TY - GEN
T1 - Oxidation behavior of Mo-Si-B In-situ composites
AU - Yamauchi, Akira
AU - Yoshimi, Kyosuke
AU - Murakami, Yoshihiro
AU - Kurokawa, Kazuya
AU - Hanada, Shuji
N1 - Publisher Copyright:
© (2007) Trans Tech Publications, Switzerland.
PY - 2007
Y1 - 2007
N2 - Isothermal oxidation behavior of Al added Mo-Si-B in-situ composites was investigated under Ar-20%O2 and air atmosphere over the temperature range of 1073–1673 K. The Al added Mo-Si-B composites ((Mo-8.7mol%Si-17.4mol%B)-1mol%Al) were prepared by arc-melting, and homogenized at 2073 K for 24 h in an Ar-flow atmosphere. The ternary Mo-Si-B in-situ composite exhibited a rapid mass loss at the initial oxidation stage and then the passive oxidation after the substrates were sealed with borosilicate glass in the temperature range of 1173–1473 K, whereas it exhibited a rapid mass gain around 1073 K. On the other hand, the Al addition significantly improved the oxidation resistance of Mo-Si-B in-situ composites at temperatures from 1073–1573 K. These excellent oxidation resistances are considered to be due to the rapid formation of a continuous, dense scale of Al-Si-O complex oxides.
AB - Isothermal oxidation behavior of Al added Mo-Si-B in-situ composites was investigated under Ar-20%O2 and air atmosphere over the temperature range of 1073–1673 K. The Al added Mo-Si-B composites ((Mo-8.7mol%Si-17.4mol%B)-1mol%Al) were prepared by arc-melting, and homogenized at 2073 K for 24 h in an Ar-flow atmosphere. The ternary Mo-Si-B in-situ composite exhibited a rapid mass loss at the initial oxidation stage and then the passive oxidation after the substrates were sealed with borosilicate glass in the temperature range of 1173–1473 K, whereas it exhibited a rapid mass gain around 1073 K. On the other hand, the Al addition significantly improved the oxidation resistance of Mo-Si-B in-situ composites at temperatures from 1073–1573 K. These excellent oxidation resistances are considered to be due to the rapid formation of a continuous, dense scale of Al-Si-O complex oxides.
KW - Borosilicate
KW - High temperature oxidation
KW - In-situ composite
KW - Molybdenum silicides
UR - http://www.scopus.com/inward/record.url?scp=78349306470&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78349306470&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/SSP.127.215
DO - 10.4028/www.scientific.net/SSP.127.215
M3 - Conference contribution
AN - SCOPUS:78349306470
SN - 9783908451334
T3 - Solid State Phenomena
SP - 215
EP - 220
BT - Designing of Interfacial Structures in Advanced Materials and their Joints
A2 - Naka, Masaaki
PB - Trans Tech Publications Ltd
T2 - International Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS 2006
Y2 - 18 May 2006 through 20 May 2006
ER -