材料期刊网

Effect of Ga on Magnetic and Microstructural Properties of Nd-Fe-Co-B Alloys

PAN Shuming LI Guobao PING Jueyun MA Ruzhang ** General Research Institute for Non-ferrous Metals , CNNC , Beijing , 100088 , China.University of Science and Technology , Beijing , 100083 , China. To whom correspondence should be addressed.

材料科学技术（英）

关键词: Ga addition , null , null , null

Synthesis of CDMO from LiOH and EMD and the Performances of Li/CDMO Rechargeable Batteries

Renmin LIU Guoliang WU Jiangshan LUO General Research Institute of Nonferrous Metals , Beijing , 100088 , ChinaJohn H.Kennedy Zhengming ZHANG Department of Chemistry , University of California , Santa Barbara , USAQin LIN University of Science and Technology Beijing

材料科学技术（英）

The synthesis of CDMO from LiOH and EMD has been investigated by thermogravimetry and pow- der X-ray diffraction analysis.The results showed that it took place from below 100 to 400℃.When the proportion of Li:Mn in the starting mixture was 3:7,the measured weight loss during this process was 7.40% for heat-treated EMD and 8.33% for non-heat-treated EMD.Based on these data and X-ray diffraction results the obtained product would be 3LiMn204 - MnO2.This material was es- sentially amorphous.It can insert 4.7 Li per 3LiMn_2O_4·MnO_2,leading to a capacity of 170- 200 mAh/g and demonstrated reasonable discharge and recharge cycle performance for both test cells and practical batteries.

关键词: CDMO , null

Action of New Rare Earth Additions in Cemented Carbide

Chenguang LIN General Research Institute for Non-ferrous Metals , Beijing , 100088 , China

材料科学技术（英）

The existence form and distribution of new rare earth additions in WC-Co,WC-TiC-Co.Cemented carbide and its actions of purification,modificaiton,solid solution strengthening and restraining phase transformation have been investigated.The results have been used to elucidate property im- provement of the alloys.

关键词: cemented carbide , null , null