Nanosized copper powders prepared by gel-casting method and their application in lubricating oil  

凝胶浇注法制备纳米铜粉及其在润滑油中的应用（英文）

作　　者：Wen-chao CHEN Ji-gui CHENG Hui-pei CHEN Nan-min gg Bang-zheng WEI Lai-ma LUO Yu-cheng WU 陈闻超;程继贵;陈会培;叶楠敏;魏邦争;罗来马;吴玉程(合肥工业大学材料科学与工程学院,合肥230009;安徽省粉末冶金工程技术研究中心,合肥230009)

机构地区：[1]School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China [2]Research Centre for Powder Metallurgy Engineering and Technology of Anhui Province,Hefei 230009,China

出　　处：《Transactions of Nonferrous Metals Society of China》2018年第6期1186-1191,共6页中国有色金属学报（英文版）

基　　金：Project(51674095)supported by the National Natural Science Foundation of China

摘　　要：Nanosized copper powders were prepared by a gel-casting method using copper nitrate, acrylamide（AM） and N, N′-methylenebisacrylamide（MBAM） as the main raw materials. The as-prepared copper powders were characterized by X-ray diffractometry and scanning electron microscopy, and then added into a 48# industrial white oil. Dispersion and wear properties of the compounded lubricating oil were tested. The results show that the copper powders prepared are of high purity, fine dispersibility with mean particle size of about 60 nm and with a narrow particle size distribution. The nanosized copper powders can be well dispersed in the lubricating oil. The addition of the copper powders obviously improves the anti-wear properties of the lubricating oil owing to their good self-repairing performance. Compared with 48# industrial white lubricating oil, the friction coefficient of GCr15 steel with the compounded oil containing 0.6% copper powders reduces by 0.07 and nearly no wear chippings are found in the scratches of the friction counter parts.以硝酸铜、丙烯酰胺和N,N′-亚甲基双丙烯酰胺为原料,采用凝胶浇注法制备纳米铜粉。使用X射线衍射仪和扫描电子显微镜对制备的纳米铜粉进行表征。以纳米铜粉为添加剂加入48#工业白油中,考察其分散性和对润滑性能的影响。结果表明:采用凝胶浇注法可制备纯度高、分散性良好、粒度分布范围窄且平均粒度约为60nm的铜粉。该法制备的纳米铜粉在工业白油中分散良好,能有效提高其抗磨损性能,并在摩擦件表面发生自修复作用。相比于原润滑油,使用加入0.6%纳米铜粉的复合润滑油可以使材质为GCr15钢的磨球摩擦因数降低至0.07,且对磨件表面基本没有磨痕。

关 键 词：nanosized copper powder gel-casting method compounded lubricating oil anti-wear property 

分 类 号：TB383.3[一般工业技术—材料科学与工程] TE624.82[石油与天然气工程—油气加工工程]