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在流化床包覆炉中，采用化学气相沉积法系统地研究了制备包覆燃料颗粒的工艺参数和性能之间的关系，摸索出了疏松热解碳层（沉积温度１３５０℃，乙炔气体浓度８５％）、致密热解碳层（沉积温度１４３５℃，丙烯气体浓度２５％）和碳化硅层（沉积温度１６００℃，甲基三氯硅烷浓度１．８０％）的最佳工艺条件，总结出了经验公式，制备出了疏松热解碳层密度为０．９９ｇ／ｃｍ３、致密热解碳层密度为１．８９ｇ／ｃｍ３和碳化硅层密度为３．２１ｇ／ｃｍ３的合格ＴＲＩＳＯ型包覆燃料颗粒。
In a fluidized bed furnace, the relationship between process parameters and properties of coated fuel pellets was systematically investigated by chemical vapor deposition. The results showed that the porosity of pyrolytic carbon layer (deposition temperature 1350 ℃, acetylene gas concentration 85%), dense pyrolytic carbon layer (deposition temperature of 1435 ℃, propylene gas concentration of 25%) and silicon carbide layer (deposition temperature of 1600 ℃, methyltrichlorosilane concentration of 1.80%) the best process conditions, concluded The empirical formula was used to prepare a qualified TRISO coating fuel with a density of 0.99 g / cm3 for loose pyrolytic carbon, a density of 1.89 g / cm3 for dense pyrolytic carbon and a density of 3.21 g / cm3 for silicon carbide Granules.