材料期刊网

氮、铌添加对304奥氏体不锈钢电化学腐蚀行为的影响

孙涛 , 邓博 , 徐菊良 , 李劲 , 蒋益明

中国腐蚀与防护学报

采用极化曲线和电化学动电位再活化技术（EPR）研究了不同含量氮（N）、铌（Nb）元素的添加对304奥氏体不锈钢的耐点蚀和耐晶间腐蚀性能的影响。结果表明：N元素的添加可以显著提高材料的耐点蚀性能，但对于晶间腐蚀性能的影响却有不同的机制。少量的N会降低材料的耐晶间腐蚀性能，但含量增加到0.2%时，却可以...

关键词: 304奥氏体不锈钢 , nitrogen , niobium , pitting corrosion , intergranular corrosion

氮在灰铸铁溶液中溶解度的热力学研究

翟启杰 , 胡汉起

金属学报

本文运用热力学理论对氮在灰铸铁溶液中的溶解度进行了理论研究,提出了铸造生产条件下灰铸铁溶液中氮的溶解度与温度和灰铸铁成分的关系式,并采用三种不同成分的灰铸铁材料对此做了验证。

关键词: 灰铸铁 , nitrogen , solubility

EFFECT OF NITROGEN ON MATRIX STRUCTURE OF GRAY CAST IRON

ZHAI Qijie HU Hanqi University of Science and Technology Beijing , China associate professor , Faculty of Foundry , University of Science and Technology Beijing , Beijing 100083 , China

金属学报(英文版)

Effect of nitrogen on matrix structure of 3 different varieties of gray cast iron,i.e., sub-eutectic Fe-C-Si,near-eutectic Fe-C-Si and Fe-C-Si-Mn,has been investigated. The eutectie colony structure of gray cast iron may be refined,the pearlite content increased and the micro-hardness of pearlite an...

关键词: nitrogen , null , null , null , null

LOW-CYCLE FATIGUE BEHAVIOR OF A NEW TYPE OF STAINLESS-STEEL

Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing

Specimens of an Fe-Cr-Mn-N dual-phase stainless steel were solution treated at 1050 and 1250-degrees-C, yielding grain sizes of 10 and 32-mu-m respectively. Low cycle fatigue tests at constant total strain amplitude ranging from 4 x 10(-3) to 1.2 x 10(-2) were carried out at room temperature in air....

关键词: nitrogen

NITROGEN IN SUPERALLOYS

A. Mitchell

金属学报(英文版)

Nitrogen has a significant effect on superalloy mechanical properties, almost without exception in a negative sense. All of the alloys contain strong nitride formers (Ti, V, Nb, Hf, Ta) and will, because of the nitride-former concentration, produce nitride precipitates not only during solidification...

关键词: nitrogen , null , null

体心立方金属中位错与间隙原子相互作用的回顾--机械波谱术研究

金属学报 doi:10.3321/j.issn:0412-1961.2003.11.006

根据有关术语、实验结果和理论处理方法的现有数据,对冷加工峰,200,220或250℃峰,Snoek-Koster(SK)峰,以及Snoek-Ke-Koster(SKK)峰进行了评估.并特别强调了葛庭燧教授(Ke)为理解冷加工峰所作的贡献.同时,对由(1)Schoeck,(2)Seeger,(3)王业...

关键词: Snoek-Koster峰 , 冷加工峰 , Snoek弛豫 , Cottrell气团 , 葛庭燧 , 内耗 , 机械波谱学 , 位错 , 固溶体 , 铁 , 碳 , 氮

脉冲熔融-红外吸收热导法测定钢铁材料中氧氮和氢

于燕鹏 , 胡少成 , 马红权 , 吴振宁 , 黄小峰 , 胡学强 , 王蓬

冶金分析 doi:10.13228/j.issn.1000-7571.2014.10.006

在脉冲加热红外吸收热导法测定钢铁材料中氧氮系列研究的基础上,通过对仪器分析气路的快速转换,实现了单台仪器快速测定氧氮和氢3种气体元素.实验主要对测氢的脉冲加热条件、助熔剂和坩埚的影响等进行考察,确定分析功率为2 300 W、加1片锡片助熔、使用套坩埚为氢测定的最佳分析条件.通过对氧、氮和氢标准样品的...

关键词: 脉冲加热 , 熔融 , 红外吸收法 , 热导法 , 钢铁 , 氧 , 氮 , 氢

纳米N/TiO2复合醇酸树脂涂层的防护性能研究

高再玲 , 赵霞 , 刘栓

电镀与涂饰

通过溶胶-凝胶法制备了N掺杂TiO2纳米颗粒(N/TiO2),采用X射线衍射仪和透射电镜对其进行了表征,并与醇酸树脂混合制成纳米N/TiO2复合醇酸树脂涂层.采用盐雾试验、动电位极化曲线和电化学交流阻抗技术研究了纯醇酸树脂涂层和纳米N/TiO2复合醇酸树脂涂层在海水环境中对碳钢的防护性能.结果表明:...

关键词: 醇酸树脂 , 二氧化钛 , 氮 , 掺杂 , 溶胶-凝胶法 , 碳钢 , 海水 , 腐蚀防护

QUANTITATIVE ANALYSIS OF NITROGEN IN COMPOUND TiN WITH ELECTRON MICROPROBE

SHANG Yuhua XU Leying Institute of Metal Research , Academia Sinica , Shenyang , China SHANG Yuhua Senior Engineer , Institute of Metal Research , Academia Sinica , Shenyang 110015 , China

金属学报(英文版)

Deducting interference method was applied to determine the concentration of nitrogen in the presence of Ti.This procedure is available in treating the interference of same order diffraction in EPMA....

关键词: interference , null , null , null

SOLUBILITY OF NITROGEN IN MOLTEN GRAY CAST IRON

ZHAI Qijie , HU Hanqi , University of Science and Technology Beijing , Beijing , China HU Hanqi , Professor , Faculty of Foundry , University of Science and Technology Beijing , Beijing 100083 , China

金属学报(英文版)

The expressions of the dependence of nitrogen solubility in molten gray cast iron on the temperature and composition of the melt were proposed under the condition of foundry practice. Three gray cast iron specimens with different compositions were examined in good agreement with the derived expressi...

关键词: gray cast iron , null , null