共搜索到724条信息，每页显示10条信息，共73页。用时：0小时0分0秒425毫秒
DL-EPR法评价2205双相不锈钢晶间腐蚀敏感性徐菊良1,邓博1,孙涛1,李劲1,蒋益明1(1.上海市复旦大学材料科学系)摘 要:利用Thermo-Calc软件并结合金相显微镜,定性研究了2205双相不锈钢在800℃下敏化不同时间后的微观组织演变过程.通过研究扫描速率,介质成分,介质温度和试样表面状态优化了双环电化学动电位再活化法(DL-EPR),并用该优化方法研究了2205双相不锈钢晶间腐蚀敏感性.结果表明:DL-EPR法能定量评价σ相对2205双相不锈钢晶间腐蚀敏感性的影响,随敏化时间延长,σ相含量增多,......
......
; 文献标识码: A Effect of heat treatment on stress corrosion cracking susceptibility of aluminum alloy 2519 ZHANG Xin... cracking susceptibility 2519铝合金是20世纪80年代美国开发的一种高强, 高韧铝合金, 主要用于飞机蒙皮, 火箭, 舰船等的结构件和两栖装甲突击车, 空投空降车等的装甲材料, 美国已将该合金用作先进的两栖突击车(AAAV)的装甲材料[1-4]. 2519与其它2×××系合金相比, 该合金有比较优良的耐蚀性能. 关于该合金耐蚀性能的研究, 文献[5]报道......
magnetite were studied. Combined with the anslysis of particle size, degree of mineral liberation and specific susceptibility, the mechanism of HPGR in the separation process of V-Ti magnetite was studied...; parallel separation of Fe and Ti; liberation degree; specific susceptibility 高压辊磨机实施的是准静压料层粉碎,当料层受挤压时,矿石本身作为传压介质,受到巨大压力导致颗粒破碎或变形,其粉碎产品具有微裂纹多,细粒级质量分数高和单位破碎能耗低等特点[1-2],符合"多碎少磨"技术的发展趋势,已经广泛应用于矿石粉碎领域.攀西地区是我国......
高炉喷吹煤粉质量分布和组分特性关系的研究焦红光1,刘鹏1,陈清如1(1.河南省焦作市河南理工大学材料科学与工程学院)摘 要:为了解磨制高炉喷吹煤粉的质量分布和组分特性间的关系,以洛阳某矿生产的原煤为样品磨矿制粉,采用X射线衍射仪和振动样品磁强计分别考察了不同粒度级煤粉的质量状况(灰分,硫分和比磁化率等指标),进而研究了不同粒度级煤粉的组分特性.发现磨制高炉喷吹煤粉的灰分,硫分和比磁化率均随煤粉颗粒粒径减小而递减;而这种规律是由于煤系矿物质同煤基质之间可磨性和磁性的差异造成的,在此基础上结合煤粉制备系统提出了回粉......
ANOMALOUS EFFECT OF PRESSURE ON THE CURIE TEMPERATURE IN MECHANICALLY ALLOYED Fe-Ni INVAR F. Ono1,X.H. Wei2 (1.Department of Physics, Okayama University, 3-1-1 Tsushima-Naka,Okayama 700-8530, Japan;2.Department of Electronic Science, Huizhou University, Huizhou 516007, China) Abstract:Measurements of magnetic susceptibility in mechanically alloyed Fe-Ni Invar alloys were taken under pressures......
structure and magnetic susceptibility were studied. High-temperature susceptibility could be well fitted by Curie-Weiss law for all Sr-doped samples. Weiss constant and effective magnetic moment were... in flowing oxygen could cause transition of the spin state of Co4+ ions from the HS state to IS state. Key words:La1-xSrxCoO3; oxygen annealing; magnetic susceptibility; spin state; rare earths; [全文内容正在添加中] ......
, Nd, Sm, Eu, Gd, Tb, Dy, Yb) were synthesized for the first time. Their structures were characterized by IR, UV, ESR, XPS, XRD and magnetic susceptibility. Their redox properties were studied by means......
is coordinated by oxygen and nitrogen atoms of the ligand (L) and the oxygen atoms of the nitrate. The amide-oxygen atoms of L coordinate to the Ln ions in its keto-form. The magnetic susceptibility......
Mg-6.5Zn-xY-0.5Zr合金热裂敏感性 Fig. 8 Hot tearing susceptibility of Mg-6.5Zn-xY-0.5Zr alloys 图9所示为通过双电偶方法测试得到的枝晶搭接温度.由图9可见,Mg-6.5Zn-2Y-0.5Zr的枝晶搭接温度最高(637.52 ℃),Mg-6.5Zn-6Y-0.5Zr的枝晶搭接温度最低(617.79... tearing susceptibility of Mg-7Al-2Si casting alloys[J]. Special Casting & Nonferrous Alloys, 2013, 33(2): 91-95. [4] QIU Ke-qiang, TAO Si-wei, RE Yan, YOU Jun-hua, REN Ying-lei, LI Rong-de. Effect......
