304光亮不锈钢着色工艺研究

报道了在铬酸－硫酸着色液中加入适当的添加剂，对３０４光亮不锈钢进行了化学着色试验，测量了着色过程中的电位－时间曲线，确定了４种颜色的电位差值，还探讨了着色膜的硬化处理和封闭处理工艺。     

不锈钢着色工艺研究

通过正交试验研究了不锈钢着色液配方、温度、时间、电极电位对着色的影响，优化了着色工艺，获得了电极电位与颜色的良好对应关系。测试了着色膜的耐磨性、耐蚀性、变形加工性能，分析了添加剂对不锈钢着色的影响。所得膜层颜色均匀，耐磨性、耐蚀性、变形加工性能良好，工艺维护简单。     

不锈钢化学着彩色工艺的研究

采用以CrO3和H2SO4.4H2O为主要组分加入适量MnSO4.4H2O的着色液对不锈钢进行化学着色,探讨了前处理工艺,着色液温度、质量浓度和着色时间等因素对不锈钢彩色膜的影响。经大量实验得到了最佳的着色液配方和工艺范围:240 g/LCrO3、270 mL/LH2SO4、10 g/LMnSO4.4H2O,θ为50~90℃,t为10~35min。得到了随着温度的升高和时间的延长,膜厚度增加,颜色的变化为茶色→蓝色→金黄色→紫红色→绿色。着色膜经固化处理和封闭处理,表面色彩更均匀,重现性好,耐磨性及耐蚀性明显提高。     

钢铁表面锌镍盐电解着色的研究

钢铁表面着彩色可使其同时具有良好的防护性和外观。通过实验研究出一各锌镍直色工艺。介绍了着色液中各成分的作用及影响着色膜颜色的各因素。采用扫描电子显微技术和光电子能谱分析了膜层形貌和成分。结果发现,ＰＨ值、电流密度及着色时间是影响着色膜颜色的主要因素。着色后,钢铁表面铁含量下降。锌、镍和硫含量增大。表明锌镍和络合剂、稳定剂的存在使得着色膜呈现彩色。     

不锈钢彩色图案的着色方法及其规律

提出了不锈钢表面制备彩色图案的连续着色法。考察了多种颜色连续着色与单一颜色着色的着色电位差异,以及着色面积、底色、表面遮盖物对多种颜色连续着色的影响。在此基础上,结合丝网印刷技术,在不锈钢表面得到由不同颜色构成的彩色图案。结果表明:多种颜色连续着色的电位变化规律与单一颜色着色的不同;底色电位差越小,继续着色得到的颜色种类越多;着色面积和表面遮盖物均不影响多种颜色连续着色的电位变化规律,但覆盖遮盖物后着色时间略微延长。多种颜色连续着色具有工艺简单、颜色可控、彩色图案精美、易工业化等优点。     

彩色不锈钢的着色新技术

本文提出了三氧化铬、重铬酸盐作为着色液进行不锈钢浸渍着色新技术，对于开发彩色不锈钢工艺有着重大意义。     

不锈钢在化学着色时表面形状的变化

利用一种新的测试电极/溶液界面电容的方法测量了不锈钢在化学着色过程中其表面电容值随着色时间的变化规律,并由此得到了试样表面积的变化情况,认为着色过程申存在一个孕育期。在早育期内,试样受到着色液的不均匀侵蚀从而形成了凹凸不平的表面,相应地,这时表面电容值缓慢地随着色时间增加;而颜色开始出现,即彩色膜开始在试样表面形成,表面电容值有一大的飞跃,表明此时形成的彩色膜是多孔的。     

一步法测定彩色不锈钢着色膜的亮度、颜色与厚度

利用光反射原理,设计出一小型镜面反射装置,借助可见分光光度计,通过校正透光率,一步准确地测定出彩色不锈钢着色膜的亮度、颜色与厚度.结果表明:该装置所测亮度与目测结果一致;能轻易地区分直接视觉难以辨别的色彩相近的着色膜;所测着色膜厚度与精密仪器测得数据基本吻合;同时,该装置具有原理简单、操作方便以及成本低廉等特点.     

不锈钢表面着色图案的研究

利用ＫＲ涂料和套印技术，通过多次着色或连续着色工艺，可以随心所欲地在不锈钢表面着上由多种颜色组成的彩色图案。     

交流方波电解法制备彩色不锈钢

用交流方波电解着色法可以制备茶色、蓝色、黄色、红色、绿色等颜色的不锈钢，通过调节电流密度、方波周期和通电周期数等可获得预期色调的着色膜。     

不锈钢表面着彩色图案的研究

利用ＫＲ涂料和套印技术,通过多次着色或连续着色工艺,可以随心所欲地在不锈钢表面着上由多种颜色组成的彩色图案。     

彩色不锈钢的制备

对因科（ＩＮＣＯ）法作了改进，并在着色液中加入适当的添加剂，以降低着色温，度可获得色彩均匀、耐磨性明显提高的彩色不锈钢。陈述了着色时应注意的问题和控制方法。     

不锈钢表面涂覆TiO2薄膜的耐蚀性研究

以钛酸丁酯为原料,采用溶胶-凝胶技术,在不添加其他溶剂的情况下在201型不锈钢基体上制备了TiO2薄膜,采用金相显微镜观察薄膜表面形貌,利用X-射线衍射仪对其晶型进行了表征,同时测量了薄膜试样的极化曲线,实验结果表明:在不锈钢表面涂覆TiO2薄膜能够增强不锈钢基体的耐蚀性。     

Nickel-free manganese bearing stainless steel in alkaline media—Electrochemistry and surface chemistry

The use of austenitic nickel-containing stainless steels as concrete reinforcement offers excellent corrosion protection for concrete structures in harsh chloride bearing environments but is often limited due to the very high costs of these materials. Manganese bearing nickel-free stainless steels can be a cost-effective alternative for corrosion resistant reinforcements. Little, however, is known about the electrochemistry and even less on surface chemistry of these materials in alkaline media simulating concrete pore solutions. In this work a combined electrochemical (ocp = open circuit potential) and XPS (X-ray photoelectron spectroscopy) surface analytical investigation on the austenitic manganese bearing DIN 1.4456 (X8CrMnMoN18-18-2) stainless steel immersed into 0.1 M NaOH and more complex alkaline concrete pore solutions was performed. The results show that the passive film composition changes with immersion time, being progressively enriched in chromium oxy-hydroxide becoming similar to the conventional nickel-containing stainless steels. The composition of the metal interface beneath the passive film is strongly depleted in manganese and enriched in iron; chromium has nearly the nominal composition. The results are discussed regarding the film growth mechanism (ageing) of the new nickel-free stainless steel in alkaline solutions compared to traditional austenitic steels. Combining the results from pitting potential measurements with the composition of the passive film and the underlying metal interface, it can be concluded that the resistance against localized corrosion of the new nickel-free stainless steel relies on the strong chromium(III) and molybdenum (VI) oxy-hydroxide enrichment in the passive film.     

Interfacial adhesion and water resistance of stainless steel–polyolefin improved by functionalized silane

The adhesion strength and water resistance of stainless steel and adhesive resin composites determine the long‐term performance of wires and cables; however, adhesion at stainless steel interfaces is difficult. Herein, we prepared ethylene acrylic acid/linear low‐density polyethylene (EAA/LLDPE) blends with good mechanical and adhesive properties. Silane was anchored to the surface of stainless steel. The effects of silane functionalization on the adhesion surface were investigated by X‐ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The reaction mechanism between the stainless steel, silane, and EAA/LLDPE revealed adhesion was optimized when a 3:7 volume ratio of 3‐methacryloxypropyltrimethoxysilane (MEMO): 3‐aminopropyltrimethoxysilane (A‐1110) was used to modify the stainless steel substrate. SEM images of EAA/LLDPE film peel surfaces found the silane‐treated stainless steel substrates produced rough surfaces with a uniform void indicating the silane treatment enhanced the stainless steel and EAA/LLDPE film interaction. The stainless steel and EAA/LLDPE film adhesion and water resistance improved and the peel strength after water resistance testing at 68°C for 168 h increased from 3.18 N/cm to 9.37 N/cm compared to untreated stainless steel. Silane‐modified stainless steel and EAA/LLDPE blend film composite materials demonstrate potential for application in wires and cables used in environmental corrosion‐resistant applications. POLYM. ENG. SCI., 59:1866–1873, 2019. © 2019 Society of Plastics Engineers     

304不锈钢板的钝化处理及耐蚀性

使用硝酸和重铬酸钾的混合液对304不锈钢板进行了钝化处理。研究发现:不锈钢表面钝化过程伴随着钝化膜的生成和溶解。与304不锈钢板相比,钝化膜中铬和氧的质量分数提高。钝化膜主要由金属氧化物和金属氢氧化物构成。经过钝化处理后,304不锈钢板的自腐蚀电位正移,自腐蚀电流密度降低,膜电阻升高,耐蚀性增强。     

微机控制镜面彩色不锈钢的制备

镜面彩色不锈钢是一种具有广泛应用前景的新型装饰材料。详细介绍了采用微机控制电位法制备镜面彩色不锈钢的工艺过程，对不锈钢氧化膜层的耐蚀性，耐磨性，耐热性，断裂伸长率，弯曲强度等性能进行了测试。     

304L不锈钢钢筋在模拟混凝土孔溶液中的钝化行为

利用恒电位极化法以及Mott-Schottky测试研究了304不锈钢钢筋与Q235钢筋在模拟混凝土孔溶液中的致密性以及生成的钝化膜的半导体特性.研究结果表明：304不锈钢钢筋在模拟混凝土孔溶液中表面形成的p型半导体钝化膜远比普通钢筋形成的n型半导体钝化膜的耐蚀性更高.