Preparation of pyrolytic carbon coating on graphite for inhibiting liquid fluoride salt and Xe-135 penetration for molten salt breeder reactor
Preparation of pyrolytic carbon coating on graphite for inhibiting liquid fluoride salt and Xe-135 penetration for molten salt breeder reactor
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熔盐增殖反应堆抑制液态氟盐和Xe-135渗透石墨热解碳涂层的制备
DOI：
10.1016/j.jnucmat.2014.09.006
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发表时间：
2015
影响因子：
3.1
通讯作者：
Bai Shuo
中科院分区：
文献类型：
--
作者：
Xia Huihao;Zhou Xingtai;Huai Ping;Bai Shuo
采用固定床沉积法在石墨表面制备了粗糙层状热解碳涂层（RLPyC），用于熔盐增殖堆中抑制液态氟盐和Xe 135的渗透。RLPyC涂层的石墨化度为44%，与石墨基体接触良好。构建高压反应器以评价熔融盐在等静压石墨（IG-110，TOYO TANSO CO.，有限公司）在1.01、1.52、3.04、5.07和10.13 × 105 Pa压力下处理12 h。压汞和熔盐渗透实验表明，IG-110在1.52 × 105 Pa下的孔隙率和熔盐渗透量分别为18.4%和13.5wt%，远低于RLPyC在10.13 × 105 Pa下的孔隙率和熔盐渗透量（分别为1.2%和0.06wt%）。建立了一个真空装置来评估Xe 135在石墨中的渗透。RLPyC涂层石墨的氦扩散系数为2.16 × 10− 12 m2/s，远低于石墨的1.21 × 10− 6 m2/s。热循环实验表明，该涂层具有良好的热稳定性.包覆石墨能有效地抑制液体氟盐和Xe 135的渗透。
A fixed-bed deposition method was used to prepare rough laminar pyrolytic carbon coating (RLPyC) on graphite for inhibiting liquid fluoride salt and Xe135penetration during use in molten salt breeder reactor. The RLPyC coating possessed a graphitization degree of 44% and had good contact with graphite substrate. A high-pressure reactor was constructed to evaluate the molten salt infiltration in the isostatic graphite (IG-110, TOYO TANSO CO., LTD.) and RLPyC coated graphite under 1.01, 1.52, 3.04, 5.07 and 10.13 × 105Pa for 12 h. Mercury injection and molten-salt infiltration experiments indicated the porosity and the salt-infiltration amount of 18.4% and 13.5 wt% under 1.52 × 105Pa of IG-110, which was much less than 1.2% and 0.06 wt% under 10.13 × 105Pa of the RLPyC, respectively. A vacuum device was constructed to evaluate the Xe135penetration in the graphite. The helium diffusion coefficient of RLPyC coated graphite was 2.16 × 10−12m2/s, much less than 1.21 × 10−6m2/s of the graphite. Thermal cycle experiment indicated the coatings possessed excellent thermal stability. The coated graphite could effectively inhibit the liquid fluoride salt and Xe135penetration.
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DOI：
10.1016/j.carbon.2013.10.058
发表时间：
2014-03
期刊：
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影响因子：
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影响因子：
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影响因子：
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