Paper Title:
Reliability during Thermal Shock Testing of NiCr Films on Mn-Ni-Co Oxide Substrates
  Abstract

There is an increasing reliability concern of thermal stress-induced failures in multilevel coatings in recent years. This work reports investigations of cracking of NiCr coatings due to thermal cycling. The temperature cycling in accelerated testing was performed in three temperature range of 150, 175 and 200°C. The NiCr coatings were considered to have failed when the sheet resistance changed by 30% relative to an initial value. As the cyclic repetition of thermal shock increased, the sheet resistance of NiCr coatings increased. The Coffin-Manson equation was applied to the failure mechanism of cracking of NiCr coatings and the SEM observation of cracks and delamination in NiCr coatings due to thermal cycling agreed well with the failure mechanism.

  Info
Periodical
Key Engineering Materials (Volumes 317-318)
Edited by
T. Ohji, T. Sekino and K. Niihara
Pages
553-556
DOI
10.4028/www.scientific.net/KEM.317-318.553
Citation
M. S. Jeon, J. K. Song, E. J. Lee, H. S. Lee, T. H. No, D. H. Kim, I. G. Park, "Reliability during Thermal Shock Testing of NiCr Films on Mn-Ni-Co Oxide Substrates", Key Engineering Materials, Vols. 317-318, pp. 553-556, 2006
Online since
August 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Damiano Galvan, Y.T. Pei, Jeff T.M. de Hosson, Albano Cavaleiro
Abstract:A commercial RF-sputtering deposition rig was employed to deposit H-free diamond-like carbon (DLC) coatings. The influence of alloying...
1026
Authors: Zhen Bing Cai, Min Hao Zhu, Xiu Zhou Lin, Ji Liang Mo, Zhong Rong Zhou
Abstract:Nickel base Ni60 and cobalt base Co-Cr-W coatings were prepared on substrate of refractory alloy steel 4Cr14NiW2Mo by laser-cladding...
878
Authors: Zhi Jian Yin, Shun Yan Tao, Xia Ming Zhou, Chuan Xian Ding
Abstract:In this work, Al2O3-Al composite coatings with different compositions (Al2O3-5wt.% Al, Al2O3-10wt.% Al and Al2O3-15wt.% Al) were deposited...
361
Authors: Juliane Vicenzi, Antonio S. Takimi, Ricardo B. Fonseca, Andrei Locatelli, Célia Fraga Malfatti, Carlos Pérez Bergmann
Abstract:Plasma sprayed alumina coating is applied in many industrial applications in order to promote wear and corrosion resistance. Nonetheless,...
86
Authors: Satoru Takahashi, Masaki Hatano, Yoshitaka Kojima, Yoshio Harada, Akira Kawasaki, Fumio Ono
Abstract:Thermal cycle resistance of Ni-20Cr, Ni-50Cr and CoNiCrAlY coatings produced by air plasma spraying was investigated according to Japanese...
296