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Al对含钛430不锈钢夹杂物的影响施晓芳1,成国光1,赵沛2(1.北京市北京科技大学 冶金与生态工程学院2.钢铁研究总院,北京 100081)摘 要:在实验室条件下考查了Al含量对含钛430不锈钢的Ti/Al夹杂物的影响,发现随着Al含量增加,夹杂物尺寸增加,并且从含Al高的钢样中观察到了Ti2O3与Al2O3固溶体;通过计算Ti2O3与Al2O3之间的错配度,证明了Ti2O3很容易依附于Al2O3形核,为了防止大颗粒夹杂物的生成,从热力学角度分析了Al对含钛氧化物形成的影响,通过计算Al-Ti-O平衡关系,提出了最佳[Ti]/[Al]. 关键词:430不锈钢； Ti/Al夹杂物； 错配度； [Ti]/[Al]......
Microstructure and Wear Resistance of in situ Formed Duplex Coating Fabricated by Plasma Nitriding Ti Coated 2024 Al AlloyFanyong Zhang,Mufu YanNational Key Laboratory for Precision Hot Processing... coated 2024 Al alloy to improve its surface mechanical property. Ti film with the thickness of 3.0 mm was firstly fabricated by means of magnetron sputtering method. Then, the Ti coated specimen......
:CT20钛合金；电子束焊接；显微组织 中图分类号:TF 804.3 文献标志码:A Electron beam welding process of CT20 Ti alloy ZHAO Bin, YANG Ying-li, ZHAO Heng-zhang, DU Yu, GUO Di-zi (Northwest Institute... α structure is formed. Key words: CT20 Ti alloy; electron beam welding; microstructure CT20钛合金是西北有色金属研究院为航天低温管路构件而设计的一种近α钛合金.该合金在低温下具有比强度高,导热率低,热膨胀系数小,介质相容性好,抗氢脆等特点,可以很好地满足液体燃料储箱和低温管路使用[1-3].目前,发动机低......
Ti的新天地--民用钛的开发与前景朱峰,张杰,李宝成,朱波,朱涛摘 要:本文简述了金属钛在国内外的发展过程,介绍了钛在民用各行业的主要用途及新进展,讨论了民用钛的应用前景.关键词:钛;金属;发展;......
(HA/TiO2) double layers were coated onto Ti scaffolds throughout for orthopaedic applications by sol-gel method. Differential scanning calorimetry (DSC), thermogravimetric analysis (TG) and X-ray.... The HA/TiO2 coated Ti scaffolds displays excellent bone-like apatite forming ability when it is soaked into SBF. Ti scaffolds after HA/TiO2 double coatings can be anticipated as promising implant materials......
种不同形状的增强体 , 即短纤维状TiB晶须和等轴,近似等轴状TiC粒子.TiB与Ti基体界面洁净 , 没有明显的界面反应 , 而TiC与Ti基体界面有非化学配比的TiC过渡层存在.由于增强体承受载荷 , 基体合金晶粒细化以及高密度位错的存在 , 制备钛基复合材料的室温和高温性能有了较大的提高 关键词: 原位合成;钛基复合材料;TiC;TiB;力学性能; 中图分类号..., 树枝状增强体TiC的枝晶被打碎, 成为等轴状或近似等轴状粒子 [8] . 图1 钛基复合材料的X射线衍射图 Fig.1 X-ray diffraction patterns of Ti matrix composites (a) -Parallel section; (b) -Cross section 图2 钛基复合......
钛合金表面反应电火花沉积Ti(CN)涂层研究 郝建军1,周志军2,黄继华1,卜志国2,赵建国2 (1.北京科技大学,北京,100083;2.河北农业大学,河北,保定,071001) 摘要:利用自行研制的反应电火花沉积系统,以石墨为电极,以工业氮气为保护气,在TCA钛合金基体上原位反应合成了Ti(CN)金属基陶瓷复合涂层.利用SEM分析了涂层单沉积点表面形貌和组织结构,利用X射线仪测定了涂层的物相组成,利用XPS分析了涂层表面元素组成,利用SEM和AES分析了涂层断面形貌,结合状态和元素组成;结果表明,涂层表面单沉积点形貌呈不规则的"溅射状",涂层主要由呈球块状晶和枝晶的TiC0.51N0.12相,Ti080V0.20 相和C相组成且晶块平均尺寸为626nm,涂层与基体的结合致密,呈冶金结合. 关键词:反应电火花沉积; Ti(CN)金属基陶瓷; 钛合金; [全文内容正在添加中] ......
.结果表明:在Al2O3(0001)基片上制备出具有面心立方结构的FCC相纯钛薄膜,当降低溅射功率或者降低基片温度时,薄膜由面心立方结构转变为六方的α相.继续增加膜层厚度至微米量级时,钛膜也会逐渐由面心立方结构转变为六方的α相.实验证明Ti多晶薄膜的相结构变化与薄膜的内应力,晶格取向和薄膜微结构有关. 关键词:纯钛薄膜；面心立方；相变；磁控溅射；微结构 中图分类号:TG146.4 ... to the internal stress, crystal orientation of films and film microstructure. Key words: Ti films; face-centered cubic; phase transform; sputtering; microstructure 由于钛与钛合金的比强度高,耐蚀性好,广泛应用于航空......
University of Science and Technology, Wuhan, China) 摘要:Using metallo-organatic compound TPT as the source of Ti, H13 mould steels were coated with Ti(CN) films by plasma-assisted chemical vapor...℃,and the films showed excellent anti-oxidation property below 500℃. The lifetime of Ti(CN)-coated augers and dies could be enhanced 7 and 4 times longer than those of untreated respectively. 关键词:PCVD; Ti......
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