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TiN涂层刀具对20CrMo钢的干切削性能的影响及磨损机理 韩文强1,何辉波1,李华英1,冉春华2,杨俊1 (1. 西南大学 工程技术学院,重庆,400715; 2. 西南大学 材料科学与工程学院,重庆,400715) 摘要:为了研究TiN涂层的摩擦性能及TiN涂层刀具对金属切削性能的影响,采用电弧离子镀工艺在45号钢基体和可转位硬质合金车刀YG6上沉积TiN涂层.采用球-盘式摩擦磨损实验仪对45号钢基体和TiN薄膜的干式摩擦学行为进行研究,用TiN涂层和未涂层的YG6车刀在CA6140A普通车床上对20CrMo钢进行干切削,对2种刀具切削过程中的切削力,工件表面质量及刀具磨损程度进行研究.研究结果表明:TiN薄膜和45号钢基体的平均摩擦因数为0.25和0.29;与未涂层刀具相比,TiN涂层刀具切削20CrMo钢时的主切削力可减小20%~40%,刀具耐磨性能约提高45%,寿命提高2倍左右......
TiN粉末的制备方法李吉利,蒋明学西安建筑科技大学材料科学与工程学院摘 要:简要介绍了TiN的性能及主要用途,分析和阐述了TiN粉末制备的研究现状及发展趋势,重点讨论了碳热还原氮化合成TiN粉末存在的问题和前景.关键词:TiN粉末;制备;碳热还原氮化法;CVD法;直接氮化法;......
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In-situ dendrite reinforced Dy-based amorphous matrix composites WU Xiao-feng(武晓峰), ZHAO Wei(赵 威), MENG Li-kai(孟力凯) Faculty of Materials and Chemical Engineering, Liaoning University... reinforced Dy-Fe-Al amorphous matrix composites with a diameter of 3 mm were designed and fabricated by conventional Cu-mold casting method. XRD and SEM analyses were conducted to investigate......
Tribological Behavior of Nano-ZrO2 Reinforced PTFE-PPS Composites曹文翰1,龚俊1,QI Yuan1,YANG Dongya1,GAO Gui2,王宏刚2,REN Junfang2,CHEN Shengsheng21. School of Mechanical and Electrical Engineering,Lanzhou... obtained when the particle content of nano-ZrO2 was 10 vol%, the anti-wear performance of composite is 195 times better than that of the unfilled PTFE-PPS composite. Under different conditions......
>文章编号:1004-0609(2009)08-1473-07 含TiN中间层IrO2-Ta2O5涂层钛阳极的电催化性能 叶张军,甘永平,张文魁,黄 辉,陶新永 (浙江工业大学 化学工程与材料学院,杭州 310032) 摘 要:采用钛片在氮气中700 ℃退火的方法,在钛片表面原位生成TiN薄膜,并以此为基体采用热分解法制备IrO2-Ta2O5涂层钛阳极.研究含TiN中间层IrO2-Ta2O5涂层钛阳极及传统IrO2-Ta2O5涂层钛阳极的开路电位,析氧行为,循环伏安和电化学阻抗等性能.结果表明:含TiN中间层IrO2-Ta2O5涂层钛阳极具有非连续状裂纹结构,且表面生长出大量IrO2纳米晶体,其电催化析氧性能优于传统IrO2-Ta2O5涂层钛阳极的电催化析氧性能;涂层烧结温度越低,电化学性能越好;当烧结温度低于500 ℃时,TiN中间层可以显著......
particle reinforced steel matrix composites have intensified. Generally, there are two ways to obtain a high mass fraction of WC particles in steel: through casting method[5-7] or via powder metallurgy(P... resistance The WC particles reinforced steel matrix composite systems are characterized by interfacial reactions between WC particle and matrix. It is important to control the thickness of reaction layer......
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tightness and grain strengthening. Key words: particle reinforced aluminum matrix composites; squeeze casting; microstructure; tensile strength; dry sliding property 铝基复合材料因其独特的优越性能备受材料研究者的关注..., Zhenjiang 212013, China) Abstract: The A356-Zr(CO3)2 components were used to synthesize in-situ Al3Zr, Al2O3 particulates reinforced aluminum matrix composites, which were cast by conventional permanent......
文章编号:1004-0609(2011)04-0804-06 基体梯度结构对TiN涂层硬质合金力学和切削性能的影响 王社权1, 2,陈康华1,徐银超1,祝昌军1,谢灿强1,陈响明2 (1. 中南大学 粉末冶金国家重点实验室,长沙 410083; 2. 株洲钻石切削刀具股份有限公司,株洲 412000) 摘 要:研究基体梯度结构对TiN涂层硬质合金力学和切削性能的影响;采用阴极弧蒸发涂层工艺分别在均质和梯度硬质合金基体上制备TiN涂层;运用金相观察,扫描电镜分析,三点抗弯强度测试,显微硬度测试和切削性能测试,研究基体梯度结构对TiN涂层硬质合金组织结构,力学性能和切削性能的影响.结果表明:基体结构梯度化后,TiN涂层表面形貌由平整状变为网状结构,显微硬度提高19%,抗弯强度提高6.1%;基体结构梯度化后,涂层硬质合金的结构发生变化,力学性能得到提高,涂层刀片的抗冲击性......