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Preparation and property evaluation of electroless Ni-P coatings on AZ91D magnesium alloy LI Xue-song(李雪松)1, 2, ZHANG Wen-xue(张文雪)1, JIANG Zhong-hao(江中浩)1 1. Key Laboratory of Automobile... as the complexing agent, the Ni-P coatings on AZ91D magnesium alloy were prepared. The influence of pH value of the bath on the content of phosphorus, microhardness and corrosion resistance of the deposits......
文章编号:1004-0609(2010)06-1189-06 钎焊及时效过程中化学镀Ni-P与Sn-3.5Ag的界面反应 黄明亮1, 2,柏冬梅1, 2 (1. 大连理工大学 材料科学与工程学院,大连 116024； 2. 大连理工大学 辽宁省先进连接技术重点实验室,大连 116024) 摘 要:研究磷含量为6.5%(质量分数)的化学镀Ni-P薄膜与Sn-3.5Ag钎料合金之间的润湿行为,以及Sn-3.5Ag/Ni-P焊点在钎焊和时效过程中的界面反应.结果表明:250 ℃时,直径为(2.3±0.06) mm的Sn-3.5Ag焊球在化学镀Ni-6.5%P薄膜上钎焊后得到的润湿角约为44?,铺展率约为67%；焊点界面由Ni3Sn4 IMC层,及较薄的Ni-Sn-P过渡层构成Ni3P晶化层；钎焊过程中界面Ni3Sn4 IMC的生长速率与钎焊时间t1/3呈线性关系；时效过程......
了非晶组织的形成. 关键词: 稀土;电沉积;Ni-P合金; 中图分类号: TG113 收稿日期:1999-09-18 基金:河北省自然科学基金!资助项目 ( 5992 37); Influence of RE elements on microstructures of Ni-P alloy electro-plating coatings Abstract: The effect of the rare earth (RE) elements on microstructure of electro depositing Ni P alloy coatings was investigated. The results of XRD and TEM......
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Trans. Nonferrous Met. Soc. China 26(2016) 799-805 Electroless plating and growth kinetics of Ni-P alloy film on SiCp/Al composite with high SiC volume fraction Meng FANG1, Ling HU2, Lei YANG2, Chang... 2015 Abstract: After Sn/Pd activating, the SiCp/Al composite with 65% SiC (volume fraction) was coated by electroless Ni-P alloy plating. Surface morphology of the composite and its effect on the Ni-P......
, respectively. The friction coefficients and wear performances of Ni-P coating and 5052 aluminum alloy were investigated with wear test, the wear resistance mechanism of Ni-P coating was discussed. The results... and propagation are produced and peeled at the wear edge, and the coating is not worn out, showing good wear performances. Key words: Ni-P coating; aluminum alloy 5052; friction coefficient; wear......
Ni on the AZ91D magnesium alloy, containing sulfate nickel, was given in this paper. The nucleation mechanism of Ni-P deposits on the AZ91D magnesium alloy was studied by using XRD and SEM.The electroless Ni-P deposits were preferentially nucleated on the β (Mg17Al12) phase and extended to the primary and eutectic α phases of the AZ91D magnesium alloy. 关键词:Electroless deposition; AZ91D magnesium......
Trans. Nonferrous Met. Soc. China 24(2014) 3825-3833 Homogenization pretreatment and electroless Ni-P plating on AZ91D magnesium alloy Can SUN1, Xing-wu GUO1,2, Shao-hua WANG1, Jia-cheng GUO1, Wen... α and primary α phase [11]. Several prior studies have shown that the deposition of Ni-P coating is preferentially nucleated on the position of β phases and spread to eutectic-α and primary-α phase......
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