镀层

The effects of blackening time and the mass fraction of phosphorus of the coating on the morphology of a porous coating was investigated.

以不同磷的质量分数的镀层为研究对象，研究了腐蚀时间、镀层中磷的质量分数对镀层表面构造一种多孔结构的形貌特征的影响。

The results show that the brush-plating coating is even and compact from section plane with good toughness and adhesion. The microhardness of the coating is 230.6HV0.5 which is 3 times of cast aluminium substrate. The wear resistance of the coating is 3 times of cast aluminium substrate. But the friction coefficient of the coating is 0.70 which is more high than that of the substrate, which is favorable for the fixed conjugate between the axis sheath and the axis seat of the gear-box.

结果表明，镀层厚度分布均匀、致密，镀层与基体界面清晰，未出现氧化物夹层，镀层的韧性和结合强度均较好；测得碱性铜及铸铝基体的显微硬度分别为230.6、74.2HV0.5；碱性铜的镀制使基体表面显微硬度及耐磨性均提高了2倍多，磨损状况明显改善。

The factors affecting the adhesion strength of Fe-Mn alloy electrodeposit to the substrate were investigated with the consideration of pretreatment, process parameter and post-treatment.

镀层的结合强度是修复机械零部件的关键指标，本文研究了Fe-Mn合金镀前处理、施镀工艺镀后处理等因素对镀层结合强度的影响及其作用机理。

Mixture microcrystal deposit obtained in high concentration of tungsten and current density.

当镀液中钨离子含量低，电流密度低时，镀层为晶态结构；当镀液中钨离子含量高，电流密度大时，镀层呈非晶态或混合微晶态结构。

In depth profile analysis of silvering layer on phosphor bronze stripe has been determined through rate of alloy calculated with the rate of pure component by glow discharge emission spectrometry .

应用辉光放电发射光谱分析技术，从纯金属求得难以测定的试样表层合金的溅射率，对磷青铜薄带的镀层合金进行表面逐层分析，得到镀层中银和铜含量随深度的变化曲线，同时测得了镀层的厚度。

The electrochemical analysis results show that the polarization potential of gradient coating was obviously lower than that of the non-gradient coating electrode.

电化学测试结果表明，与非梯度镀层相比，梯度镀层的极化电位在各电流密度条件下都显著低于非梯度镀层电极。

A new method for evaluating powdering rating of galvanneal coatings was studied based on computer techniques of image processing and pattern recognition theory,and a system of the powdering recognition and rating on the galvanneal coating had been designed.

针对传统人工进行合金化镀锌板镀层粉化级别评定的不足，提出基于计算机视觉的镀层粉化评价方法，自行开发了镀层识别与评级系统。

It is concluded that the main influence factors on the micro-hardness of the nickel deposit are sulphamate concentration and electrolyte temperature. The most hard nickel deposit layer was obtained with sulphamate concentration 700g/L, cathodal current density 5A/dm2, pulse current frequency 800Hz, pulse current duty cycle 0.6, electrolyte pH value 4.0, electrolyte temperature 70℃.

试验结果表明：主盐浓度和镀液温度是影响镀层硬度的显著因素；当主盐氨基磺酸镍的浓度为700g/L，阴极电流密度为5A/dm2，脉冲频率为800Hz，占空比为0.6，镀液pH值取4.0，镀液温度为70℃时，可以制得显微硬度最高的镍镀层。

Ni-Fe alloy coatings with varied ferrum concentration were prepared by brush plating using soluble anode.

采用可溶性阳极电刷镀技术制备镍铁合金镀层，研究了合金元素Fe在刷镀层中的作用机理，分析了镀层的组织结构和性能。

In this paper, the processes of electroless Ni-P, Ni-Fe-Co-P and Ni-Co-B platingwere investigated by using graphite pieces as samples first, and then Ni-P, Ni-Fe-Co-Pand Ni-Co-B coatings were deposited onto carbon nanofibers by using the selectedelectroless processes. The composition, structure of the coatings and the properties ofthe metal-coated carbon nanofibers were also studied.

本文首先利用石墨基片研究了化学镀镍磷合金、镍铁钴磷合金和镍钴硼合金工艺，然后利用优化的化学镀工艺在纳米碳纤维表面镀覆了Ni-P、Ni-Fe-Co-P和Ni-Co-B镀层；研究了镀层的成分、结构以及镀层纳米碳纤维的性能。

Further more, the simplified analysis method on stressed-skin effect of corrugated steel sheet is also discussed in detail.

此外还比较详细地探讨了蒙皮效应的简化分析方法。

If I had known her telephone number,I would have called her.

要是我知道她的电话号码，我就打电话给她了。