Influence of Interlayer on the Corrosion Behavior of Multilayered WC-Ti1-xAlxN Coatings in Deaerated 3.5% Sodium Chloride Solution

2007 ◽  
Vol 544-545 ◽  
pp. 359-362
Author(s):  
J.H. Hong ◽  
Seung Ho Ahn ◽  
Jung Gu Kim
Keyword(s):  
High Speed ◽  
Galvanic Corrosion ◽  
Multilayer Coating ◽  
High Speed Steel ◽  
Al Content ◽  
Cathodic Arc Deposition ◽  
Wear And Corrosion ◽  
Lower Porosity ◽  
Corrosion Behaviors ◽  
Cathodic Arc

Multilayered coatings of WC-Ti and WC-Ti1-xAlxN were deposited to form a wear- and corrosion-resistant surface. The cathodic arc deposition (CAD) method was used to deposit WC-Ti1- xAlxN coatings with variable Al content onto high speed steel (HSS). Three kinds of WC-Ti1-xAlxN coatings, each with and without interlayer (Ti/TiN), were prepared. The corrosion behaviors of WCTi1- xAlxN coatings in a deaerated 3.5% NaCl solution were investigated by galvanic corrosion test and potentiodynamic polarization test. The porosity of the coatings, both with and without interlayer, generally decreased with increasing Al content. The multilayer coating with a Ti/TiN interlayer was responsible for the increased corrosion resistance due to its lower porosity and higher adhesion strength than the multilayer coatings without interlayer.

Effect of TiN/CrN Multilayer Coating by Cathodic Arc Deposition on Wear and Corrosion Behaviours of AZ91D Magnesium Alloy

2009 ◽  
Vol 610-613 ◽  
pp. 870-873 ◽  
Author(s):  
Lin Hai Tian ◽  
Er Qiang Liu ◽  
Ai Lan Fan ◽  
Lin Qin ◽  
Dao Xin Liu ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Multilayer Coating ◽  
Hardness Measurement ◽  
Az91d Magnesium Alloy ◽  
Cathodic Arc Deposition ◽  
Wear And Corrosion ◽  
Process Effects ◽  
Cathodic Arc ◽  
Arc Deposition ◽  
Wear Tests

TiN/CrN multilayer coating was deposited on AZ91D magnesium alloy by pulsed bias cathodic arc PVD process. Effects of the coating on wear and corrosion behaviours of magnesium alloy were investigated. The stick-tearing for adhesion evaluation, nanoindentation for hardness measurement, ball-on-disc testing for wear tests, and potentiodynamic polarization for corrosion tests were used. The results show that the friction coefficient is decreased and the wear resistance is improved remarkably by TiN/CrN multilayer coating on AZ91D magnesium alloy. The corrosion resistance of the alloy is increased at a certain degree.

Wear and corrosion properties of TiN layers deposited on nitrided high speed steel

1995 ◽  
Vol 72 (3) ◽  
pp. 189-195 ◽  
Author(s):  
J. Michalski ◽  
Ellina Lunarska ◽  
T. Wierzchon ◽  
S. AlGhanem
Keyword(s):  
High Speed ◽  
High Speed Steel ◽  
Corrosion Properties ◽  
Wear And Corrosion

Corrosion behaviors of Cr(N,O)/CrN double-layered coatings by cathodic arc deposition

2005 ◽  
Vol 200 (5-6) ◽  
pp. 1303-1309 ◽  
Author(s):  
Wei-Yu Ho ◽  
Cheng-Hsun Hsu ◽  
Dung-Hau Huang ◽  
Yen-Chun Lin ◽  
Chi-Lung Chang ◽  
...  
Keyword(s):  
Layered Coatings ◽  
Cathodic Arc Deposition ◽  
Corrosion Behaviors ◽  
Cathodic Arc ◽  
Arc Deposition

Microstructure and Corrosion Resistance of TiN Coating on HSS by Pulsed Bias Cathodic Arc Ion Plating

2011 ◽  
Vol 675-677 ◽  
pp. 1307-1310 ◽  
Author(s):  
Xiao Hong Yao ◽  
Bin Tang ◽  
Lin Hai Tian ◽  
Xiao Fang Li ◽  
Yong Ma
Keyword(s):  
Corrosion Resistance ◽  
High Speed ◽  
High Speed Steel ◽  
Corrosion Current ◽  
Scratch Test ◽  
Grain Structure ◽  
Tin Coating ◽  
Arc Ion Plating ◽  
Ion Plating ◽  
Cathodic Arc

TiN coating with thickness of 2.5μm was deposited on high-speed steel (HSS) substrate by pulsed bias cathodic arc ion plating. The surface and cross-section morphologies, composition depth profile and phase structure were characterized by FESEM, GDOES and XRD, respectively. Scratch test for adhesion evaluation, microhardness test for hardness measurement, and potentiodynamic polarization for corrosion resistance test were used. The results show that the TiN coating exhibits smooth surface, dense columnar grain structure and an obviously preferred orientation of TiN(111). The adhesion of the coating to substrate is exceeded more than 100N. The hardness of the coating is about 26 GPa. The low corrosion current density (Icorr) and rather high corrosion potential (Ecorr) value imply that the TiN coating displays a good corrosion resistance in 0.5mol/l NaCl solution. However, pitting is still existed due to the defects in the coating.

scholarly journals Characterization and Tribological Behavior of TiAlN/TiAlCN Multilayer Coatings

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
Zhefeng Lei ◽  
Xiaodong Zhu ◽  
Yanhuai Li ◽  
Zhongxiao Song ◽  
Haiping Liu ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Flow Rate ◽  
Bonding Strength ◽  
High Speed ◽  
Tribological Behavior ◽  
Multilayer Coating ◽  
High Speed Steel ◽  
Multilayer Coatings ◽  
Low Wear ◽  
N2 Flow Rate

Effects of partial pressure of methane on deposition rate, hardness, bonding strength and friction coefficient of TiAlN/TiAlC0.37N0.63 multilayer coating were investigated. The TiAlN coating was deposited at a N2 flow rate of 70 sccm, and TiAlC0.37N0.63 coating were deposited at a N2 flow rate of 35 sccm and a CH4 flow rate of 35 sccm. TiAlN/TiAlC0.37N0.63 multilayer coatings with different modulation periods but the same total thickness of 3.56 μm were deposited on high speed steel (HSS) substrates using multi-arc ion plating technology. Microhardness and tribological measurement show that the multilayer coating with a modulating ratio of 1:1 and a modulation period of 68 nm had a hardness of 2793.9 HV0.10, an excellent bonding strength of 52 N, and the minimum friction coefficient of 0.46 and a relatively low wear rate.

MACRODROPLET REDUCTION AND GROWTH MECHANISMS IN CATHODIC ARC PHYSICAL VAPOR DEPOSITION OF TiN FILMS

2008 ◽  
Vol 15 (05) ◽  
pp. 653-659 ◽  
Author(s):  
MUBARAK ALI ◽  
ESAH HAMZAH ◽  
TAHIR ABBAS ◽  
MOHD RADZI HJ. MOHD TOFF ◽  
ISHTIAQ A. QAZI
Keyword(s):  
Vapor Deposition ◽  
Metal Ion ◽  
Physical Vapor Deposition ◽  
High Speed ◽  
Gas Flow ◽  
High Speed Steel ◽  
Hard Coatings ◽  
Growth Mechanisms ◽  
Tin Coatings ◽  
Cathodic Arc

Cathodic arc physical vapor deposition (CAPVD) a technique used for the deposition of hard coatings for tooling applications has many advantages. The main drawback of this technique is the formation of macrodroplets (MDs) during deposition resulting in films with rougher morphology. The MDs contamination and growth mechanisms was investigated in TiN coatings over high-speed steel, as a function of metal ion etching, substrate bias, and nitrogen gas flow rate; it was observed that the latter is the most important factor in controlling the size and number of the macrodroplets.

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