排序方式: 共有45条查询结果,搜索用时 8 毫秒
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常温除油清洗剂的制备与应用 总被引:3,自引:0,他引:3
研制了一种以表面活性剂为主要成分的常温除油清洗剂,讨论了各成分的作用,并对其性能进行了检测。结果表明,该清洗剂具有除油力强、成本低、可以在常温下使用等特点。 相似文献
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磷化预处理用清洗剂之比较 总被引:1,自引:0,他引:1
研究了磷化预处理时磷化件金属表现上污物的清洗,对一些常用的表面活性剂性能及相互之间的协调使用进行了研究,并获得了相应的配方。 相似文献
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Zinc phosphating of 6061-Al alloy using REN as additive 总被引:1,自引:0,他引:1
Zinc phosphate coating formed on 6061-A1 alloy was studied with the help of electrochemical measurements, Fourier Transform Infrared (FTIR), and Scanning Electron Microscopy (SEM), after dipping it in phosphating solutions containing different concentrations of Rare Earth Nitrate (REN). REN, which acted as an accelerator in the phosphating solution, could catalyze the surface reaction and accelerate the phosphating process. REN mainly enabled the P in the phosphate coating to exist in the form of PO4^3- and promoted the hydrolysis of phosphatic acid in a liquid layer at the cathodes. This resulted in the evolution of H2 at the cathodes, which increased the local pH value and in turn drove the precipitation of the phosphate coating. Additionally, REN was adsorbed on the surface of the aluminum substrates to form a gel during the phosphating process. These gel particles were good crystal seeds, which helped to form phosphate crystal nuclei and possess the function of a nucleation agent that could decrease the phosphate crystal size. The corrosion resistance of the formed zinc phosphate coatings was improved. 相似文献
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