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析. 图1 87%周向轧制钽板的预回复及再结晶退火工艺制度图 Fig. 1 Sketch maps of pre-recovery and recrystallization annealing processes for clock-rolled tantalum plate of 87% thickness reduction 利用TEM表征轧制及预回复样品的亚结构... of 87% clock-rolled tantalum plate after pre-recovery at different temperatures 图3 {111}和{100}取向晶粒经不同温度预回复后的线扫描相邻点之间的取向差(p-p)分布图 Fig. 3 Misorientation profiles of point-to-point (p-p......
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in a deterioration of the stress rupture properties of alloys at elevated temperature. Although tantalum is a beneficial element for increasing the high temperature strength of superalloys, its content... of Ni-10Co-1.5Cr-16W-2Mo-1Nb-5Al-4Ta possesses the optimum properties. Key words: Ni-base superalloys; α phase; tantalum; M6C carbides; microstructure; phase transformations 低Cr高W铸造镍基高温合金是一种低成本高承温能力合金, 其等轴晶状态下1100......
">To investigate the influence of tantalum content on high-temperature mechanical properties of low-carbon reduced activation ferritic/martensitic(RAFM) steels, RAFM steels containing different tantalum... of 180 and 220 MPa. It was found that 0.073% tantalum addition results in the increase in amount of stable carbonitrides(MX), and the creep rupture time of the steel under 180 MPa is obviously increased......
%和9.23%,可直接作为钽铌湿法冶炼工业原料.关键词:钨渣；钽；铌；富集；酸法Enrichment of tantalum and niobium from tungsten residue by hydrochloric acid methodYANG Xiu-li1, WANG Xiao-hui2, XIANG Shi-biao3, SUN Qing3, WEI Chang1, ZHENG...-manganese oxides, silicate and quartz. Tantalum and niobium are mainly encapsulated in silicon-manganese phases. Based on this analysis, a new method was proposed for tantalum and niobium enrichment......
, vanadium and tantalum on the microstructures in CLAM (China Low Activation Martensitic) steel after irradiation respectively, the microstructures of Fe-M (M= V ,W, Ta) model alloys were investigated... due to tantalum segregation near voids. It indicates that tantalum plays an important role in the improved irradiation resistance of CLAM steel.关键词:......
and H2O system were investigated. A L9(34) orthogonal design was used to study the effects of reaction temperature, mass ratio of KOH to Ta2O5, and reaction time on the dissolution rate of tantalum. It was found that the effect of reaction temperature on the dissolution rate of tantalum was much greater than that of the other factors. The results of factorial experiments showed that Ta2O5 was mainly......
In Reserves of 12 Mineral Species China is Richest in the WorldY.Y.H.摘 要:<正> Ministry of Geology and Mineral Reserves resently declared that verified reserves of 12 min-eral species are the foremost in the world.These minerals are rare-earths, gypsum, titanium, tantalum, tungsten, bentonite,tin, mirabilite, barite, magnesite, antimony, graphite.In......
Energy Band-gap Calculation of d-Ta2O5 Using sX-LDA and B3LYP Methods张光磊1,GUO Xiaoyu2,QIN Guoqiang2,FU Hua21. Hebei Provincial Key Laboratory of Traffic Engineering Materials, Shijiazhuang Tiedao University2. School of Materials Science and Engineering, Shijiazhuang Tiedao University摘 要:The energy band-gap and related factors of tantalum pentoxide......
