Premium
Improving the Cyclic‐Oxidation Resistance of Ti 3 AlC 2 at 550°C and 650°C by Preoxidation at 1100°C
Author(s) -
Qian Xukun,
He Xiaodong,
Li Yibin,
Sun Yue,
Zhu Chuncheng
Publication year - 2010
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2009.02476.x
Subject(s) - materials science , amorphous solid , cyclic stress , diffraction , thermal oxidation , chemical engineering , composite material , crystallography , chemistry , engineering , physics , layer (electronics) , optics
Preoxidation of Ti 3 AlC 2 at 1100°C for 2 h was conducted to improve its cyclic‐oxidation resistance at the testing temperature of 550°C and 650°C in air. The cyclic oxidation of the preoxidized Ti 3 AlC 2 was found to follow a parabolic rate law rather than the linear oxidation rate for that without preoxidation. Through the X‐ray diffraction and SEM analysis, the remarkable improvement of the cyclic‐oxidation resistance of preoxidation Ti 3 AlC 2 is suggested due to the existence of protective α‐Al 2 O 3 layers formed during the preoxidation treatment, which inhibits the formation of amorphous Al 2 O 3 , which can result in larger thermal stress and stress‐induced microcracks.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom