共搜索到676条信息，每页显示10条信息，共68页。用时：0小时0分0秒225毫秒
Influence of Zirconium Addition on Magnetic Properties and Temperature Coefficient for Nanocomposite Nd10Fe78.5-xCo5ZrxB6.5 Magnets张士岩,徐晖,谭晓华,倪建森,董远达摘 要:The influence of Zr addition on magnetic properties and temperature coefficient for nanocomposite Nd10Fe78.5-xCo5ZrxB6.5 (x=0~4) bonded magnets was investigated. It was found that the room-temperature......
, Beijing 100088, China) Abstract: The Jominy end quench test was used to evaluate the hardenability of 7050 Al alloys. The room-temperature water and 20%PAG were adopted as quenching media... collected, and the intragranular precipitates at different locations of samples quenched by room-temperature water were observed. The results indicate that the quenched depths of the alloy are 65......
and impact toughness of one quenched and tempered steel with nominal composition of Fe-0.25C-3.0Cr-3.0Mo-0.6Ni-0.1Nb (mass fraction) both at room temperature and at elevated temperatures were investigated... hardening embrittlement, meanwhile, its room-temperature impact energy is much higher than the normal requirement of impact toughness for high strength gun steels. Therefore, the steel is s关键词:......
, Shandong University摘 要:Monoclinic Yb3+-doped KLu(WO4)2 (Yb:KLuW) crystal with large sizes was grown by top-seeded solution growth (TSSG) method. Room-temperature absorption and fluorescence spectra were measured. The ground-state energy-level splitting was 562 cm-1. The absorption cross section, peak emission cross section as well as the minimum inversion......
Nd0.8Pr0.2Co5 alloy with good combination of excellent magnetocaloric and thermal transfer properties are promising for scientific research and practical applications as room-temperature rotating......
loss were both calculated as the functions of temperature.The room-temperature dielectric constant reaches a maximum for a Sr2+-modified PZT-PMN ceramic with an x value of 0.050,which corresponds... for this composition.In addition,the phase transition temperature decreases significantly when the Sr2+concentration increases in the PZT-PMN ceramics.关键词:......
vacancies led to room-temperature ferromagnetism(RTFM) of the CeO2 nanosheets with enhanced magnetic characteristics. Amazingly, the nanosheets exhibited substantially greater antibacterial activity......
stages. By employing a nano-indentation test, the room-temperature fracture toughness of the Ni matrix was found to be higher than that of the interface. The micro-diffusion bonding between Ni......
treatment could significantly improve the room-temperature strength and have little effect on the high-temperature strength of LM28-0.3wt.%Nd alloy. The fracture mechanism is ductile fracture by fracture......
="ChDivSummary">The effect of trace element Er on the microstructure and properties of Al-6Mg-0.7Mn-0.1Cr-0.15Ti alloy was investigated. The results show that the ultimate room-temperature and high-temperature strength sof the alloy have not increased obviously with the addition of erbium, but the uniform elongation of alloys decreases from 9% and 27.5% to 5.5% and 22.5%, respectively. The reason......
