%0 Journal Article
%T Lubricity of Ionic Liquids Containing Phosphonate Functional Groups as Lubricants for Aluminum-on-Steel Contact<br>含膦酸酯官能团离子液体对钢/铝摩擦副的润滑作用研究
%A MU Zong-gang
%A <br>牟宗刚
%A 梁永民
%A 张书香
%A 王海忠
%A 刘维民
%J 摩擦学学报
%D 2004
%I 
%X A series of novel functional room-temperature ionic liquids (RTILs) of 1-(O,O-diethyl phosphonyl-n-propyl)-3-alkylimidazolium hexafluorophosphate was prepared and evaluated as a kind of promising lubricant for aluminum-on-steel contact. The viscosity and density of the synthetic RTILs were measured. The glass transition temperature and the heat capacity jump associated with the transition from the non-equilibrium glass to the metastable supercooled liquid were analyzed. The lubricity of the synthetic RTILs as the lubricants for a aluminum-on-steel contact was comparatively investigated on an SRV test rig in a ball-on-disc configuration, using conventional ionic liquid 1-propyl-3-octylimidazolium hexafluorophosphate (coded as LP308) as a comparison. The worn Al alloy surfaces lubricated with different mediums were observed on a scanning electron microscope, while the chemical states of some typical elements in the neat synthetic ionic liquids and on the worn Al surface lubricated therewith were analyzed by means of X-ray photoelectron spectroscopy. It was found that the new ionic liquids showed higher viscosity than LP308. The synthetic ionic liquids had excellent friction-reducing and antiwear ability to the aluminum-on-steel contact and were superior to phosphazene (X-1P) in terms of the friction-reduction ability and load-carrying capacity, which was attributed to the formation of chemical adsorption and tribo-chemical reaction boundary film on the worn surface during sliding process. Of the three synthetic ionic liquids, showed the best lubricity and antiwear ability for the aluminum-on-steel system.
%K ionic liquid
%K 1-(O
%K O-diethyl phosphonyl-n-propyl)-3-alkylimidazolium hexafluorophosphate
%K lubricant
%K tribological behavior<br>离子液体
%K 1-（O，O-二乙基膦酰丙基）-3-烷基咪唑六氟磷酸盐
%K 润滑剂
%K 摩擦学性能
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=2F467A5C6371C830162AAA01D7DAD07A&aid=37CAAD771CAC3D66&yid=D0E58B75BFD8E51C&vid=B91E8C6D6FE990DB&iid=E158A972A605785F&sid=E39A3F4E3A67639B&eid=88D36036CFF69B3C&journal_id=1004-0595&journal_name=摩擦学学报&referenced_num=1&reference_num=15