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impedes the growth of Ti5Si3 phase, and the formation of TiO2 on surface and on Ti5Si3 phase is also impeded. Key words: TiAl based alloy; niobium silicon alloying; isothermal oxidation behavior... ℃ for 50 h [J]. Intermetallics, 2007, 15: 824-831. [6] LU Wei, CHEN Chun-lin, HE Lian-long, XI Yan-jun, WANG Fu-hui. Effect of niobium on oxidation behavior of TiAl [J]. Journal of Materials Research......
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铌离子注入锆-4合金的高压釜蒸汽腐蚀行为 白新德1,周青山2,田振业2,薛祥义1 (1.清华大学材料科学与工程系,北京,100084;2.西北有色金属研究院,陕西,西安,710016) 摘要:本文研究了铌离子注入对锆-4合金在400℃和500℃,10.3 MPa高压釜中蒸汽腐蚀行为的影响.试验结果表明:铌离子注入能够改善锆-4合金抗400℃和500℃高压蒸汽腐蚀性能,并且,比较而言对500℃蒸汽腐蚀性能提高的程度更为显著.为了理解铌离子注入影响的机理,应用SEM,XRD,XPS等分析手段分析了氧化膜的形貌,相结构,注入元素的价态及组成. 关键词:锆-4合金; 铌离子注入; 蒸汽腐蚀; zircaloy-4; steam corrosion; niobium ion implantation; [全文内容正在添加中] ......
电容器用钽铌粉的研究进展 王峰1,王东辉1,郑欣1,李中奎1,夏明星1 (1.西北有色金属研究院新材料所,西安,710016) 摘要:概括介绍了电容器用钽铌粉的研究进展,介绍了钽粉的3种钠还原制备方法的化学反应机理并进行了比较,同时还介绍了铌粉的制备方法,包括铝热还原法,电解还原法,蒸气还原法,钠还原法和金属热还原法;阐述了钽铌粉中杂质的测定方法以及有关钽铌粉的其它研究进展. 关键词:钽粉; 铌粉; 钠还原法; 杂质; 电容器; tantalum powder; niobium powder; Na-reduced methods; impurity; condensers; [全文内容正在添加中] ......
to avoid cracking in the coating. Key words: niobium alloy; MoSi2; silicide coating; pack cementation; high-temperature oxidation resistance niobium using molten salt......
Trans. Nonferrous Met. Soc. China 31(2021) 1689-1699 Effect of extrusion ratios on hardness, microstructure, and crystal texture anisotropy in pure niobium tubes subjected to hydrostatic extrusion...> components based on EBSD data. Key words: niobium tube; hydrostatic extrusion; microstructure characterization; mechanical properties; texture evolution 1 Introduction Nb tubes are used......
Improving hydrogen storage performance of Li–Mg–N–H system by adding niobium hydrideXi-Lin Zhu1,Shu-Min Han1,2,Xin Zhao1,Yuan Li1,Bao-Zhong Liu2,31. College of Environmental and Chemical Engineering, Yanshan University2. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University3. School of Materials Science and Engineering, Henan Polytechnic University摘 要:
电感耦合等离子体原子发射光谱法测定钽中微量铌的多元光谱拟合干扰校正方法研究徐娟1,郑诗礼2,郭奋1,王晓辉1,张懿2(1.北京市北京化工大学化学工程学院2.中国科学院 过程工程研究所,北京 100190)摘 要:钽样品经氢氟酸消解后,未经基体分离,直接以多元光谱拟合等离子体原子发射光谱法测定消解液中微量铌杂质元素.Nb 269.706 nm分析谱线仅受到Ta基体的部分重叠光谱干扰,扫描光谱图较为简单;Nb 292.781 nm,Nb 309.418 nm和313.079 nm分析谱线均受到OH带和Ta基体的光谱......
FTSR薄板坯连铸连轧生产X60管线钢的开发研究卢军辉1,张成武2,张慧1,朴峰云1,刘家琪1,毕洪志1(1.北京市钢铁研究总院先进钢铁流程及材料国家重点实验室2.通化钢铁集团股份有限责任公司 技术中心,吉林通化 134000)摘 要:基于对铌微合金化技术的系统研究,对X60管线钢的化学成分进行设计,针对薄板坯连铸连轧生产线的特点,对生产过程的各项工艺参数进行控制,得到了87 mm×1 538 mm的薄铸坯;采取控制轧制和控制冷却技术,轧后得到7.9 mm×1 538 mm的板卷.经检测,生产的管线钢组织没有混......
induced ferrite transformation of low carbon manganese (niobium) steel containing ZrC particles under unidirectional compression thermal simulating condition were investigated. The results show... particles is 0.6% which leads to the further refinement of ferrite grains of the tested steel at 900 ℃ and strain rate of 1 s-1. Key words: low carbon manganese niobium steel; ZrC particles......
