A Study of Lead Corrosion of Diesel Engine Oil

被引：0
|
作者：
Xu Jie [1 ]
Xia Qinghong [1 ]
Zhang Feng [1 ]
Wu Zhiqiang [1 ]
机构：
[1] SINOPEC Research Institute of Petroleum Processing
来源：
China Petroleum Processing & Petrochemical Technology | 2018年 / 20卷 / 02期
关键词：
diesel engine oil; lead corrosion; base oil; ZDDP; ZDDC; XPS;
D O I：
暂无
中图分类号：
TE626.3 [];
学科分类号：
081702 ;
摘要：
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.
引用
收藏
页码：71 / 78
页数：8
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