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在无电解镍-磷溶液中分散一些特殊的微粒,如氟化石墨,可显著提高所得到的非晶复合层的性能,并能在一些特殊的工程应用。这种无电解复合镀层含P10%左右,并通过加入特殊分散剂,使氟化石墨含量在9%vol,通过Ni-P合金与微粒在性能上的互补扩大了无电解镀层的应用前景。本文研究了无电解Ni-P-(CF)n。复合层和性能及这种无电解复合溶液的维护与管理,确定了最佳工艺体系及最佳工艺条件,研究了这种复合层的自润滑等性能,论述了这种材料的应用前景。 相似文献
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作者研究出一种化学镀Ni-Ci-P三元合金的配方,对相关性能进行了比较;其抗氧化性优于铜表面,可焊性优于同等条件的Ni-P镀层,耐蚀也优于Ni-P氏层。 相似文献
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在无电解镍-磷溶液中分散一些特殊的微粒,如氟化石墨,可显著提高所得到的非晶复合层的性能,并能在一些特殊的工程应用。这种无电解复合镀层含P10%左右,并通过加入特殊分散剂,使氟化石墨含量在9%vol,通过Ni-P合金与微粒在性能上的互补扩大了无电解镀层的应用前景。本文研究了无电解Ni-P-(CF)n复合层和性能及这种无电解复合溶液的维护与管理,确定了最佳工艺体系及最佳工艺条件,研究了这种复合层的自润 相似文献
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本文系统地研究了化学镀液主要组分及pH值、温度、时间等条件对化学沉积Ni Cu P合金镀层的成分的影响。材料与方法在 45 #钢基片上进行化学沉积Ni Cu P合金镀层。基片镀前经砂纸打磨、除油及活化处理。镀液基本组成为 :NiSO4 ·6H2 O 2 5g L、NaH2 PO2 ·H2 O 2 5g L、CuSO4 ·5H2 O 3g L、C6H5O7Na3·2H2 O6 0g L、CH3COONa 2 0g L。镀液pH值用NaOH溶液调整至 1 0 ,镀液温度控制在 90℃ ,时间为 6 0min。每次试验以上述条件为基础 ,变化一项 ,研究其影响。其中各项组成的… 相似文献
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论述了化学镀Ni—Cr—P合金的可行性,指出:镀液的配制方法对镀层含铬量有较大影响,将Cr ̄(6+)还原为Cr ̄(3+),并形成Cr ̄(3+)活性络离子后再加入镀液,控制其它条件在最佳范围,可使镀层含铬量达1%以上。镀液中的铬合剂、稳定剂对镀层质量、镀层组成、沉积速度有较大影响。化学镀过程中应严格控制pH值,因为它对沉积过程有极大影响。化学镀Ni—Cr—P合金镀层具有较小的电阻温度系数,适用于电子零部件的表面处理。 相似文献
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本文研究了无电解镀Ni-P-PTFE工艺及镀层性能,工艺采用了PTFE分散乳液与无电解镀镍混合并使PTFE均匀地分散在镀液中。本文同时讨论二步热处理对镀层性能的影响。 相似文献
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本文阐述了化学沉积法制取非晶态Ni-P镀层的方法,并对非晶态镀层的组织、结构、性能作了详细的研究。结果表明,镀层具有典型的非晶态特征,镀态下显微硬度为HV490,并具有优良的抗腐蚀性能。 相似文献
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陶瓷表面化学镀Ni—Sn—P合金 总被引:1,自引:0,他引:1
闫洪 《上海微电子技术和应用》1998,(2):36-39
主要介绍了以陶瓷为基体的化学镀Ni-Sn-P合金工艺,并对陶瓷表面的预处理工艺和化学镀工艺作了详细的阐述。通过扫描电镜,X射线衍射仪、电容测量仪等仪器对其性能进行了测试,说明该项技术为取代传统的渗银工艺开辟了一条切实可行的新途径。 相似文献
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多功能化学镀镍合金在电子工业中的应用 总被引:2,自引:0,他引:2
李青 《电子工业专用设备》1998,27(4):42-44
综述了多功能化学镀Ni-P、Ni-B、镍三元合金等镀层次其复合化学镀镍合金镀层的耐蚀、电阻、焊接、电磁及磁特性,并概述多功能化学镀镍合金镀层在电子工业中的应用。 相似文献
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化学镀表面处理技术使用范围很广,镀层均匀、装饰性好;在防护性能方面,能提高产品的耐蚀性和使用寿命;在功能性方面,能提高加工件的耐磨性和导电性、润滑性能等特殊功能,因而成为表面处理技术的一个重要部分。钠米化学复合镀是在化学镀液中加入纳米粒子,使其与化学镀层共沉积的工艺技术。文章主要研究在化学镀Ni-P中加入纳米颗粒,在基体表面沉积具有镀厚均匀、耐磨、耐腐蚀、可焊的纳米复合镀层,阐明镀液组成和工艺条件对沉积速率、镀液稳定性、镀层与基体的结合力的影响,获得钠米化学复合镀技术的工艺参数,并对纳米复合镀层的性能进行了研究。 相似文献
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讨论了不锈钢上化学镀Ni-P合金镀层的工艺,重点是不锈钢基体的前处理工艺、镀液温度和PH值.对镀层成分和结构的分析、结合力测试表明,用文中提出的前处理工艺对不锈钢基体处理后,再进行化学镀能获得性能可靠的Ni-P合金镀层. 相似文献
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Nickel plating has been used as the under bump metallurgy (UBM) in the microelectronics industry. In this study, the electroplating
process was demonstrated to be a good alternative approach to produce the Ni-P layer as UBM. The wettability of several commercial
solder pastes, such as Sn-3.5Ag, Sn-37Pb, and Sn-3Ag-0.5Cu solder, on electroplated Ni-P with various phosphorous contents
(7 wt.%, 10 wt.%, and 13 wt.%) was investigated. The role of phosphorus in the wettability was probed. The surface morphology
and surface roughness in electroplated Ni-P was observed with the aid of both field emission scanning electron microscope
(SEM) and atomic force microscope (AFM). The correlation between wettability and phosphorus contents in electroplated Ni-P
was evaluated. As the phosphorous contents increased, the surface morphology of the Ni-P deposit was smoother and surface
roughness of Ni-P became smaller. The improvement of surface morphology and surface roughness enhanced the wettability of
electroplated Ni-P. The interfacial reaction between lead-free solder and electroplating Ni-P UBM was also investigated. 相似文献
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文章主要介绍了pH对通过化学镀镍-磷法制作埋嵌电阻时镍-磷合金层方块电阻的影响。在温度相同的条件下,当镀液的pH不同时,探究了两种基材表面上镍-磷合金层方块电阻与反应时间的关系,并分析了适合用于制作埋嵌电阻的镍-磷合金层方块电阻值,以及最佳的化学镀镍-磷反应pH值。从实验结果可知,当反应时间相同时,随着pH的减小两种基材表面上镍-磷合金层的方块电阻将会逐渐大;适合用于埋嵌电阻制作的化学镀镍-磷反应pH为3.4~3.7,反应时间为3min~8min,方块电阻为15Ω/□~200Ω/□。 相似文献
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Effects of phosphorus content on the reaction of electroless Ni-P with Sn and crystallization of Ni-P 总被引:1,自引:0,他引:1
Y. C. Sohn Jin Yu S. K. Kang D. Y. Shih W. K. Choi 《Journal of Electronic Materials》2004,33(7):790-795
The reaction between electroless Ni-P and Sn and the crystallization behavior of Ni-P were investigated to better understand
the effect of P content on the Ni-P layer. Electroless Ni-P specimens with three different P contents, 4.6 wt.%, 9 wt.%, and
13 wt.%, were used to study the effect of the P content and the microstructure of Ni-P on the subsequent crystallization and
intermetallic compound (IMC) formation during the reaction between Ni-P and electroplated Sn. Ni3Sn4 was the major phase formed in all samples heated up to 300°C, which totally transformed into Ni3Sn2 when samples were heated up to 450°C and the Sn layer was 0.5-μm thick. The IMC formed on the nanocrystalline Ni-P showed
stronger texture compared to that formed on the amorphous Ni-P. Both the IMC thickness and density decreased with P content
in the Ni-P layer, and Ni3Sn4 morphologies varied with P content. Dissolution of Ni into Sn increased with P content, which made IMC size in the bulk Sn
increase with P content. 相似文献
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Shawkret Ahat Liguang Du Mei Sheng Le Luo Wolfgang Kempe Juergen Freytag 《Journal of Electronic Materials》2000,29(9):1105-1109
The effect of aging on the microstructure and shear strength of 62Sn36Pb2Ag/Ni-P/Cu and SnAg/Ni-P/Cu surface mount solder
joints was investigated. An intermetallic (IMC) layer of Ni3Sn4 forms at the interface between both solders and the Ni-P barrier layer and it thickens with aging time, with a decrease in
the thickness of remaining Ni-P layer. The SnAg solder joint initially has a greater shear force than that of SnPbAg, but
it drops dramatically after 250 h aging, and fracture occurs at the Ni-P/Cu interface afterwards, although it initiates in
the solder in the initial stage of aging. The fracture in SnAg solder joint may arise from the excessive depletion of Ni characterized
by a rapid accumulation of P in the remaining Ni-P layer, which results in a poor adhesion between the Ni-P layer and the
Cu substrate. However, for the SnPbAg solder joint, the shear force initially decreases rapidly then asymptotically approaches
a minimum, and fracture occurs from inside solder toward the solder/Ni-P interface. SnPbAg solder joint keeps relatively higher
shear strength compared to SnAg solder joint after long term aging even though it decreases with aging time. 相似文献