材料期刊网

Wettability of Ni-base Reactive Brazing Alloys on Alumina

Chuangeng WAN(Welding Division , Dept. of Materials Engineering , Jilin University of Technology , Changchun , 130025 , China)Polyvios Kritsalis and Nicolas Eustathopoulos(Lab. de Thermodynamique et Physico-Chimie Metallurgiques , ENSEEG , Institut National Pol

材料科学技术（英文）

The influences of the additions of Ti or / and Si on the wettability of Ni-base alloys on alumina were investigated with the sessile drop method. The interfacial chemical reaction products were analyzed by scanning etectron rnicroscope and microprobe. Their effects on the wettability and the affecting factors for them to be produced were discussed. A new Ni-base braze alloy (NiFeCr10Si15Ti) was designed for brazing alumina with the superior qualities such as low contact angle (less than 25 degrees), high work temperature (near 1073 K) and good resistance to oxidations, etc.

关键词:

THE CHANGING ROLE OF THE NATIONAL LABORATORIES IN MATERIALS RESEARCH

WADSWORTH Jeffrey and FLUSS Michael(Chemistry and Materials Science Directorate , Lawrence Livermore National Laboratory , Livermore , CA 94551)

金属学报(英文版)

The role of the National Laboratories is summarized from the era of post World War II to the present time. The U.S. federal government policy for the National Laboratories and its influence on their materials science infrastructure is reviewed with respect to .determining overall research strategies, various initiatives to interact with industry (especially in recent years),building facilities that serve the nation, and developing leading edge research in the materials sciences. Despite reductions in support for research in the U.S. in recent years, and uncertainties regarding the specific policies for Research &Development (R&D) in the U.S., there are strong roles for materials research at the National Laboratories. These roles will be centered on the abilities of the National Laboratories to field multidisciplinary teams, the use of unique cutting edge facilities, a focus on areas of strength within each of the labs,increased teaming and partnerships, and the selection of motivated research areas. It is hoped that such teaming opportunities will include new alliances with China, in a manner similar, perhaps, to those recently achieved between the U.S. and other countries.

关键词: : U.S. Materials Science. U.S. National Laboratories and Facilities , null

浦项提前完成POL和PGL的改造

上海金属

关键词:

PAR/POL/SOD复合微胶囊的制备及热湿性能研究

尚建丽 , 王思 , 董莉

功能材料

以相变石蜡为核、高吸油性树脂聚丙烯酸酯为内壳,采用原位聚合法制备相变调温微胶囊,在内壳形成后,采用界面聚合法合成以高吸水性树脂聚丙烯酸钠为外壳的复合微胶囊,通过差示扫描法、吸放湿平衡曲线法对复合微胶囊调温、调湿性能进行测试；利用扫描电镜、红外光谱分析仪对复合微胶囊的形貌、结构进行分析.结果表明,双壳复合微胶囊兼有良好的调温调湿性,可作为温湿调节剂配制调温调湿建筑材料.

关键词: 相变材料 , 复合微胶囊 , 高吸油性树脂 , 高吸水性树脂 , 吸放湿平衡曲线

先进钢铁材料技术国家工程研究中心（中联先进钢铁材料技术有限责任公司）

钢铁

先进钢铁材料技术国家工程研究中心 （National Engineering and Research ： Center of Advanced Steel Technology）于2004年6月28日在北京成立。

关键词: 国家工程研究中心 , 材料技术 , 钢铁 , 责任 , Center

先进钢铁材料技术国家工程研究中心（中联先进钢铁材料技术有限责任公司）

钢铁

先进钢铁材料技术国家工程研究中心（National Engineering and Research Centerof Advanced Steel Technology，简称NERCAST）于2004年6月28日在北京成立。由国内13家钢铁生产、技术研发、工程技术集成的优势单位共同出资组建。

关键词: 国家工程研究中心 , 材料技术 , 钢铁生产 , 责任 , 技术集成

先进钢铁材料技术国家工程研究中心（中联先进钢铁材料技术有限责任公司）

钢铁

先进钢铁材料技术国家工程研究中心（National Engineering and Research Center of Advanced Steel Technology，简称NERCAST）于2004年6月28日在北京成立。由国内13家钢铁生产、技术研发、工程技术集成的优势单位共同出资组建。

关键词: 国家工程研究中心 , 材料技术 , 钢铁生产 , 责任 , Center , 技术集成

R & D ACTIVITIES ON AEROSPACE MATERIALS IN KOREA

H.M. Kim(Korea Institute of Machinery and Materials , Korea Manuscript received 26 August 1996)

金属学报(英文版)

This paper briefly reviews research and development programs in Korean aerospace industry,with an emphasis on aircraft materials technology. International collaborations in these areas are outlined and the R & D activities are highlighted against the　background of the national economy.It is shown that the investment from government agencies and large enterprises has led to healthy development of aerospace materials industries in Korea.

关键词: :R & D , null , null , null

表面工程在油料装备维修中的应用前景

姜祎 , 刘明 , 吕耀辉 , 曹常青 , 任守生

材料导报

分析了油料(POL)装备维修保障的现状和进展,讨论了表面工程技术在油料装备维修的应用前景,并分别论述了等离子焊接、纳米电刷镀和高速电弧喷涂3种表面工程技术在油料装备维修工作的技术可行性和应用前景.

关键词: 表面工程 , 油料装备 , 维修

Key R&D activities for development of new types of wrought magnesium alloys in China

Transactions of Nonferrous Metals Society of China

Many researchers in China are actively engaged in the development of new types of wrought magnesium alloys with low cost or with high-performances and novel plastic processing technologies. The research activities are funded primarily through four government-supported programs: the Key Technologies R&D Program of China, the National Basic Research Program of China, the National High-tech R&D Program of China, and the National Natural Science Foundation of China. The key R&D activities for the development of new wrought magnesium alloys in China are reviewed, and typical properties of some new alloys are summarized. More attentions are paid to high-strength wrought magnesium alloys and high-plasticity wrought magnesium alloys. Some novel plastic processing technologies, emerging in recent years, which aim to control deformation texture and to improve plasticity and formability especially at room temperature, are also introduced.

关键词: wrought magnesium alloy;microstructure;properties;alloy designing;plastic deformation;research projects;y-zr alloys;mechanical-properties;mg-4y-4sm-0.5zr alloy;grain-refinement;rare-earth;microstructure;gd;phase;temperature;evolution