共搜索到3353条信息,每页显示10条信息,共336页。用时:0小时0分0秒500毫秒
Chemical Thermodynamic Analysis of Silicon Doping in MOCVD of GaAs System任红文,蒋民华,刘立强,黄柏标摘 要:<正> With chemical thermodynamic method,enthalpies,entropies and heat capacities of(SiH3)nAsH3-n(1≤n≤3),(CH3)mSiH4-m(1≤m≤4)and their radicals were calculated.Homogeneous reactions equilibrium of 65gas phase species in SiH4(or Si2H6)doped MOCVD GaAs by TMG......
temperature and chemical reactions were numerically simulated using computational fluid dynamics(CFD) technique.The results show that the flow rate variation at the fuel inlet does not largely affect......
between chemical reactions occurring on the scheelite surface and molecular structures of the reagents were analyzed.The results show that BHA and carboxylic acid collectors interact with scheelite......
transformation ofα-Ti to β-Ti of the substrate significantly influences the stability of NiCrAlY coating/TC4 substrate system.NiCrAlY coating elements are mainly consumed by interfacial reactions below......
University摘 要:A new Eu-based microwave dielectric ceramic,Eu(Mg0.5Ti0.5)O3(EMT for short), was prepared through conventional solid-state reactions. The EMT......
that anodic reactions are controlled alternately by the diffusion mostly,then both charge transfer and diffusion and finally charge transfer mainly with the increment of PH2 S.The corrosive products......
growing research fields. In this review, we highlight various types of metal catalysts that possess great potential in several catalytic reactions. The major focus has been on metal oxides, nanoporous......
/dehydrogenation reactions could be taken place between Mg and MgH2. The ball milled Mg3La alloy exhibited bet- ter hydriding kinetics than that of the as-cast Mg3La alloy at room temperature......
. The ternary La-Mg-Ni phase with a PuNi3 structure had the composition of La1.8Mg1.2Ni9 and La2MgNi9, for alloys laser sintered at 1000 and 1400 W, respectively. Owing to further reactions between LaNi5......
Wettability and interfacial behaviour of NdF3-LiF-Nd2O3 on TiB2-based ceramics罗旭东,王兆文,胡宪伟,高炳亮,石忠宁,涂赣峰摘 要:Wettability of TiB2-based ceramics by NdF3-LiF-Nd2O3 melt was studied using sessile drop technique in this paper. Wetting experiment was carried out under inert atmosphere at 1050 °C. Chemical reactions which occurred on the solid-liquid interface......