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High Temperature Oxidation of Ni–Fe–Cr–Al Porous Metal
Author(s) -
Choi SungHwan,
Oh JaeSung,
Yun JungYeul,
Kong YoungMin,
Kim ByoungKee,
Lee KeeAhn
Publication year - 2013
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201200140
Subject(s) - materials science , porosity , metal , nial , isothermal process , nichrome , chemical engineering , metallurgy , porous medium , composite material , alloy , intermetallic , thermodynamics , physics , engineering
This study investigated the high temperature oxidation of Ni–Fe–Cr–Al porous metal. Two types of open porous metals with pore sizes of 30 and 40 PPI were used. For 24‐h, the isothermal oxidation TGA tests were conducted at three different temperatures of 900, 1000, and 1100 °C. The oxidation resistance of porous metal decreased with decreasing pore size. Porous metals mainly created oxides such as Al 2 O 3 , Cr 2 O 3 , NiAl 2 O 4 , and NiCr 2 O 4 . The porous metal represented increasingly faster dwindling of Al and Cr content and easy progress to internal oxidation, comparing to the oxidation of bulk metal.