TY - JOUR
T1 - Enhanced mechanical and electromagnetic-wave-absorption properties of ceramic matrix composites fabricated by novel laser-machining-assisted CVI
AU - Wang, J.
AU - Liu, Y.
AU - Cheng, L.
AU - Chen, X.
AU - Zhou, Q.
AU - Hou, Z.
AU - Ye, F.
N1 - Publisher Copyright:
© 2017 Göller Verlag.
PY - 2018/3
Y1 - 2018/3
N2 - A novel technique based on laser-machining-assisted chemical vapor infiltration (LA-CVI) was proposed and developed to fabricate ceramic matrix composites (CMCs). The results showed that the compressive strength, the shear strength and the bending strength of the C/SiC composites increased by 50.7 %, 11.8 % and 17.8 %, respectively, compared with those of classical CVI-C/SiC composites. The improvement can be attributed to the reopening of the diffusion channels and formation of a dense band and a coating around the channels. On the other hand, the minimum reflection loss (RL) of the C/SiC composites fabricated by means of LA-CVI improved 307 % against that of CVI-C/ SiC composites in the frequency range of 8 GHz to 18 GHz owing to the multiple reflection of the electromagnetic (EM) waves in periodic micro-holes. The advantages of the LA-CVI method with regard to improving mechanical properties and the EM-wave-absorption properties of CMCs were demonstrated.
AB - A novel technique based on laser-machining-assisted chemical vapor infiltration (LA-CVI) was proposed and developed to fabricate ceramic matrix composites (CMCs). The results showed that the compressive strength, the shear strength and the bending strength of the C/SiC composites increased by 50.7 %, 11.8 % and 17.8 %, respectively, compared with those of classical CVI-C/SiC composites. The improvement can be attributed to the reopening of the diffusion channels and formation of a dense band and a coating around the channels. On the other hand, the minimum reflection loss (RL) of the C/SiC composites fabricated by means of LA-CVI improved 307 % against that of CVI-C/ SiC composites in the frequency range of 8 GHz to 18 GHz owing to the multiple reflection of the electromagnetic (EM) waves in periodic micro-holes. The advantages of the LA-CVI method with regard to improving mechanical properties and the EM-wave-absorption properties of CMCs were demonstrated.
KW - Ceramic matrix composites
KW - Electromagnetic-wave-absorbing properties
KW - Laser-machining-assisted CVI
KW - Mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=85045635118&partnerID=8YFLogxK
U2 - 10.4416/JCST2017-00080
DO - 10.4416/JCST2017-00080
M3 - 文章
AN - SCOPUS:85045635118
SN - 2190-9385
VL - 9
SP - 79
EP - 84
JO - Journal of Ceramic Science and Technology
JF - Journal of Ceramic Science and Technology
IS - 1
ER -