| 柴油机油铅腐蚀性能研究 |
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| 引用本文： | 徐杰,夏青虹,张峰,武志强.柴油机油铅腐蚀性能研究[J].中国炼油与石油化工,2018,20(2):71-78. |
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| 作者姓名： | 徐杰 夏青虹 张峰 武志强 |
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| 作者单位： | 1. 中国石油化工股份有限公司石油化工科学研究院;2. 石油化工科学研究院7室; |
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| 基金项目： | CI-4柴油机油的研制 |
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| 摘 要： | 采用自建的高温老化腐蚀模拟试验考察了柴油机油配方体系中基础油和含锌、硫多效添加剂对润滑油铅腐蚀性能的影响，对老化试验后的铅片进行了XPS表面化学分析。结果显示：润滑油的铅腐蚀性能受基础油的氧化安定性影响，调合基础油的氧化安定性越好，铅腐蚀越低；在老化腐蚀试验中，二烷基二硫代磷酸锌(ZDDP)是比二烷基二硫代氨基甲酸锌(ZDDC)更有效的铅腐蚀抑制剂；不同加量ZDDP在高、低腐蚀铅片表面形成了总量不同的玻璃态磷酸锌热反应膜，这是造成铅腐蚀程度不同的主要原因。
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| 关 键 词： | 柴油机油，铅腐蚀，基础油，ZDDP，XPS |
| 收稿时间： | 2018-03-09 |
| 修稿时间： | 2018-04-15 |
A Study of Lead Corrosion of Diesel Engine Oil |
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| Xu Jie,Xia Qinghong,Zhang Feng,Wu Zhiqiang.A Study of Lead Corrosion of Diesel Engine Oil[J].China Petroleum Processing and Petrochemical Technology,2018,20(2):71-78. |
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| Authors: | Xu Jie Xia Qinghong Zhang Feng Wu Zhiqiang |
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| Abstract: | The effect of base oils,sulfur-containing multi-functional additives and dispersants in formulated diesel lubricants on lead corrosion was evaluated by a self-established high temperature corrosion bench test.Test lead coupons were analyzed by XPS to determine the resulting surface chemistry.The results showed a close correlation between the oxidation stability of base oil blend and the lead corrosion of formulated diesel lubricants.The zinc dialkyldithiophosphate(ZDDP)and zinc dialkyldithiocarbamate(ZDDC)have formed different protective films on lead coupon surfaces.A more or less amount of the protective film formed is the main factor affecting the degree of lead corrosion.The glassy zinc phosphates protective film formed by ZDDP is more effective than the zinc sulfides film formed by ZDDC.The interaction between dispersants and ZDDP had a significant impact on lead corrosion. |
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| Keywords: | diesel engine oil lead corrosion base oil ZDDP XPS |
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