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,晶界处具有连续S相的2号合金比1号合金的再结晶晶粒数目更多,晶粒更加细小(见图8(b)). 图12 合金中第二相粒子对其变形特征的影响机理 Fig. 12 Schematic diagrams of effects of second phase particles on deformation mechanisms of alloy 3.2 晶内的板条状S... deformation[J]. Materials for Mechanical Engineering, 2013, 35(11): 22-27. [11] NIKULIN I, KIPELOVA A, MALOPHEYEV S, KAIBYSHEV R. Effect of second phase particles on grain refinement during equal-channel......
XRD谱进行分析.研究结果表明:悬浮态低温焙烧可实现高硫铝土矿的快速脱硫,升高焙烧温度有利于提高脱硫率;硫化物型硫的残留量降至0.08%(质量分数)之后,脱硫过程趋于完成;FeS2脱硫反应伴随着金属氧化物吸收SO2的反应,细颗粒对SO2具有更强的吸收能力;高硫铝土矿粉料在悬浮炉内的有效停留时间约2 s,焙烧炉内温度控制在610~640 ℃,焙烧矿中硫化物型硫质量分数可以降低到0.16%以下.低温闪...: high-sulfur bauxite; suspended roasting; desulfurization rate; sulfur phase 我国铝土矿储量中高硫型铝土矿约占资源储量的11%,约5.6亿t[1].高硫铝土矿是指硫质量分数大于0.7%的铝土矿,其中硫主要以黄铁矿(FeS2)形式存在.黄铁矿在铝酸钠溶液中会转化成为SO32-,S2O32-和S22-等形态,不仅造成Na2O的损失......
精炼钢渣硫赋存形式及含硫相形成机理何环宇1,倪红卫1,甘万贵2,林路1(1.湖北省武汉市武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室2.武钢冶金渣公司,湖北武汉 430082)摘 要:采用微观分析和热力学分析手段对精炼钢渣物相析出过程及硫赋存形式和含硫相形成机理进行研究,在快速冷却条件下精炼钢渣物相析出充分,物相析出顺序与其相平衡温度有关,低熔点的铝酸钙以基体相形式析出,渣中物相析出机理符合CaO-SiO2-Al2O3伪三元渣系相图研究结果,在物相析出过程中硫在基体相中富集,并在各物相交界处与其它元素形成低熔点的混合渣相,在含硫渣相中,静电势较低的S2-与Ca2+形成CaS离子对,并与铝酸钙基体相发生置换反应,最终以铝酸钙硫化物的形式赋存于精炼钢渣的低熔点渣相中.关键词:精炼钢渣......
of sulfur nanomaterial by liquid phase precipitation method for Li/S battery YUAN Yan, CHEN Bai-zhen, CHEN Ya (School of Metallurgy and Environment, Central South University, Changsha 410083, China... and low cost to prepare sulfur nanomaterial used in lithium sulfur batteries. Key words: sulfur nanomaterial; Li/S battery; liquid phase precipitation method 便携式电子通信装备和电动汽车的发展,对其所用化学电源的比能量指标提出了越来越高的要求......
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of triclinic phase, S doping has great influence on morphology but little on specific surface area. XPS spectra show that S doping replaces the subsistent O, and S-Fe-O form. The photocatalytic activity...催化活性的影响. 1 实验 1.1 实验试剂 实验试剂如下:甲基橙(C14H14N3O3SNa),偏钒酸铵(NH4VO3),九水硝酸铁(Fe(VO3)3·9H2O),一水柠檬酸(C6H8O7·H2O),氨水(NH3·H2O),稀盐酸(HCl),硫脲(H2NCSNH2)和过氧化氢(H2O2),均为国产分析纯. 1.2 S掺杂FeVO4光催化剂的制备 本研究采用溶胶......
sulfur bauxite is shown in Fig. 1. As shown in Fig. 1, Henan ore A and Guangxi ore A have obvious characteristic diffraction peaks of pyrite crystal at 2θ=33.08° and no other phase of S appears... Sulfur phase and sulfur removal in high sulfur-containing bauxite HU Xiao-lian1, 2, CHEN Wen-mi1, XIE Qiao-ling1 1. School of Metallurgical Science and Engineering, Central South University......
, 54 (2): 287-291. [9] STYLES M J, MARCEAU R K W, BASTOW T J, BRAND H E A, GIBSON M A, HUTCHINSON C R. The competition between metastable and equilibrium S (Al2CuMg) phase during the decomposition... of elongation rate is lower than 1.5%. GPB forms during the room temperature delay, meanwhile, the density of dislocation decreases. The activation energy of S phase, the main strengthening phase......
PHASE TRANSFORMATION BEHAVIOR IN THE SPUTTERDEPOSITED Ti-Pd-Ni THIN FILMS J.S.Wu1,Q.C.Tian1 (1.Key Laboratory of the Ministry of Education for High Temperature Materials and Tests,School... calorimetry (DSC). It was found that the phase transformation temperatures of Ti50.6Pd30Ni19.4 ingot are much higher than those of its thin film. The B19'' and B19 phases coexisted, together with the Ti2Ni......
of S phase in 2E12 aluminum alloy ZHOU Ming-zhe1, YI Dan-qing1, 2, YIN De-yan1, HONG Tian-ran1, HUANG Dao-yuan1 (1. School of Materials Science and Engineering, Central South University... that the transformation of S phase from type Ⅰ to type Ⅱ is promoted by applying electric field. The S phase formation peak in DSC curves under electric field shifts to a lower temperature. The supersaturation degree......