Paper Title:
Microstructure and Phase Composition of Iridium Coating on Molybdenum after Heat Treatment at 1400°C
  Abstract

Iridium (Ir) could be taken as high temperature protective coating for the refractory metals. Ir coating was deposited on the surface of molybdenum (Mo) substrate by double glow plasma. Thermal stability of the coating was investigated at 1400°C for 90 min, while Ar gas was inputted to hold the vacuum pressure. The microstructure of the surface and interface of the Ir coating were observed by SEM and TEM. The phase transition of the coating was determined by X-ray diffraction. Many micropores and microbubbles appeared in the surface of the as-heat treated coating. The interfacial reaction between the Mo substrate and Ir coating occurred during heat treatment, and Ir21.5Mo8.5 phase was formed at 1400°C. The experimental results indicated that the integrity of the Ir coating was not degraded after heat treatment.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
688-691
DOI
10.4028/www.scientific.net/AMR.189-193.688
Citation
W. P. Wu, Z. F. Chen, X. Lin, "Microstructure and Phase Composition of Iridium Coating on Molybdenum after Heat Treatment at 1400°C", Advanced Materials Research, Vols. 189-193, pp. 688-691, 2011
Online since
February 2011
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: Mu Qin Li, Da Shan Shang, Chen Ma, Shi Qin Yang
Abstract:Bioactive composite coatings containing sub-layer and working-layer with different ingredients were prepared using subsonic thermal spraying...
1619
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: Yu Xin Gao, Cheng Zhao, Zhi Gang Fang, Jian Yi
Abstract:Micro-nanostructure coatings have been attempted to prepare by Electro-spark deposition (ESD) on cast iron substrate. The microstructures and...
176
Authors: Jian Hua Liu, Yi Hua Feng, Lei Shi, Qing Yu Zhang
Abstract:Arc ion plating technique PVD ZrN coatings were deposited on YT15 cemented carbide. Microstructural and fundamental properties of the ZrN...
1089
Authors: Shun Qi Zheng, Xiao Jing Li, Li Ping Zhu, Yun Chen, Jian Min Luo
Chapter 1: Alloy and Nanometer Materials
Abstract:Micro-arc oxidation (MAO) coatings were synthesized on MB3 magnesium alloy substrate. Two different electrolyte (Ⅰ) and electrolyte (Ⅱ) were...
54