Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第30卷    第3期    总第252期    2020年3月

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文章编号:1004-0609(2020)-03-0559-07
冷轧过程中NiPt5合金的结构演变及磁性能
王一晴1, 2,许彦亭1,闻 明1, 2,管伟明1,陈家林2,甘建壮1,郭俊梅1

(1. 贵研铂业股份有限公司 稀贵金属综合利用国家重点实验室,昆明 650106;
2. 昆明贵金属研究所,昆明 650106
)

摘 要: NiPt合金溅射靶材是半导体工业制备NiPtSi接触层的重要原材料。本文对NiPt5合金在冷轧过程中的结构演变及磁性能进行研究。结果表明:NiPt5合金在冷轧过程中微观结构的演变经历位错缠结、位错壁、含小角晶界的拉长亚晶粒、新晶界形成4个阶段。晶粒细化主要是位错的聚集、湮灭和重排所导致。NiPt5的矫顽力随着轧制变形量的增加而增加,这归因于冷轧诱导的缺陷及内应力对畴壁移动的阻碍。剩磁与NiPt5合金择优取向密切相关,(200)织构导致剩磁升高。Ni合金较高的磁各向异性使 取向的织构对提高靶材质量十分有利。

 

关键词: 溅射靶材;NiPt合金;冷轧;位错;磁性能

Microstructure evolution and magnetic properties of Ni-5Pt alloy during cold rolling
WANG Yi-qing1, 2, XU Yan-ting1, WEN Ming1, 2, GUAN Wei-ming1, CHEN Jia-ling2, GAN Jian-zhuang1, GUO Jun-mei1

1. State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming 650106, China;
2. Kunming Institute of Precious Metals, Kunming 650106, China

Abstract:Nickel-platinum (NiPt) alloy sputtering target was used in semiconductor industries for the formation of Ni-Pt-silicide to realize the contact and interconnection function. The microstructure evolution and magnetic properties of NiPt5 alloy were studied during cold-rolling process. The results show that, during the cold-rolling process, the microstructure evolution of NiPt5 alloy includes four stages: dislocation entanglement, dislocation wall, elongated sub-grain with small angle grain boundary, and the formation of new grain boundary. The grain refinement is mainly attributed to the accumulation, annihilation and rearrangement of dislocations. The coercivity of NiPt5 increases with increasing the rolling deformation, which is attributed to the defects and internal stress induced by cold rolling that can obstruct the movement of domain wall. The remanence is closely related to the preferred orientation of the NiPt5 alloy. (200) plane texture leads to the increase of remanence. The high magnetic anisotropy of Ni alloy makes plane texture enable to improve the quality of target material.

 

Key words: sputtering target; NiPt alloy; cold rolling; dislocation; magnetic properties

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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