Cyclic oxidation resistance of Ni–Al alloy coatings deposited on steel by a cathodic arc plasma process

2001 ◽  
Vol 135 (2-3) ◽  
pp. 158-165 ◽  
Author(s):  
J.L He ◽  
K.C Chen ◽  
C.C Chen ◽  
A Leyland ◽  
A Matthews
Keyword(s):  
Oxidation Resistance ◽  
Cyclic Oxidation ◽  
Al Alloy ◽  
Arc Plasma ◽  
Plasma Process ◽  
Cathodic Arc

Oxidation of TiAlCrSiN Thin Films at 1000°C in Air

2015 ◽  
Vol 719-720 ◽  
pp. 127-131
Author(s):  
Min Jung Kim ◽  
Dong Bok Lee
Keyword(s):  
Thin Films ◽  
Oxide Scale ◽  
Oxidation Resistance ◽  
Plasma Deposition ◽  
Arc Plasma ◽  
Cathodic Arc

TiAlCrSiN thin films consisting of alternating TiCrN and AlSiN nanolayers were deposited by cathodic arc plasma deposition, and oxidized at 1000°C in air. When oxidized for 10 h, about 1 μm-thick oxide sale formed, and its surface was covered with numerous tiny oxide crystallites. When oxidized for 30 h, about 2.5 μm-thick oxide scale formed, and began to spall from the surface. When oxidized for 80 h, the oxide sale was about 12.2 μm-thick. The film had a reasonable oxidation resistance due mainly to Al, Cr, and Si, which formed protective oxides.

High Temperature Oxidation of CrAlSiN Thin Films

2013 ◽  
Vol 699 ◽  
pp. 612-615 ◽  
Author(s):  
Sung Bin Won ◽  
Min Jung Kim ◽  
Chun Yu Xu ◽  
Yeon Sang Hwang ◽  
Dong Bok Lee
Keyword(s):  
Thin Films ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
Plasma Deposition ◽  
Arc Plasma ◽  
Temperature Oxidation ◽  
Good Oxidation Resistance ◽  
Α Al2o3 ◽  
Cathodic Arc ◽  
Poor Oxidation Resistance

Nano-multilayered, crystalline CrAlSiN thin films were deposited on either steel or WC-10%Co substrates by the cathodic arc plasma deposition. Their oxidation characteristics were studied at 800-1000°C for 50 h in air. The film deposited on steel displayed good oxidation resistance, due mainly to formation of Cr2O3 and α-Al2O3. The film deposited on WC-10%Co displayed poor oxidation resistance, due mainly to the oxidation of the substrate.

STUDY ON CYCLIC OXIDATION RESISTANCE OF HIGH NIOBIUM CONTAINING TiAl BASE ALLOY WITH ERBIUM

2013 ◽  
Vol 49 (11) ◽  
pp. 1369 ◽  
Author(s):  
Ziqi GONG ◽  
Ziyong CHEN ◽  
Lihua CHAI ◽  
Zhilei XIANG ◽  
Zuoren NIE
Keyword(s):  
Oxidation Resistance ◽  
Cyclic Oxidation ◽  
Base Alloy

Effects of Cr+ ion implantation on the oxidation of Ni3Al

1993 ◽  
Vol 8 (4) ◽  
pp. 734-740 ◽  
Author(s):  
M. Chen ◽  
S. Patu ◽  
J.N. Shen ◽  
C.X. Shi
Keyword(s):  
Oxidation Resistance ◽  
Layer Structure ◽  
Surface Region ◽  
Optical Microscope ◽  
Al Alloy ◽  
Temperature Oxidation ◽  
Intermediate Layers ◽  
Air Interface ◽  
Before And After ◽  
High Temperature Oxidation Behavior

Ni3Al samples were implanted with different doses of 150 keV Cr+ ions to modify the surface region. The high temperature oxidation behavior was tested. The surface layer structure was investigated by AES, TEM, XRD, and optical microscope before and after the test. The experimental results show that chromium ions turn a small amount of ordered superlattice Ni3Al phase into a disordered Ni–Al–Cr phase. Also there is a bcc chromium phase in the implanted sample. Implanted Ni3Al alloy has better oxidation resistance than the unimplanted one at 900 °C. The oxide layer is of a multilayer structure after 50 h oxidation, composed of a NiO inner layer, Cr2O3, spinel NiAl2O4 intermediate layers, and an α–Al2O3 external layer at the oxide/air interface. The α-Al2O3 and Cr2O3 are independent scale-like layers. The two protective layers improve the oxidation resistance significantly. The effects of implanted elements and possible reaction mechanisms are discussed.

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