%0 Journal Article
%T LaserablationbehaviorsofC/SiCcompositesinair
%A SU
%A Meng
%A CHENG
%A Laifei
%A LUAN
%A Xingang
%A ZHANG
%A Litong
%J Έ΄ΊΟ²ΔΑΟΡ§±¨
%P 37-47
%D 2013
%X Ablationbehaviorsofsiliconcarbide(SiC)coated2Dcarbonfiberreinforcedsiliconcarbidematrix(designatedas2DC/SiC)compositespreparedbychemicalvaporinfiltration(CVI)wereinvestigatedbyacontinuouswaveCO2laser.The2DC/SiCspecimenswereexposedunderlaserfor0.5sinambientair,andthelaserpowersvariedfrom500Wto1500W.A3Dfiniteelementmodelwasestablishedtocalculatethetemperaturedistributioninthelaserablationprocess.Theablationdepth,widthandprofileweremeasuredbyLaserConfocalMicroscope(LCM).Theresultsindicatethattheincreaseofablationdepthfollowsalinearrelationwiththeincreaseoflaserpower,andtheincreaseofablationwidthfollowsasimilartrendwiththeincreaseoftheisothermdiameterof1712‘ζ.Theablatedsurfacecanbedistinguishedintothreedifferentregionsbyscanningelectronmicroscope(SEM)observation,includingablationcenter,transitionzoneandablationfringe.TheablationbehaviorsofcarbonfibersandSiCmatricesindifferentregionswerepresentedanddiscussedinthestudy.
%K laser
%K ablation
%K C/SiC
%K finite
%K element
%K analysis
%K surface
%K temperature
%K ablation
%K profile
%K ablation
%U http://fhclxb.buaa.edu.cn/CN/abstract/abstract11999.shtml