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首页> 外文期刊>International Journal of Electrochemical Science >Properties of Electrodeposited Ni-B-ZrO2 Composite Coatings
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Properties of Electrodeposited Ni-B-ZrO2 Composite Coatings

机译：电沉积Ni-B-ZrO 2 复合涂层的性能

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摘要

Ni-B coatings have high hardness and high wear resistance which make them suitable for automotive,aerospace, petrochemical, textile and electronics industries. Further improvement in properties(especially the corrosion behavior) will extend their range of applications and thus make them suitableto high wear and severe corrosion applications of oil and gas industries. Taking a note of aboveconsideration, novel Ni-B-ZrO2 coatings were synthesized. In the present study, a comparison ofproperties of Ni-B and Ni-B-ZrO2 coatings in their as deposited state is presented to elucidate theeffect of ZrO2 addition on structural, surface, thermal and electrochemical properties of binary Ni-Bcoatings. Mild steel samples were used as substrate material and the coatings were deposited throughconventional electrodeposition process using dimethylamine borane (DMAB) as reducing agent. It isnoticed that the addition of ZrO2 has a significant influence on crystal structure, surface roughness,thermal properties and corrosion behavior Ni-B coatings. It is noticed that Ni-B coatings areamorphous in their as deposited state while addition of ZrO2 significantly improves the crystallinity.Surface analyses confirm the formation of fine and dense structures in both Ni-B and Ni-B-ZrO2coatings. However ZrO2 addition increases the surface roughness. The electrochemical polarizationtests confirm that incorporation of ZrO2 into Ni-B matrix considerably improves the corrosionresistance due to reduction in active area of Ni-B matrix.
机译：Ni-B涂层具有高硬度和高耐磨性，使其适用于汽车，航空航天，石化，纺织和电子行业。性能（尤其是腐蚀行为）的进一步改善将扩展其应用范围，从而使其适用于石油和天然气行业的高磨损和严重腐蚀应用。考虑到以上考虑，合成了新颖的Ni-B-ZrO2涂层。在本研究中，提出了Ni-B和Ni-B-ZrO2涂层在沉积状态下的性能比较，以阐明ZrO2添加对二元Ni-B涂层的结构，表面，热和电化学性能的影响。将低碳钢样品用作基材，并使用二甲胺硼烷（DMAB）作为还原剂，通过常规电沉积工艺沉积涂层。众所周知，ZrO2的添加对Ni-B镀层的晶体结构，表面粗糙度，热性能和腐蚀行为具有重要影响。注意到Ni-B涂层在沉积状态下是无定形的，而ZrO2的添加显着提高了结晶度。表面分析证实了Ni-B和Ni-B-ZrO2涂层均形成了细密的结构。但是，添加ZrO2会增加表面粗糙度。电化学极化测试证实，由于Ni-B基体的活性面积减小，将ZrO2掺入Ni-B基体中可显着提高耐腐蚀性。

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