放电等离子烧结制备炭块的工艺研究

Study on Preparation of Carbon Blocks by Spark Plasma Sintering

传统炭素制品生产工艺多、周期长,且制品质量不易控制,生产成本高。通过压型配料混合均匀的炭质粉料和煤沥青粘结剂,利用放电等离子综合应用系统,以及对电流、电压、脉冲频率进行控制,实现温度的可控性;对压坯进行烧结,使其成为具有一定体积密度和机械强度的坚硬的烧结体。采用等离子体烧结技术制备炭素材料,突破了传统工艺的缺陷,生产周期大大缩短,是绿色的可持续发展的新技术,有望在未来炭素工业中得到应用。

Conventional carbon products require complicated methods and long synthesis cycle due to unstable quality and high cost of the products.Evenly mixed carbonaceous powder and coal tar pitch binder were pressed into a mold,while temperature was controllable by using spark plasma integrated application system in which the current,voltage and pulse frequency were regulated.Compression bulks were sintered to form sintering bulks with certain volume density and mechanical strength.Plasma sintering method breakthroughs the defects of traditional craftsmanship and can shorten synthesis cycle,which is an environmental friendly method and expected to be used in carbon industry in the future.