The silicon carbide has the advantages of excellent corrosion resistance , high coefficient of heat conductivity , self - lubricity , small expansion
2.
Aluminum alloy matrix composite has a series of advantages such as low density , high specific strength and specific modulus , high wear resistance , low coefficient of expansion , high coefficient of heat conductivity and high cooling rate
3.
Based on a cone - shaped compound heatshield , a series of research work has been done from the investigation of theoretical analyses of ablative and insulating principles and technical experiments . 1 based on the exploration of improving material performances , a feasible scheme of adding insulating functional layer is proposed ; 2 a simplified calculation method is proposed via establishing fea ( fmite element analysis ) and instantaneous heat transmission is calculated with the mentioned method ; 3 a practical engineering scheme is proposed through a series of experiments ; 4 the interface problems of the function layer are solved through co - curing method and successful samples are manufactured ; 5 in order to estimate properties , the heatshield was anatomized engineering applied possibility is explored on the analyses of performance evaluation by testing mechanical properties , coefficient of heat conductivity and doing dynamic ablative experiments , also , the comparison with that of the required materials is done
4.
The hot - dip - depth and temperature difference between fluid and platelet wall are influenced by many factors , such as the coefficient of heat conductivity of platelet and fluid , the coolant fluid , the knudsen number , and so on . high temperature make kn number become bigger , and then microscale effects become notable
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