化学镀镍液的缓冲容量与沉积速度的关系

研究了用于化学镀镍液中的三种不同缓冲体系的pH值随加入酸量的变化情况，得出了相应的缓冲容量曲线。结果发现，NaAc—HAc缓冲体系的缓冲性能优于柠檬酸和丁二酸组成的缓冲体系，并且当化学镀镍液中同时含有醋酸、丁二酸、柠檬酸和其相应的盐时，这种复合体系在缓冲容量上存在着一定的正协同效应。在此基础上设计了缓冲性能较好的化学镀镍液。并对缓冲容量不同的溶液进行实镀测试。结果表明，高缓冲容量的镀镍液有着很好的pH值稳定性和稳定的镀速，进一步明确了化学镀镍的镀速是受pH值直接影响的。     

导电纤维对树脂基复合材料电磁屏蔽效能的影响

本文采用几种不同的导电纤维，通过改变它们的种类、配比和含量，来研究不同的纤维含量、不同的纤维搭配对树脂基复合材料电磁屏蔽效能的影响。     

真空镀箔技术及烫印技术在墙纸中的应用

介绍利用真空镀箔技术和烫印技术生产高反射、高光泽的仿金箔墙纸,并对其主要生产工艺及设备情况进行探讨.     

表面强化技术在进口汽车维修中的应用

本文分析了进口汽车在维修过程中出现的问题，概述了表面强化技术及其在现代进口汽车维修中的应用，这种新工艺对节省材料，降低进口汽车的维修成本。促进进口设备国产化有重要意义。     

新型薄膜式热电偶切削温度测量传感器

研制了一种集成在刀头内的新型薄膜式热电偶。在切削的同时，能快速直接地测量切削温度。镀膜工艺采用了先进的磁控溅射和离子镀技术，成功地解决了绝缘、镀膜牢固性等问题。该热电偶测温接点位于刀尖，响应迅速，时间常数约为0．8ms；并且在0～600℃的测温范围内具有良好的线性和热稳定性。详细论述了传感器的结构设计、薄膜热电偶的制作、静态标定、动态标定以及检测电路。当应用于现场切削试验时，传感器能快速响应瞬态切削温度。     

多层印制板金属化孔镀层缺陷成因分析及相应对策

分析了金属化孔镀层的主要缺陷及产生原因 ,从各主要工序出发 ,提出了如何优化工艺参数 ,进行严格的工艺及生产管理 ,以保证孔化质量的方法     

“Practical Difficulties associated with the Electrodeposition of Chromium”

Nickel coatings can be completely removed from steel articles without appreciable attack on the steel by anodic treatment in 50 per cent. (by volume) sulphuric acid solution with an applied potential not exceeding 2·0 volt.

The method is suitable for the removal of thick nickel coatings as an alternative to machining, which is expensive and removes some steel. It can also be used to determine the average thickness of nickel or of composite nickel-copper coatings on el by loss in weight.     

Immobilization of metal-containing waste in alkali-activated lime-RHA cementitious matrices

This research investigated the immobilization potential of alkali-activated lime-rice husk ash (RHA) for synthetic Cr(OH)₃, Fe(OH)₃, Zn(OH)₂ and zinc cyanide plating sludge. The binder consists of hydrated lime and RHA at a weight ratio of 45:55. Waterglass (Na₂SiO₃) with SiO₂/Na₂O ≈ 3 and anhydrous sodium carbonate (Na₂CO₃) were used as alkali activator between 0 and 8 wt.% of the binder. Results showed that Zn(OH)₂ addition causes a considerable strength development in control and sodium silicate-activated samples but only after 14 days. Similar observations were found for the sample loaded with 10 wt.% plating sludge but this only occurred after 28 days. A possible explanation for these phenomena is that the initial formation of calcium zincate, which has a set retarding effect, inhibits early strength development. At later ages, calcium zincate dissolves and Zn is taken up in the formation of C-S-Z-H solid solutions leading to strength development. These phenomena were not observed from the sodium carbonate-activated lime-RHA matrices. In these, it is believed that zinc/calcium carbonates readily form inhibiting calcium zincate and C-S-Z-H formation. Despite this, carbonate-containing mixes with up to 30 wt.% plating sludge gave a 14-day strength and Cr concentration in TCLP leachate that meet the regulatory limit for landfilling.     

氧化稀土对NiP化学镀层及其复合镀层耐磨性的影响

讨论了氧化稀土对Ｎｉ Ｐ 化学镀层及其复合镀层在有冲击和振动载荷作用下滑动磨损行为的影响，并采用数学线性回归的方法得到了不同镀层的磨损量与磨损时间之间的关系曲线，计算出不同镀层的相对耐磨性。     

Removal of heavy metals in plating wastewater using carboxylated alginic acid

Potentially, biosorption is an economic process for metal sequestering from water. Carboxylated alginic acid showed high uptake capacities for heavy metals of 5-6 meq/g dry mass. For application to actual plating waste-water, the carboxylated alginic acid was immobilized using PVA. In order to remove chelating or organic materials in plating wastewater, oxidation using sodium hypochlorite was performed as a pretreatment. When carboxylated alginic acid bead was applied in a packed-bed contactor, the breakthrough point of copper ion in the acid-alkaline wastewater appeared around 350 bed volumes; the breakthrough point of nickel ion in the chelating wastewater emerged around 200 bed volumes. The adsorption capacity for heavy metal of the carboxylated alginic acid bead was higher than that of a commercial ion exchanger (IR-120 plus) in plating wastewater.