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明:晶态Ni-W镀层为Ni基固溶体,表面显微硬度为1 100,粗糙度为454.41 nm,摩擦因数为0.52左右；Ni-W镀层具有较强的抗磨能力,磨损表面主要呈现轻微擦伤现象,镀层剥落而造成磨粒磨损,磨损率剧增.关键词:Ni-W合金镀层；电镀；摩擦因数；磨损性能Fraction and wear properties of crystalline Ni-W alloy coating prepared by electroplatingKONG De-jun, WU Yong-zhong, WANG Xiao-feng(College of Mechanical Engineering, Changzhou University, Changzhou 213016, China)Abstract:Ni-W alloy coating was prepared on the N80......
Deposition Technology and Microhardness of Electrochemical Deposited Ni-W Alloy Nanocrystalline WANG Li-ping1,WU Yu-cheng1,HUANG Xin-min1,HU Xiao-ye1,Shu Xia1,WANG Wen-fang1 (1.Faculty of Materials..., such as concentration of sodium tungstate, current density, PH value and operating temperature, which have obvious influence on the electrodeposition of Ni-W alloy nanocrystalline. By extreme difference analysis......
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对该材料的流变应力有显著影响,流变应力随变形温度的升高而降低,随应变速率的提高而增大.当变形温度高于550 ℃时,合金流变曲线呈现出明显的动态再结晶特征,合金显微组织为完全的动态再结晶组织,该合金的热变形激活能为411.55 kJ/mol.关键词:热压缩变形；电铸；Ni-W合金；变形激活能；本构方程Flow stress behavior of electroformed Ni-W alloy... compression deformation of electroformed Ni-W alloy was studied in the temperature range of 400?600 ℃ and strain rate of 0.001?0.1 s?1 by using Gleeble?1500 thermal simulation tester. The relationships among......
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Trans. Nonferrous Met. Soc. China 31(2021) 1842-1852 Nucleation and growth mechanism of electrodeposited Ni-W alloy Meng-chao YE1,2, Ting-ting DING1,2, Hao ZHOU1,2, Feng-jiao HE1,2 1. College...; accepted 25 March 2021 Abstract: The nucleation and growth mechanism of electrodeposited Ni-W alloy were investigated. Cyclic voltammetry (CV) and chronoamperometry (CA) were used to examine......
用改良静滴法测量液态Ni-W二元合金的密度 肖锋1,方亮3,陶再南1 (1.九州工业大学卫星投资事业实验室,北九州 804-8550,日本;2.重庆工学院,重庆,400050;3.重庆大学应用物理系,重庆,400044) 摘要:为了给研究合金在凝固过程中发生收缩,迁移现象和偏析提供科学依据,我们用改良静滴法对钨浓度为0到15%的液态Ni-W二元合金的密度进行了测量.结果表明:Ni-W二元合金的液态密度随温度的增加而减少,但随合金中钨浓度的增加而增加;液态Ni-W二元合金的摩尔体积随温度和合金中钨浓度的增加而增加.金属钨在Ni-W二元合金中的偏摩尔体积约为(10.80-1.35×10-3T)×10-6m3·mol-1. 关键词:Ni-W合金; 密度; 改良静滴法; 摩尔体积; 钨; Ni-W alloy; density; modified sessile drop method......
熔融Ni-W合金的表面张力研究 Xiao Feng1,肖锋2,傅亚2,方亮3,刘兰霄2,赵红凯2,杨仁辉2 (1.Chongqing Institute of Technology,Chongqing 400050,China;2.重庆工学院,重庆,400050;3.重庆大学,重庆,400044) 摘要:采用改进静滴法测定了1773~1873 K温度范围内熔融Ni-(5~10)W(质量分数,%)合金在Al2O3基板上于Ar+3%H2气氛下的表面张力数据.熔融Ni-W合金的表面张力随着温度的升高而降低.在此基础上采用Butler模型推导了表面张力随温度与浓度的变化情况,计算了合金体系中元素的偏聚情况.表面张力的计算结果与测量值的符合度较高.W在合金表面的浓度低于体相浓度. 关键词:表面张力; Ni-W合金; 偏聚; surface tension; Ni-W alloys......
): 814-817. [12]WU Yi-yong, CHANG Do-yon, KIM Dong-so, et al. Influence of boric acid on the electrodepositing process and structures of Ni-W alloy coating[J]. Surface and Coatings Technology, 2003... Electrochem, 1989, 19: 839-845. [19]周婉秋. Ni-W镀层的非晶化机制[J]. 电镀与涂饰, 1997, 10(1): 22-25. ZHOU Wan-qiu. Amorphism of Ni-W alloy deposit[J]. Electroplating and Finishing, 1997, 10(1): 22-25. (编辑陈爱华) 基金项目: 国家......
Ni-W合金镀膜析出硬化的研究 杨中东1,赵祖欣1,李庆伦1 (1.东北大学表面技术研究所,沈阳,110006) 摘要:由于Ni-W合金镀层硬度高,耐磨,耐蚀等特点,在工程上的应用受到了人们的注目.Ni-W合金镀层热析出硬化的原因,目前理论上还不十分清楚.作者从X衍射结构分析入手,对析出硬化原因做了理论上的探讨. 关键词:电镀; Ni-W合金; 析出硬化; X衍射; [全文内容正在添加中] ......
