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white corrosion
相关语句
  白色腐蚀
     The white corrosion products on hot dip Zn Al alloy coating exposed to seawater in dynamic aerated immersion were investigated by means of XRD and TEM.
     采用XRD和TEM对热浸锌铝合金镀层在动态充气海水全浸试验时所形成的白色腐蚀产物进行了研究。
短句来源
  “white corrosion”译为未确定词的双语例句
     A new chromating solution ZG-87 has been developed for various Zinc deposits from commonly used processes using chloride, alkaline zincate or cyanide bath. The effects of various factors on the performance of ZG-87 are discussed. The salt spray tests indicated that the passivated Zinc deposit showed no white corrosion products until 300 hrs and red products until 1000 hrs.
     配制了一种适用于氯化物、锌酸盐、氰化物等三种常见镀锌工艺的高耐蚀钝化溶液ZG—87,讨论了各种因素对其使用性能的影响,大量的盐雾试验结果表明,经此工艺钝化后的二级镀锌层,在中性盐雾试验中,300小时后出现白锈,1000小时后出现红锈。
短句来源
     The flow structure displayed a reverse jet current in the lateral cavity and white corrosion on the lateral enlargement surface.
     试验细部结构特征,发现侧空腔内的反射回漩流和突扩弧形面上的白色蚀带。
短句来源
  相似匹配句对
     Corrosion
     腐蚀
短句来源
     White
     颜色文化——白色
短句来源
     White
     清新白色
短句来源
     White Electrostatic Conductive Coating and Its Performace of Corrosion Resistance
     白色导静电防腐蚀涂料的研究
短句来源
     The Corrosion of Bridge
     桥梁工程中的腐蚀问题
短句来源
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  white corrosion
The appearance of gray veil in C3P on ZnNi does not correlate with corrosion failure such as white corrosion or red rust.
      


A new chromating solution ZG-87 has been developed for various Zinc deposits from commonly used processes using chloride, alkaline zincate or cyanide bath.The effects of various factors on the performance of ZG-87 are discussed. The salt spray tests indicated that the passivated Zinc deposit showed no white corrosion products until 300 hrs and red products until 1000 hrs. An investigation of composites and structures of passivated film has also been made by using XPS and SIMS.

配制了一种适用于氯化物、锌酸盐、氰化物等三种常见镀锌工艺的高耐蚀钝化溶液ZG—87,讨论了各种因素对其使用性能的影响,大量的盐雾试验结果表明,经此工艺钝化后的二级镀锌层,在中性盐雾试验中,300小时后出现白锈,1000小时后出现红锈。通过X射线光电子能谱和二次离子质谱对钝化膜的组成和结构作了初步探索。

The white corrosion products on hot dip Zn Al alloy coating exposed to seawater in dynamic aerated immersion were investigated by means of XRD and TEM. The results show that the corrosion products are typical nanometer microcrystals, containing mainly Zn 4CO 3(OH)6·H 2O, Zn 5(OH) 8Cl 2 and Zn 6Al 2CO 3(OH) 16 ·4H 2O, and that the formation of the nano crystalline corrosion products probably is related with the co precipitation of Zn 2+ and Al 3+ caused by adsorption....

The white corrosion products on hot dip Zn Al alloy coating exposed to seawater in dynamic aerated immersion were investigated by means of XRD and TEM. The results show that the corrosion products are typical nanometer microcrystals, containing mainly Zn 4CO 3(OH)6·H 2O, Zn 5(OH) 8Cl 2 and Zn 6Al 2CO 3(OH) 16 ·4H 2O, and that the formation of the nano crystalline corrosion products probably is related with the co precipitation of Zn 2+ and Al 3+ caused by adsorption. Zn Al alloy coating seawater attack, Al(OH) 3 gel is first produced on the coating surface. Zn and Al hydroxides co precipitate and form double hydroxide when the concentration of adsorbed Zn 2+ ions by the newly produced gel exceeded the critical supersaturation of the interphase nucleation. However, because the growth of the crystals is too low to keep in step with the nucleation, a layer of nano crystalline corrosion products are produced on the surface of the coating finally. [

采用XRD和TEM对热浸锌铝合金镀层在动态充气海水全浸试验时所形成的白色腐蚀产物进行了研究。结果表明 :腐蚀产物主要由典型的纳米级Zn4 CO3(OH) 6·H2 O ,Zn5(OH) 8Cl2 和Zn6Al2 CO3(OH) 16·4H2 O微晶组成 ,而这种纳米晶的形成与由吸附引起的Zn2 +和Al3+离子的共沉积有关 ;镀层表面腐蚀后首先生成Al(OH) 3凝胶 ,当凝胶吸附的锌离子超过异相形核的临界过饱和度时 ,发生锌、铝氢氧化物的共沉淀 ,生成双氢氧化物。由于晶体长大速度较慢不能与沉淀形核同步进行 ,导致镀层表面形成了微晶状态的腐蚀产物

The hydraulic characteristics of a sluice after a sudden lateral enlargement and vertical drop were measured to insure the stabilization and safety of the sluice sidewall.The flow along the sidewall,the air discharge,the air concentration,and time-averaged pressure distribution were measured in a 1∶30 model.The flow structure displayed a reverse jet current in the lateral cavity and white corrosion on the lateral enlargement surface.The impact band on the sidewall is the main factor influencing the hydraulic...

The hydraulic characteristics of a sluice after a sudden lateral enlargement and vertical drop were measured to insure the stabilization and safety of the sluice sidewall.The flow along the sidewall,the air discharge,the air concentration,and time-averaged pressure distribution were measured in a 1∶30 model.The flow structure displayed a reverse jet current in the lateral cavity and white corrosion on the lateral enlargement surface.The impact band on the sidewall is the main factor influencing the hydraulic characteristics.The back swirl reduces the effective ventilation area of the side jet.The impact band flow reflection reduces the sidewall pressure and initiates sidewall cavitation.

为保证池水建筑物侧墙的稳定与安全,通过模型试验研究了突扩突跌体型的侧墙上的水力特性。采用比尺为1¨30的水工模型,在高流速条件下观测了侧墙水流流态、通气量、掺气浓度及时均压力分布。试验细部结构特征,发现侧空腔内的反射回漩流和突扩弧形面上的白色蚀带。侧墙等压线分析发现:侧墙水流冲击带是引发或影响各种侧墙水力特性的主导因素,冲击带水流向上游反射,缩小了侧空腔的有效通气面积;冲击带水流的折冲作用,可能诱发侧墙空化空蚀破坏。

 
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