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镀层
    The microhardness of the coatings went up with increase of the SiC concentration and the voltaic consistency.
    且镀层硬度随着SiC浓度的增加而增加,也随着阴极电流密度的增加而增加。
    the deposition rate and compositions of the coatings could be controlled by controlling c(Co2+)/c(Ni2+)in bath;
    通过控制镀液中c(Co2+)/c(Ni2+)的比值,可控制沉积速率及镀层中镍、钴元素的相对含量;
    The corrosion behaviors of 45# carbon steel,1Cr18Ni9Ti,304 stainless steel,and Ni-P alloy coatings in sulfur-bearing solution were studied by potentiostatic polarization method and gravimetric method.
    用失重法和恒电位极化法研究了45#碳钢、1Cr18Ni9Ti、304不锈钢和Ni-P合金镀层在含S介质中的腐蚀性.
    Passivation appears in Ni-P alloy coatings,and diffusion controlled by anode appears in 45# carbon steel.
    Ni-P合金镀层出现了钝化区; 45#碳钢出现了阳极控制的扩散过程.
    As the temperature increases,the corrosion rate increases,and the polarization rates of 1Cr18Ni9Ti and 304 stainless steel rise,whereas the passivation of Ni-P alloy coatings weakens. 1Cr18Ni9Ti,304 stainless steel and Ni-P alloy coatings are corrosion resistance materials in sulfur-bearing solution.
    温度升高,腐蚀速率增大,1Cr18Ni9Ti和304不锈钢的极化率变大,Ni-P合金镀层的钝化性能减弱,1Cr18Ni9Ti、304不锈钢和Ni-P合金镀层均是含S介质中的耐蚀材料.
    The results show that crystalline phase transition temperature is about 300℃, and the composite particles in the plating solution results in the decreasing of crystallization temperature of the coating as absorbing the H ions. A complex structure of Ni3P+Ni+UFD is achieved after crystallizing in the coatings.
    300℃左右时,镀层开始晶化,与Ni-P复合镀相比,复合粒子的加入使晶化温度降低:时效晶化后,复合镀层的结构为Ni3P+Ni+UFD的混合结构。
    They retain a low specific wear rate of 4×10-17m3/ (m·N),a low friction coefficient of 0.02 to 0.1 and a high load bearing capacity up to 5GPa. These coatings have given excellent industrial results for a wide range of cutting and forming applications.
    它们能保持很低的特定磨损率4×10~(-17)m~3/(m·N),0.02~0.1的低摩擦因数及高达5GPa的承载能力,这些镀层在广泛的切削,成形应用中获得了极好的工业成果。
    The results show that Si3N4 particles have impeded the depositing rate but greatly improved the wearing resistance of coatings and the composite coatings keep almost the same anti-corrosion as the Ni-W-P alloy coatings.
    试验结果表明:Si_3N_4纳米颗粒的加入影响了镀层的沉积速率,提高了镀膜的耐磨性,Ni-W-P/Si_3N_4复合镀膜仍具有与Ni-W-P镀膜相近的优异耐蚀性能。
    The composite coatings of n-Al2O3/Ni were prepared by electro-brush plating.
    利用电刷镀技术制得了含n-Al2O3颗粒的纳米复合镀层
    Under loads of 60N and 140N, the fatigue life of the coatings reached over 1000000 cycles.
    复合镀层在60 N和140 N载荷下均有较好的抗接触疲劳性能,其寿命达到百万次以上;
    Hardness of the coatings could reach to HV675 and HV652, higher about 50% than the nickel coating.
    显徽硬度高,可达到HV692,比镍镀层硬度提高约50%。
    The effect of annealing treatment on the microstructure of tantalum coatings deposited on the TiNi alloys was investigated by atomic force microscopy (AFM) and X-ray diffraction analysis (XRD). The results show that the surface roughness increase and the metastable β -Ta transform to α-Ta after annealing treatment.
    采用原子力显微镜(AFM)和X射线衍射分析(XRD)研究了退火处理对TiNi合金钽镀层微观组织结构的影响,研究表明:采用多孤离子镀在TiNi合金表面沉积得到了β-Ta镀层,经退火处理后,钽镀层的表面粗糙度增加,亚稳定的β-Ta相完全转变为稳定的α-Ta相.
    The formula was determined with orthogonal test and measuring the adhesion, porosity and comparing the brightness of the composite coatings. The influences of pH value and temperature of the solution on the qualities of the coating was studied and the way of putting nano-SiO_2 particles into the solution was determined.
    运用正交试验法,通过测量镀层孔隙率、结合强度和对镀层光亮度的比较,筛选了复合镀溶液配方,试验了溶液pH值和温度对镀层质量的影响,确定了纳米SiO_2微粒的加入方法。
    According to the characteristic of application of engineering an optimized mathematical theory has been applied in this research to improve the corrosion resistance and the wear resistance of the coatings of Ni-Cu-P electroless plating and broaden its application.
    为了提高化学镀Ni-Cu-P的耐蚀性和耐磨性并拓宽其应用,采用正交优化理论,按照工程化应用的特点,研究Ni-Cu-P镀液主要成分对化学沉积Ni-Cu-P合金镀层性能及镀速的影响。
    Cyanide-free electroplating baths for deposition of gold and gold alloy coatings, using sulphurous gold complexes that are stable for a relatively long time, can be used with current density over 1 A/dm2 and are practically odor-free, are obtained when the sulphurous compounds used are mercaptosulfonic acids, dye sulfide sulfonic acids or salts thereof.
    使用含硫的金化合物,用于沉积金和金合金镀层的无氰电镀浴,当含硫化合物使用巯基磺酸、硫化磺酸染料或它们的盐时,能保持长时间的稳定,电流密度可超过1 A/dm2,并且几乎无味。
    When particle concentration of MoS2 in the bath is in the range of 3-11g/L, Ni-MoS2 composite coatings obtained present obvious effect of wear resistance and antifriction. That is due to the formation of in terfacial MoS2 film and hardness increase of composite coating.
    当镀液中MoS2浓度在3- 11g/L时,所获得的Ni-MoS2复合镀层具有明显的耐磨减摩效果,其原因是摩擦副界面MoS2膜的生成及复合镀层硬度的提高。
    But when particle concentration of MoS2 in the bath is above 13g/L, the composite coatings obtained present higher wear rate of adhesion.
    但当镀液中MoS2浓度超过 13g/L时,所获得的镀层由于硬度下降反而使粘着磨损加剧。
    Ni-nano Si3N4 composite coatings were prepared by plus-deposition method on the stainless steel.
    采用脉冲电沉积法,在不锈钢上制备Ni-纳米Si3N4复合镀层
    The test results showed that the optimum technology parameters of Ni-Si3N4 composite coatings were obtained as following: Si3 N4 particles concentration 4 g/L,current density 4A/dm2,churn rate 2000r/min.
    结果表明,Ni-纳米Si3N4复合镀层的最佳工艺参数为Si3N4粒子的浓度4g/L,电流密度4A/ dm2,搅拌速度2000r/min。
    In Ni-nano Si3N4 composite coatings,the diameter of nano Si3N4 particles were not exceed 50nm and the nickel grains were fined.
    在Ni-纳米Si3N4镀层中, 纳米Si3N粒子的直径均不超过50nm,且镍晶粒得到细化;
 

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