Oxidation behaviour of a MoSiBTiC alloy coated by a (Si plus B) co-deposition pack cementation method

被引：2
作者：
Nan, Xi [1 ]
Ida, Shuntaro [1 ]
Sekido, Nobuaki [1 ]
Yoshimi, Kyosuke [1 ]
Perepezko, John H. [2 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, 6 6 02 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan
[2] Univ Wisconsin Madison, Dept Mat Sci & Engn, 1509 Univ Ave, Madison, WI 53706 USA
来源：
CORROSION SCIENCE | 2023年 / 214卷
基金：
日本学术振兴会;
关键词：
A; Intermetallics; Metal coatings; B; EPMA; C; Oxidation; ULTRAHIGH TEMPERATURE ALLOY; RESISTANT COATINGS; SILICIDE COATINGS; MO; MICROSTRUCTURE; STRENGTH; MOSI2;
D O I：
10.1016/j.corsci.2023.110990
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A MoSiB based coating was applied to the 1st-generation MoSiBTiC alloy using pack cementation process. After conditioning at 1300 degrees C for 10 h in air, the coating developed into four layers: an oxide layer, a MoSi2 layer with Mo5Si3 and MoB precipitates, a Mo5Si3 layer, and a MoB+Mo5SiB2 (T2) layer. However, visible holes often formed in the coating due to defects, and the oxidation proceeded to the substrate during subsequent cyclic oxidation. In a controlled test on a MoSiBTiC alloy with lower TiC volume fraction, an intact coating formed after the conditioning at 1300 degrees C and provided an effective oxidation resistance.
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页数：9
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