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鋰離子電池封裝用Al-Ni層狀材料的復(fù)合過程及應(yīng)用特性研究
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中南大學(xué)材料科學(xué)與工程學(xué)院,中南大學(xué)材料科學(xué)與工程學(xué)院,中南大學(xué)材料科學(xué)與工程學(xué)院,中南大學(xué)材料科學(xué)與工程學(xué)院,中南大學(xué)材料科學(xué)與工程學(xué)院,中南大學(xué)材料科學(xué)與工程學(xué)院,中南大學(xué)材料科學(xué)與工程學(xué)院

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Bonding Process and Application Properties of an Al-Ni layer composite sheet for Lithium-ion Battery Packaging
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School of Materials Science and Engineering, Central South University,School of Materials Science and Engineering, Central South University,School of Materials Science and Engineering, Central South University,School of Materials Science and Engineering, Central South University,School of Materials Science and Engineering, Central South University,School of Materials Science and Engineering, Central South University,School of Materials Science and Engineering, Central South University

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    摘要:

    采用冷軋復(fù)合工藝制備了用于鋰離子電池封裝用的層狀A(yù)l-Ni雙金屬復(fù)合帶材。針對軋制復(fù)合工藝和熱處理退火工藝對Al-Ni雙金屬復(fù)合帶材界面化合物種類、結(jié)構(gòu)及其應(yīng)用特性進(jìn)行了研究。結(jié)果表明：合適的軋制變形量是實(shí)現(xiàn)Al層和Ni層復(fù)合的關(guān)鍵因素，在本實(shí)驗(yàn)中復(fù)合軋制的變形量應(yīng)控制在50%～60%之間。在后續(xù)退火工藝中，Al層和Ni層界面上首先形成的是Al3Ni相，該相有利于Al層和Ni層實(shí)現(xiàn)牢固的冶金結(jié)合。隨著退火時間的延長，隨后會形成較脆性的Al3Ni2相，該相以層狀形式存在兩層金屬中間，容易造成Al層和Ni層金屬的剝離，因此通過退火工藝控制界面化合物形成的類型和結(jié)構(gòu)十分重要。實(shí)驗(yàn)發(fā)現(xiàn)，在698K～748K溫度范圍內(nèi)退火1小時的軋制復(fù)合Al-Ni雙金屬復(fù)合帶材，具有好的抗折彎效果，穩(wěn)定的焊接性能和合適的電阻值，可以作為鋰電池封裝材料來進(jìn)行使用。

    Abstract:

    The cold roll bonding process of an Al-Ni layer composite sheet which is applied as a brazing solder for the welding of Nickel and Aluminum structures in the Lithium-ion battery packaging is investigated. The effects of roll bonding and annealing treatment on the application properties and the interface compounds of Al-Ni composite sheet are also studied. The results show that the appropriate rolling reduction to bond and produce Al-Ni layer composite sheet is about 50% to 60% deformation degree. During the annealing process, the first formed Al3Ni phase in the interface of Al and Ni is benefit to the bonding of such two metals but the sequent formed Al3Ni2 phase results in the cracks and separation of the Al-Ni layers. The roll bonding Al-Ni layer composite sheet acquires good bending endurance, stable weldability and suitable electrical resistivity with annealing from 698K to 748K for 1 hour.

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余琨,熊漢青,戴翌龍,滕飛,范素峰,喬雪巖,文利.鋰離子電池封裝用Al-Ni層狀材料的復(fù)合過程及應(yīng)用特性研究[J].稀有金屬材料與工程,2016,45(5):1100~1105.[Yu Kun, Xiong Hanqing, Dai Yilong, Teng Fei, Fan Sufeng, Qiao Xueyan, Wen Li. Bonding Process and Application Properties of an Al-Ni layer composite sheet for Lithium-ion Battery Packaging[J]. Rare Metal Materials and Engineering,2016,45(5):1100~1105.]
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  • 收稿日期:2014-03-20
  • 最后修改日期:2014-07-20
  • 錄用日期:2014-08-12
  • 在線發(fā)布日期: 2016-06-02
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