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环烷酸铅和烷基水杨酸铅的微波原位合成及其摩擦学性能
引用本文:欧忠文,刘维民,徐滨士,丁培道,马世宁. 环烷酸铅和烷基水杨酸铅的微波原位合成及其摩擦学性能[J]. 化学物理学报(中文版), 2001, 14(4): 445-452. DOI: 10.1088/1674-0068/14/4/445-452
作者姓名:欧忠文  刘维民  徐滨士  丁培道  马世宁
作者单位:欧忠文,刘维民(中国科学院兰州化学物理所);徐滨士,丁培道(重庆大学材料科学与工程学院,);马世宁(全军装备维修表面工程研究中心,)  
摘    要:在液体石蜡中采用微波技术原位合成了油溶性环烷酸铅(LN)和十二烷基水杨酸铅(LAS).在高速低负荷(r=1500±10 rpm、 P=196~392 N)和低速高负荷(r=300±10 rpm、 P=800 N)两种条件下,用四球摩擦磨损试验对LN、 LAS和对应的羧酸进行了摩擦学性能评价,用往复式摩擦试验机考察了LN和LAS抗磨减摩性能.结果表明: LN具有良好的抗磨减摩性能和中等的极压性能,且各项摩擦学性能指标均好于LAS.为弄清其作用机理,从分子结构分析了产生摩擦学性能差异的原因,并用SEM及XPS研究了磨斑表面.结果发现: 摩擦过程中, LN和LAS都能在摩擦副表面形成吸附膜且部分吸附膜发生摩擦化学反应产生了铅氧化物转化膜,但所形成的吸附膜和转化膜厚度不同.

关 键 词:环烷酸铅  烷基水杨酸铅  原位合成  摩擦学性能  作用机理

In-situ Synthesis of Lead Naphthenate andLead Alkylsalicylate as by Microwave-assisted Technique and Tribological Behaviors
Ou Zhongwen,Liu Weimin,Xu Binshi,Ding Peidao,Ma Shining. In-situ Synthesis of Lead Naphthenate andLead Alkylsalicylate as by Microwave-assisted Technique and Tribological Behaviors[J]. Chinese Journal of Chemical Physics, 2001, 14(4): 445-452. DOI: 10.1088/1674-0068/14/4/445-452
Authors:Ou Zhongwen  Liu Weimin  Xu Binshi  Ding Peidao  Ma Shining
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Abstract:Oil soluble lead naphthenate(LN) and lead alkylsalicylate(LAS) were in-situ synthesized by microwave assisted-technique in liquid paraffin. The tribological properties of LN , LAS and corresponding carboxylic acid were evaluated with four-ball tribo-tester under the condition of high speed (r=1500±10rpm) low load (P=196~392N) and low speed (r=300±10rpm)high load(P=800N). The anti-wear and friction-reducing of LN and LAS as additives were also evaluated with reciprocation tribo-tester. The results indicated that LN additive exhibited good anti-wear property, good friction-reducing efficiency and middling extreme pressure property, and all tribological properties of LN as additive was better than LAS. The reason producing the performance difference of tribological behaviors was analyzed for revealing tribological mechanism, and wear scar surface was characterized with photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Analytical results showed that LN and LAS could formed adsorbing film on steel-steel friction pair and part of film transformed oxidic film protecting the rubbing surfaces from wear by means of tribochemical reaction, but the thickness of films was different.
Keywords:Lead naphthenate   Lead alkylsalicylate   In-situ Synthesis by microwave   Tribological behaviors   Action mechanism              
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