丁二酸对化学镀Ni-P-纳米TiO_2复合镀层性能的影响
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摘要
研究了丁二酸对化学镀Ni-P纳米TiO_2复合镀层性能的影响。镀液组成及工艺条件为:NaH_2PO_2·H_2O 32g/L,NiSO_4·6H_2O 26g/L,一水合柠檬酸20g/L,CH_3COONa·3H_2O 15g/L,十二烷基苯磺酸钠40 mg/L,纳米TiO_2微粒0.6~1.5g/L,丁二酸4~24 mg/L,温度(88±1)°C,pH值4.8±0.2,时间1h。加入适量的丁二酸,能够提高镀液的稳定性,加快沉积速率,提高镀层中磷的质量分数、显微硬度及耐蚀性。丁二酸的最佳质量浓度为2g/L。
Effect of succinic acid on the properties of electroless Ni-P-nano TiO_2 composite coatings was investigated.The bath composition and process conditions were as follows:NaH_2PO_2·H_2O 32 g/L,NiSO_4·6H_2O 26 g/L,citric acid monohydrate 20 g/L,CH_3COONa·3H_2O 15 g/L,sodium dodecyl benzene sulfonate 40 mg/L,nano TiO_20.6~1.5 g/L,succinic acid 4~24 mg/L,temperature(88±1)℃,pH value 4.8±0.2,time 1 h.Addition of appropriate amount of succinic acid can improve the stability of the bath,accelerate the deposition rate and increase the mass fraction of phosphorus in the coating,and improve the hardness and corrosion resistance.The optimal mass concentration of succinic acid was 2 g/L.
Effect of succinic acid on the properties of electroless Ni-P-nano TiO_2 composite coatings was investigated.The bath composition and process conditions were as follows:NaH_2PO_2·H_2O 32 g/L,NiSO_4·6H_2O 26 g/L,citric acid monohydrate 20 g/L,CH_3COONa·3H_2O 15 g/L,sodium dodecyl benzene sulfonate 40 mg/L,nano TiO_20.6~1.5 g/L,succinic acid 4~24 mg/L,temperature(88±1)℃,pH value 4.8±0.2,time 1 h.Addition of appropriate amount of succinic acid can improve the stability of the bath,accelerate the deposition rate and increase the mass fraction of phosphorus in the coating,and improve the hardness and corrosion resistance.The optimal mass concentration of succinic acid was 2 g/L.
引文
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[2]吕正茂,李成明,吕反修.金刚石复合镀层的研究现状[J].表面技术,2003,32(6):1-3.
[3]沈岳军,刘定富,施力匀.柠檬酸体系复合化学镀镍-磷-纳米二氧化钛稳定剂的研究[J].电镀与涂饰,2016,35(21):1122-1126.
[4]郑智,李雨,刘定富.硫酸铈与硫酸铜对化学镀镍的影响[J].电镀与环保,2016,36(1):27-30.
[5]仵亚婷,汤义武,胡文彬,等.化学镀镍液稳定性测试评估方法[J].电镀与环保,2004,24(2):27-29.
[6]李宁.化学镀实用技术[M].北京:化学工业出版社,2004.
[7]白亚楠.Ni-纳米TiO2复合镀层的制备与性能研究[D].沈阳:沈阳理工大学,2011.
[8]陈尔跃,杨晓超,徐娟,等.镍磷纳米化学复合镀中纳米二氧化钛的分散性研究[J].电镀与涂饰,2015,34(16):898-902.
[9]刘定富,崔东,魏世洋.化学镀镍-磷合金镀层中磷的测定[J].电镀与精饰,2012,34(1):39-41.
[10]李志林,王波,关海鹰.纳米TiO2-Ni-P复合镀层的制备工艺及性能研究[J].腐蚀与防护,2006,27(8):394-396.