scholarly journals Oxidation resistance of cathodic arc evaporated Cr0.74Ta0.26N coatings

2022 ◽  
pp. 114492
Author(s):  
Christina Kainz ◽  
Christian Saringer ◽  
Michael Burtscher ◽  
Michael Tkadletz ◽  
Andreas Stark ◽  
...  
Keyword(s):  
Oxidation Resistance ◽  
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.

Thermal Behavior of AlTiN Free-Standing Coating by Cathodic Arc Deposition

2014 ◽  
Vol 900 ◽  
pp. 538-542
Author(s):  
Po Yi Tsou ◽  
Wei Yu Ho ◽  
Yen Shuo Chang ◽  
Guo Kai Jiang ◽  
Chien Ju Chiu ◽  
...  
Keyword(s):  
Oxidation Resistance ◽  
Annealing Temperature ◽  
Bulk Material ◽  
Recrystallization Process ◽  
Free Standing ◽  
Cathodic Arc Deposition ◽  
Cathodic Arc ◽  
New Phase ◽  
Arc Deposition ◽  
Thermal And Chemical Stability

(Ti,Al)N coatings possess superior hardness, good thermal and chemical stability. To further study the oxidation resistance, the arc-deposited AlTiN bulk material was collected from the substrate shutter of a commercial coating system deposited for over 100 batches. The thermal behaviour of the materials was studied by TGA/DSC with different annealing temperature or different atmospheres. The results show that AlTiN bulk material annealed in nitrogen exhibits the denser structure and thermal stability up to 1000°C. The oxidation resistance of the AlTiN can reach to 800°C. Annealed at 600 ~ 700°C proceed the recrystallization process which denser the structure. New phase of TiO2is formed by incorporate oxygen in exchange of nitrogen. nanoscaled 1D wire formation occurred at the 1000°C for 3 hours in air.

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

scholarly journals Microstructure, Properties, and Titanium Cutting Performance of AlTiN–Cu and AlTiN–Ni Coatings

Coatings ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 818 ◽  
Author(s):  
Jiyong Yi ◽  
Kanghua Chen ◽  
Yinchao Xu
Keyword(s):  
Oxidation Resistance ◽  
Elastic Moduli ◽  
Cutting Speed ◽  
Columnar Structure ◽  
Growth Defects ◽  
High Cutting Speed ◽  
Cathodic Arc Evaporation ◽  
Arc Evaporation ◽  
Cathodic Arc ◽  
Cutting Behavior

In this study, three kinds of coatings, AlTiN, AlTiN–Ni, and AlTiN–Cu were deposited via the cathodic arc evaporation method. The microstructure, mechanical properties, oxidation resistance, and cutting behavior of these coatings were then investigated. The incorporation of Cu(Ni) into AlTiN eliminated its columnar structure and led to an increase in the growth defects of its macroparticles. The addition of Cu and Ni decreased the hardness of the coatings, their elastic moduli, and their friction coefficients. All of the AlTiN, AlTiN–Ni, and AlTiN–Cu coatings presented sufficient adhesion strength values. The oxidation resistance of these three coatings was determined to be in the following order: AlTiN > AlTiN–Ni > AlTiN–Cu. Titanium turning experiments indicated that the cutting force was reduced and the tool life was improved through doping with Cu(Ni) elements, dependent on cutting speed. The AlTiN–Ni coating showed the best performance at a high cutting speed, whereas the AlTiN–Cu coating was more successful at a lower cutting speed.

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.

Morphologies of Nonadherent Al2O3 and Matching Substrate Surfaces

1972 ◽  
Vol 30 ◽  
pp. 524-525
Author(s):  
C. S. Giggins ◽  
J. K. Tien ◽  
B. H. Kear ◽  
F. S. Pettit
Keyword(s):  
Electron Microscopy ◽  
Oxide Scale ◽  
Oxidation Resistance ◽  
Substrate Surface ◽  
Morphological Features ◽  
Thermally Induced ◽  
Oxide Spallation ◽  
Oxidation Resistant ◽  
Induced Stresses ◽  
Substrate Surfaces

The performance of most oxidation resistant alloys and coatings is markedly improved if the oxide scale strongly adheres to the substrate surface. Consequently, in order to develop alloys and coatings with improved oxidation resistance, it has become necessary to determine the conditions that lead to spallation of oxides from the surfaces of alloys. In what follows, the morphological features of nonadherent Al2O3, and the substrate surfaces from which the Al2O3 has spalled, are presented and related to oxide spallation.The Al2O3, scales were developed by oxidizing Fe-25Cr-4Al (w/o) and Ni-rich Ni3 (Al,Ta) alloys in air at 1200°C. These scales spalled from their substrates upon cooling as a result of thermally induced stresses. The scales and the alloy substrate surfaces were then examined by scanning and replication electron microscopy.The Al2O3, scales from the Fe-Cr-Al contained filamentary protrusions at the oxide-gas interface, Fig. 1(a). In addition, nodules of oxide have been developed such that cavities were formed between the oxide and the substrate, Fig. 1(a).

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