Effects of SPS Pulse Current on Interface of Al90Mn9Ce1/ZrO2 Micro-cellular Structure Composites
Metal/ceramic composite materials with micro-cellular structure which is Al90Mn9Ce1 micron powders coated by 10 wt%ZrO2 nano-sized powder is prepared by spark plasma sintering.Effects of the SPS pulse current on the sintering behavior and the composite interface structure is investigated via SEM,XRD,TEM and EDS.The experimental results show that the pulse current is the key factor to the formation of micro-cellular structure.When the Al90Mn9Ce1/ZrO2 composites are sintered by a large pulse current,the hot focus on ZrO2 nano-powder among Al90Mn9Ce1 alloy particles as well as Al90Mn9Ce1 alloy particle surface,because of the effect of spark plasma and the concentration of the skin effect in short-term.Dividing temperature field on the interface of micro-cellular structure is benefit for the local high-temperature sintering of the ceramic cell walls layer,and also for the diffusion and interfacial bonding between Al90Mn9Ce1 alloy cell body and the ZrO2 nano-sintered cell wall,so as to achieve good sintering.
Al90Mn9Ce1/ZrO2 Spark plasma sintering (SPS) Pulse current Interface Sintering mechanism Diffusion
Zhao Zan Minggang Wang Zhankui Zhao
Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun, 130012, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
61-66
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）