TY - JOUR
T1 - Effect of LaB 6 on the thermal shock property of MoSi 2 -SiC coating for carbon/carbon composites
AU - Li, Ting
AU - Li, Hejun
AU - Shi, Xiaohong
PY - 2013/1/1
Y1 - 2013/1/1
N2 - LaB 6 -MoSi 2 -SiC and MoSi 2 -SiC coatings were prepared on the surface of carbon/carbon composites by pack cementation method. The crystal structures of the coatings were measured by X-ray diffraction. The morphologies and element distributions were also analyzed by scanning electron microscopy and energy dispersive spectroscopy, respectively. The effect of LaB 6 on the microstructure and thermal shock resistance of MoSi 2 -SiC coating was investigated. The results indicated that the LaB 6 -MoSi 2 -SiC coating possessed a denser structure and superior thermal shock resistance. After 25 times of thermal cycling oxidation between 1773 K and room temperature, the weight losses of the LaB 6 -MoSi 2 -SiC and MoSi 2 -SiC coated samples were 0.627% and 2.019%, respectively.
AB - LaB 6 -MoSi 2 -SiC and MoSi 2 -SiC coatings were prepared on the surface of carbon/carbon composites by pack cementation method. The crystal structures of the coatings were measured by X-ray diffraction. The morphologies and element distributions were also analyzed by scanning electron microscopy and energy dispersive spectroscopy, respectively. The effect of LaB 6 on the microstructure and thermal shock resistance of MoSi 2 -SiC coating was investigated. The results indicated that the LaB 6 -MoSi 2 -SiC coating possessed a denser structure and superior thermal shock resistance. After 25 times of thermal cycling oxidation between 1773 K and room temperature, the weight losses of the LaB 6 -MoSi 2 -SiC and MoSi 2 -SiC coated samples were 0.627% and 2.019%, respectively.
KW - Carbon/carbon composites
KW - Thermal cycling oxidation
UR - http://www.scopus.com/inward/record.url?scp=84870530776&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2012.09.124
DO - 10.1016/j.apsusc.2012.09.124
M3 - 文章
AN - SCOPUS:84870530776
SN - 0169-4332
VL - 264
SP - 88
EP - 93
JO - Applied Surface Science
JF - Applied Surface Science
ER -