneous Phase

The TiC/Ni composite coating was prepared by Laser Cladding In-situ Synthesis on the surface of damper plate with Ni--Ti-Mo-C -LaF3 powder．Microstructure and Wear resistance have been studied throughout EPMA、SEM and M—2000 Friction and Wear Tester．It was found that the microstructure got more homogenized grain fineness became finer, TiC distributed better and heterogeneous phase decreased, as adding moderate rare earth LaF3. When the content of LaF3 was 1%, the highest microhardness was got. While the optimal wear resistance properties were obtained with 2% LaF3. The laser cladding with excessive LaF3 has more TiC particle segregation which induces hardness and wear resistance of cladding layer.

TEM Investigations of (Ti, Si)N Layer Coated on Magnesium Alloy Using PVD Technique

2013 ◽  
Vol 203-204 ◽  
pp. 198-203 ◽  
Author(s):  
Tomasz Tański ◽  
Krzysztof Labisz ◽  
Janusz Szewczenko
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Wear Resistance ◽  
Surface Engineering ◽  
Vapour Deposition ◽  
Research Work ◽  
Deposition Process ◽  
General Purpose ◽  
General View ◽  
Physical Vapour Deposition

Thin films and coatings are applied to engineering materials in order to improve the mechanical properties of the surface, such as wear resistance, corrosion resistance and hardness. This research work deals with coatings deposited by appliance of the Physical Vapour Deposition method (PVD). The presented instigations concerning the production of coatings are one of the present important directions connected with modern surface engineering, ensuring the obtainment of coatings of high usable properties like mechanical characteristics and wear resistance. The general purpose of this work is investigation and evaluation of the obtained Ti/(Ti,Si)N/(Ti,Si)N coatings on magnesium cast alloys using electron microscope as the main investigation tool. The investigations were performed using scanning and transmission electron microscopy for the microstructure determination, also EDS microanalysis and electron diffraction was possible to obtain. While investigating the coating material, there were studied the transition zone between the coating and the substrate material as well the occurrence of some structure defects which can be present after the deposition process and could have any influence of the properties of the achieved coating. Also the structure character will be investigated for the occurrence of the nanostructure coatings, which could be seen as the solution of this issue. In the present work, the goal is set on current practices and future trends for nanocomposite thin films and coatings deposited by physical vapour deposition (PVD) technique. This investigation will touch some aspects of such coatings, but the main objective is to give a general view on features revealed using electron microscopy application in PVD coating investigations.

Tribological properties of hydrogenated boron carbide (BxC:Hy) thin films on stainless steel deposited by RF-PECVD technique

2020 ◽  
Vol 91 (2) ◽  
pp. 21301
Author(s):  
Arundhati Bute ◽  
Neelima Khare ◽  
Sanjiv Kumar ◽  
Debarati Bhattacharya ◽  
Kulwant Singh ◽  
...  
Keyword(s):  
Thin Films ◽  
Wear Resistance ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
High Hardness ◽  
Self Bias ◽  
Deposition Parameters ◽  
Frequency Plasma

This study narrates the findings regarding investigation of tribological properties of BxC:Hy thin films deposited by Radio Frequency Plasma Enhanced Chemical Vapour Deposition (RF-PECVD) technique. To study tribological properties, two sets of films were prepared with variation in composition and thickness by tuning deposition parameters. Tribological properties were studied in ambience for three different applied vertical load values (5, 10 and 15 N). Lower self-bias (−75 V) seems advantageous for synthesis of BxC:Hy films offering superior hardness, lubricity and wear resistance in tribologically stressed conditions. For a given composition, the film with the highest thickness (∼3 μm) exhibited better friction and wear resistance, offering lowest co-efficient of friction (COF) ∼0.23 for 5 N load and specific wear rate of 2.56 × 10−5 mm3/Nm for 10 N load. Lower self-bias during deposition (−75 V) seems advantageous for synthesis of BxC:Hy films having high hardness (∼2800 HK) and excellent Co-efficient of friction (COF).

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