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nitride particles coated by titanium nitride (TiN/cBN) as well as diamond particles coated by titanium carbide (TiC/diamond) were prepared by Ti molten salt deposition followed by heat-treatment... beam (FIB). The results show that the cBN and the diamond particles are coated by nano-sized Ti layers. By heat-treatment of the Ti/cBN and TiC/diamond coated particles under hydrogen atmosphere......
1. 上海理工大学 机械工程学院,上海 200093； 2. 上海理工大学 材料科学与工程学院,上海 200093 摘 要:为了研究纳米结构金属Ti的纳米力学性能,在偏压为0~140 V的范围内,采用磁控溅射方法制备纯钛薄膜.并采用X射线衍射仪(XRD),扫描电子显微镜(SEM)和高分辨率透射电子显微镜(HRTEM)表征钛薄膜的显微组织.结果表明:钛薄膜呈现非晶与纳米晶的混合结构,且...Trans. Nonferrous Met. Soc. China 24(2014) 2870-2876 Effect of bias voltage on microstructure and nanomechanical properties of Ti films Ying-long LIU1, Fang LIU2, Qian WU2, Ai-ying CHEN2, Xiang LI2......
, LEMMER O, JURGENS A, ESSER S, EBBERINK J. Industrial application of crystalline diamond-coated tools[J]. Surface and Coatings Technology, 1991, 48(3): 253-260. [2] MURAKAWA M, TAKAEUCHI S. Mechanical..., 1994, 68/69: 359-368. [5] KANDA K, TAKELANA S, YOSHIDA S, WATANABE R, TAKANO S, ANDO H. Application of diamond-coated cutting tools[J]. Surface and Coatings Technology, 1995, 73(1/2): 115-120. [6......
; 文献标志码:A Effect of friction and corrosion resistance of titanium alloy coated with nano/micro diamond WANG Jing-qing1, LONG Hang-yu1, XIE You-neng1... NCD,MCD和TC4的阳极极化曲线图 Fig. 7 Anodic polarization curves of different diamond films and uncoated substrate in artificial saliva at 37 ℃ 另外,基体宏观结构对材料的耐腐蚀性能也有很大的影响,宏观结构的差异会影响材料的表面状态.钛合金具有良好的耐蚀性是......
Influence of Heat Treatment Temperature on Microstructure and Bonding of TiO2 Film Coated on Diamond Particles Surface刘小磐1,2,KONG Weibing1,XIAO Haiyan2,WAN Long1,HU Weida4,王伟5,6,71. School... were coated on the surface of diamond particles using a sol-gel method. The effects of heat treatment temperature on the morphology, phase composition and chemical bond of diamond particles coated......
Ti在铁素体中的平衡固溶度亓海全1,2,雍岐龙2,雍兮3(1.云南省昆明市昆明理工大学材料与冶金工程学院2.北京市钢铁研究总院结构材料研究所3.中科院计算所,北京 100190)摘 要:基于Thermo-Calc和相关文献测试数据所推导出的Fe2Ti在铁素体中的平衡固溶度公式,并结合Fe2Ti的形成自由能,推导出了钛在铁素体中的平衡固溶度公式.这对于钛的碳化物,氮化物及碳氮化物等第二相颗粒在铁基体中的固溶度积求算以及相关的固溶析出行为等方面的研究具有重要的作用.关键词:Ti； 平衡固溶度； 铁素体......
mechanisms of Ti-C:H/TiC/TiCN/TiN/Ti coatings when sliding against steel, bronze and aluminum alloy rods [J]. J Mater Sci, 2001, 36: 189-199. [17] SINGH V, JIANG J C, MELETIS E I. Cr-diamond like carbon... Trans. Nonferrous Met. Soc. China 22(2012) 1372-1380 Influence of Ti target current on microstructure and properties of Ti-doped graphite-like carbon films WANG Yong-xin1, 2, WANG Li-ping1, XUE......
Trans. Nonferrous Met. Soc. China 22(2012) s769-s774 Wear characteristics of V shape diamond tool for micro prism pattern with Al alloys Eun-Suk PARK1, 2, Tae-Jin JE1, 2, Hwan-Jin CHOI1, 2, Eun-Chae...-precision machining process using a single crystal diamond tool has been mainly used for machining molds of optical components. Since the micro patterns of various shapes having excellent surface......
粒表面形成厚度为5~10 nm的隔离层,阻碍了加热过程中Ti颗粒表面的原子扩散,从而阻止加热脱氢过程中粉末颗粒的长大. 关键词:超细钛粉；氢化脱氢；阻止剂；NaCl；颗粒长大 中图分类号:TF123.7 文献标志码:A Fabrication and properties of ultrafine Ti powder by NaCl coated...-coated Ti powder dehydrogenated at 530 ℃; (c) High- resolution image and fast Fourier transform of (b); (d) Leached Ti powder 3 结论 1) 海绵钛经渗氢后形成的TiH2易于机械破碎,随球磨时间的增加其粒径急剧下降,而后趋于平缓.通过实验以及对效益及安全性的综合考虑......
料的电导率[15-17].目前,还未见醇盐水解-氨气氮化法制备TiN包覆SiC复合粉末的研究报道.本文作者将重点研究醇盐水解-氨气氮化反应的机理和影响TiN包覆层的形貌,物相组成的关键因素,并对包覆粉末的热稳定性进行评价. 1 实验 实验选用了粒径为25 μm的SiC粉末.所用的化学试剂有钛酸丁酯(Ti(O-i-C4H9)4),钛酸四异丙酯(Ti(O-i-C3H7)4),甲氧基乙醇,无水异丙醇(IPA),氨水和去离子水.醇盐水解-氨气氮化法制备TiN包覆SiC复合粉末的工艺流程主要分为两个步骤:第一步是采用醇盐水解法在SiC表面包覆TiO2；第二步是将TiO2包覆SiC粉末在氨气中氮化,从而得到TiN包覆SiC复合粉末. 1.1 醇盐水解包覆TiO2 醇盐水解包覆TiO2的原理是以钛醇盐Ti(OR)4 (R为-C3H7和-C4H9)为前躯体,将钛醇盐溶于溶剂中形成均......
