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Enhanced oxidation and graphitization resistance of polycrystalline diamond sintered with Ti-coated diamond powdersXiaohua Sha1,2,Wen Yue1,3,Haichao Zhang1,Wenbo Qin1,Dingshun She1,3,Chengbiao... and graphitization resistances of the polycrystalline diamond(PCD), Ti coating was deposited on the diamond powders via magnetic sputtering method, which achieved a uniform Ti C protection barrier in PCD......
文章编号: 1004-0609(2006)05-0805-06 Ti(C, N)基金属陶瓷刀具的切削性能 石增敏1, 郑 勇2, 刘文俊1, 3, 袁 泉1 (1. 三峡大学 机械与材料学院, 宜昌 443002; 2. 南京航空航天大学 材料科学与技术学院, 南京 210016; 3. 华中科技大学 塑性成形模拟及模具技术国家重点实验室, 武汉 470074) 摘 要: 利用真空烧结工艺和表面氮化处理工艺制备纳米复合Ti(C, N)基金属陶瓷可转位刀片和功能梯度可转位刀片, 并对刀片的切削性能进行分析. 结果表明: 切削正火态45#钢, 淬火态45#钢和奥氏体不锈钢时, 与YT15, YG8, TN20相比, 制备的刀具皆表现出较优的切削性能和较高的耐磨性, 表面经氮化处理后, 刀具的表面硬度提高了HRA2.2, 大幅度提高了刀具的抗热冲击......
substrate, the grain size of TiAlCrN coating columnar crystals on the substrate decreased. In this paper, PVD TiAlN coated on Ti(C, N)-based cermets with different grain size were prepared. SEM, XRD... is the normal load (N); t is the sliding time (s); ω is wear rate (mm3/(N·m)). 3 Results and discussion 3.1 Characterization of PVD TiAlN coated Ti (C, N)-based cermets 3.1.1 Ti (C, N)-based cermets......
集也可能受动力过程控制,但Ti的富集通量在生长过程中非恒定,这可能源于其物源多样性；富钴结壳是潜在的海底钛矿资源. 关键词:富钴结壳；钛；富集机理 中图分类号:P 595；P 744.3；P 363.3 文献标识码:A Enrichment and resources potential of titanium in cobalt-rich...水中Ti的一个重要的汇源. 与大洋海底表层沉积物相比,富钴结壳(以下简称结壳,它是一种赋存在海山表面的海洋自生铁锰矿物)中更富集Ti, 其质量分数约为1.21%[6].CRAIG等[7]通过对夏威夷群岛结壳的研究,认为结壳中的Ti随经度的增加而降低,其来源为钛铁矿和钛磁铁矿或者夏威夷附近的富铁-钛风化残积物.HEIN等[8]指出结壳中的Ti主要通过晶格替代进入锰相矿物,且随纬度变化......
guidance for fabricating high-quality diamond coated WC-Co tools with complex geometries. 2 Experimental The WC-6%Co inserts with dimensions of 13 mm×13 mm×4 mm were used as the substrates. Prior... and growth rate. The lower total pressure (1.3 kPa) is beneficial to fabricating nano-diamond films. This study can be extended to fabricate high-quality diamond coated WC-Co tools with complex......
条件. 关键词: 含钛高炉渣;钙钛矿;透辉石; 中图分类号: X757 收稿日期:1999-10-18 基金:国家自然科学基金资助项目 ( 59574 0 2 1 ); Selective enrichment of Ti component in Ti-bearing blast furnace slag... [2] 提出了"冶金废渣中有价组分选择性析出"的概念, 并将其应用于含钛高炉渣中, 即将Ti尽量富集于钙钛矿 (CaO·TiO2) 相中, 并使其充分析出长大, 再采用选矿方法进行分离, 分离出的富钛部分可作为提钛原料, 当剩余尾渣中TiO2含量低于10% 时, 可以大量用于生产矿渣水泥, 以实现含钛高炉渣的综合利用. 本文对含钛高炉渣的工艺矿物学进行了全面分析, 阐明了选......
程进行了研究, 并对3种含不同氧化物组分的Ti基IrO2涂层电极的表面形貌及析氮电催化性能进行了比较. 1 实验 1.1 电极制备及形貌检测 将表面喷砂的尺寸为100mm×10mm×1mm的TA2型纯钛板经碱洗除油及水洗后, 再在沸腾的草酸溶液中酸刻蚀3h, 用去离子水冲洗干净并经过热风吹干. 采用传统的热分解法制备氧化物涂层. 以水合三氯化钌, 氯铱酸, 钛酸四丁脂...文章编号: 1004-0609(2005)01-0084-05 氨络合物体系中Ti基IrO2涂层阳极的析氮过程 郑国渠, 郑利峰, 曹华珍, 张九渊 (浙江工业大学 材料科学与工程研究所, 杭州 310014) 摘 要: 采用线性扫描技术研究了氯盐氨络合物体系中Ti基IrO2涂层阳极的析氮过程, 对3种含有不同氧化物涂层电极的析氮电催化性能进行了比较, 并结合扫描电镜(SEM......
peroxodisulphate. The electrochemical characteristics of boron-doped diamond electrodes were investigated in comparison with active coating Ti substrate anode (ACT). The experimental results show... efficiency) were investigated under different cell voltages. The removal rate of COD on boron-doped diamond electrodes was compared with that on active coating Ti (ACT) electrodes. In this work, ACT......
stable BaTiO3-based ceramics [J]. Materials Letters, 2002, 57: 1-5. 氧化锑掺杂贫Ti钛酸锶钡陶瓷的介电性能及缺陷行为 张 晨,凌志新,简 刚,陈方旭 江苏科技大学 江苏省先进焊接技术重点实验室,镇江 212003 摘 要:采用固相法制备Sb2O3掺杂的贫Ti钛酸锶钡陶瓷,通过SEM,XRD和LCR测试系统研究其显微结...Trans. Nonferrous Met. Soc. China 27(2017) 2656-2662 Dielectric properties and point defect behavior of antimony oxide doped Ti deficient barium strontium titanate ceramics Chen ZHANG, Zhi-xin LING......
and composition graded layer after laser treatment. In this case, the complex cladding process can be described as shown in Fig.7. First, a thick Ti+TiC powder layer is pre-coated onto the TC4 alloy... Surface modification of TC4 Ti alloy by laser cladding with TiC+Ti powders ZHANG Ke-min(张可敏)1, ZOU Jian-xin(邹建新)2, LI Jun(李 军)1, YU Zhi-shui(于治水)1, WANG Hui-ping(王慧萍)1 1. School of Materials......
