Cao Tieshan   

Associate Professor
Supervisor of Master's Candidates

MORE> Recommended MA Supervisor Institutional Repository Personal Page
Language:English

Paper Publications

Title of Paper:Oxidation behavior of a single-crystal Ni-based superalloy over the temperature range of 850 degrees C-950 degrees C in air

Hits:

Date of Publication:2019-08-01

Journal:APPLIED SURFACE SCIENCE

Included Journals:SCIE、EI

Volume:484

Page Number:209-218

ISSN No.:0169-4332

Key Words:Ni-based; Kinetics; Stage; Oxide film; Alumina

Abstract:The oxidation behavior of a single-crystal Ni-based superalloy over the temperature range of 850 degrees C-950 degrees C and under R-a= 0.1-0.2 mu m was investigated. The oxidation kinetics of the superalloy presented two stages. The first and second stages had activation energies of 222 and 263 KJ.mol(-1), respectively. The oxide film comprised NiO, NiCr2O4, CrTaO4, and Al2O3. The formation time of the continuous Al2O3 layer corresponded to the transition point of oxidation kinetics at each temperature. Mass gain in the first stage could be attributed to the formation of an outer NiO layer and an inner alumina layer, whereas that in the second stage could be ascribed to the growth of intermediate spinel layers.

Address: No.2 Linggong Road, Ganjingzi District, Dalian City, Liaoning Province, P.R.C., 116024
Click:    MOBILE Version DALIAN UNIVERSITY OF TECHNOLOGY Login

Open time:..

The Last Update Time: ..