提高直升机齿轮传动干运转能力的离子注入技术  

Ion Implantation for Improving Survivability of Helicopter Gear Transmission Under Oil-Out Condition

作　　者：于敏[1] 戴振东[1] 薄玉奎[1] 薛同博[2] 刘贵龄[2] 董创[3] 

机构地区：[1]南京航空航天大学高新技术研究院,南京210016 [2]中国航空工业总公司第608研究所,株洲412002 [3]大连理工大学三束材料改性国家重点联合实验室,大连116024

出　　处：《南京航空航天大学学报》2006年第1期11-15,共5页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：某国防预研基金资助项目

摘　　要：根据直升机传动系统干运转能力的要求,用销盘试验机测定了M o离子注入量及润滑条件对齿轮钢12C r2N i4A摩擦副摩擦因数和磨损量的影响。结果表明:M o离子注入对摩擦因数影响很小,但可大大降低磨损率,对增强材料耐磨性有很好的作用。在FZG齿轮试验机上进行了齿轮改性前后的对比试验,结果表明,未改性齿轮干运转30 m in后齿面明显胶合,而改性处理后的齿轮经45 m in干运转试验,齿轮工作良好,齿面光整,仍然可以继续使用,具有很好的干运转性能。To meet the requirement of the survivability of the helicopter gear transmission under the oilout condition, effects of the Mo^＋ implantation and the lubrication condition on the friction, scuffing and wear of the alloy 12Cr2Ni4A are measured by using pin-on-disk test rig and the FZG gear test instrument. The pin-on-disk test rig is used to measure the friction coefficient and the wear rate of the modified surface with various dosages of Mo^＋ under different lubricating conditions. Results show that the Mo^＋ implantation has a slight effect on the friction coefficient, but it greatly decreases the wear rate of samples. Load carrying ability of gears before and after Mo^＋implantation is tested by the FZG gear test instrument. The unmodified gears are scuffed after 30 min under the oil-out condition. However, the smooth and well-operated tooth surface is obtained for the implanted gears after 45 rain under the oil-out condition.

关 键 词：离子注入 表面改性 千运转 摩擦磨损性能 

分 类 号：TH117[机械工程—机械设计及理论]