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一、引言园环点火托卡马克(CIT,CompactIgnition Tokamak)核聚变装置目前正处于初步设计阶段。园环的尺寸和CIT的高性能特性导致内板界面表面的热流量高达约10MW/M~2。由于碳的原子序数较低,具有较高的抗热冲击性、以及在最新一代托卡马克反应堆上的应用,所以把碳基材料选为CIT的第一幕墙材料。能在1700℃以下维持等离子体保护层表面的要求,对特种碳基材料的选择具有很大影响。
I. INTRODUCTION The Ring Ignition CIT (Compact Ignition Tokamak) nuclear fusion device is currently in the preliminary design stage. The size of the ring and the high performance of the CIT result in heat flux up to about 10 MW / M ~ 2 at the interfacial surface. Carbon-based materials were chosen as the first curtain wall material for CIT because of their lower atomic number, higher thermal shock resistance, and their use in the latest generation of Tokamak reactors. Maintaining the surface of the plasma protection layer below 1700 ° C has a significant impact on the choice of specialty carbon-based materials.