316L不锈钢纤维毡的微波烧结研究

Microwave Sintering of 316L Stainless Steel Fiber Felt

摘要:

烧结不锈钢纤维多孔材料是一种结构功能一体化材料，在冲击能量吸收和过滤分离等领域有广泛应用。本文利用微波加热法制备了316L不锈钢纤维多孔材料，研究了微波烧结工艺对材料微观结构和力学性能的影响。研究表明微波烧结工艺明显降低了材料的烧结温度，缩短了烧结时间，由此抑制了纤维杆上晶粒的生长，材料的力学性能也得到了提升。微波电磁场在金属纤维间引发的微电弧可能起到了加快烧结进程的作用。

Abstract:

Sintered stainless steel fiber felt (SSSFF) is a kind of porous material promising for functional and structural applications such as energy absorption and solid/gas filtration etc. In this work microwave heating was used for sintering of 316L stainless steel fiber felt and the effect of microwave heating on the sintering profile ，microstructure and mechanics performance of the sintered stainless steel fiber felt was investigated by means of μ-CT，SEM and so on. The experiment result showed that in contrast with conventional sintering method, microwave heating can sinter stainless steel fiber felt at lower temperature within shorter time, and the higher mechanic performance of SSSFF can be achieved by this means. The microwave field induced arcing between metal fibers may accelerate the sintering process.