Phase transformation sequence of mixed-structural electroless Ni-197at% P deposit

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	Phase transformation sequence of mixed-structural electroless Ni-197at% P deposit
	Yang, Li-Kun ; Jiang, Yi-Feng ; Yang, Fang-Zu ; Wu, De-Yin ; Tian, Zhong-Qun ; Wu DY(吴德印) ; Tian ZQ(田中群)
刊名	http://dx.doi.org/10.1016/j.surfcoat.2013.07.049
	2013-11-25
关键词	Amorphous materials Deposits Differential scanning calorimetry Grain growth Melting point Nanocrystalline alloys Phase transitions Transmission electron microscopy X ray diffraction
英文摘要	The microstructure and phase transformation sequence of an electroless Ni-19.7at.% P (Ni-11.5wt.% P) deposit upon heat treatment are studied in this work. X-ray diffraction and high-resolution transmission electron microscopy analysis show that the deposit has a mixed-structure. A very small volume fraction of nanocrystalline grain with size of approximately 1-5nm is interspersed in an amorphous matrix. The differential scanning calorimetry curves of the deposit at heating rates ranging from 10°C/min to 50°C/min indicate that the apparent activation energy (δEx) during the crystallisation process is 178.8kJ/mol. Upon heating the deposit to 300°C, the nanocrystalline becomes agglomerated. Upon heating to 400°C, the Ni and Ni3P phases are precipitated from the retained amorphous matrix and the nanocrystalline is coarsened. The Ni and Ni3P phases mainly exhibit grain growth from 500°C to 600°C. Above 880°C, the deposit undergoes a melting process. A small amount of P is volatilised from the liquated deposit. ? 2013 Elsevier B.V.
语种	英语
出版者	Elsevier
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89208]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Yang, Li-Kun,Jiang, Yi-Feng,Yang, Fang-Zu,et al. Phase transformation sequence of mixed-structural electroless Ni-197at% P deposit[J]. http://dx.doi.org/10.1016/j.surfcoat.2013.07.049,2013.
APA	Yang, Li-Kun.,Jiang, Yi-Feng.,Yang, Fang-Zu.,Wu, De-Yin.,Tian, Zhong-Qun.,...&田中群.(2013).Phase transformation sequence of mixed-structural electroless Ni-197at% P deposit.http://dx.doi.org/10.1016/j.surfcoat.2013.07.049.
MLA	Yang, Li-Kun,et al."Phase transformation sequence of mixed-structural electroless Ni-197at% P deposit".http://dx.doi.org/10.1016/j.surfcoat.2013.07.049 (2013).