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Preparation and Properties of Orthogonal Piezoelectric Composite Materials Chen Chun1,Shen Yi2,Liu Jun1,Lu Ying2,Zhang Xingguo1 (1.School of Materials Science and Engineering, Jiangsu University... of the piezoelectric strain constant d33 ( -681 PC/N) and high value of-d33/d31 (2.65). Orthogonal piezoelectric composite materials was designed and prepared by PZT, DAD- 40 electric conductive adhesive......
钒钛铁精矿内配碳球团的高温快速还原刘松利1,2,白晨光1,胡途2,吕学伟2,邱贵宝2(1.重庆市重庆大学材料科学与工程学院2.四川省攀枝花市攀枝花学院 材料工程学院)摘 要:钒钛铁精矿是一种铁,钒,钛等多元素共生的复合矿,具有很高的综合利用价值.采用实验室转底炉对钒钛铁精矿内配碳球团进行了高温快速还原的可行性研究,通过正交试验考察了配碳比,还原温度,添加剂,还原时间等参数对球团金属化率的影响.结果表明:配碳比1.5∶1,还原温度1 350℃,添加剂2%碳酸钠,还原时间20min时金属化率可以达到88%以上.对原......
parameters theory and nine sets of different structural parameters turned from orthogonal experiments, the laboratory ore drawing experiment and computer ore drawing numerical simulation experiment... caving; structural parameters; orthogonal experiment method; multi cell third dimension ore drawing model; regression analysis 采矿方法结构参数不仅直接影响到开拓,采准以及回采准备的工程量,而且相应影响到投资,成本和采矿效益等.此外,对于像无底柱分段崩落法这类采矿方法,一般......
)on drawing 20/316L composite tube were investigated by using orthogonal experiment. The optimal drawing parameters (α=11?, r=3 mm, l=7 mm, μ=0.05, v=0.03 m/s, d=17.3 mm) under the maximum residual contact... studied by using these optimal parameters, and the results confirmed the effectiveness of the orthogonal experiment on optimization of drawing composite tube parameters. Compared with the non-optimized......
验组合和仿真结果见表3.横波纯度定义为横波分量与纵波分量比值r/z.螺旋线圈EMAT在产生横波的同时也会形成纵波,在实际检测中,纵波及其模式转换波的存在可能干扰缺陷定量的可靠性和准确性,甚至可能导致缺陷的误判.因此,横波纯度也是螺旋线圈EMAT的重要评价指标. 表3 激励EMAT的6因素3水平正交试验表 Table 3 Orthogonal test table of six elements... MHz的正弦脉冲串,经功率放大器将信号放大,进入激励端阻抗匹配将激励电压加载到发射EMAT探头上,激励出沿铝块厚度方向传播超声波.接收EMAT收到感生电压信号,经过接收端阻抗匹配,前置放大及滤波电路,再通过数据采集卡,最终在Labview界面显示出A扫波形. 图8 电磁超声检测实验系统框图 Fig. 8 Schematic diagram of EMAT experiment system 本......
+, Er3+; luminescence; orthogonal experiment 稀土上转换发光材料是一种在红外光的激发下能够发出可见光的发光材料,可在吸收两个或两个以上的低能量光子后发射一个高能量的光子[1].稀土上转换发光材料因其独特的发光性能广泛应用于防伪[2],激光器,三位平面显示[3-6],太阳能电池[7],光动力疗法[8-9]等领域.近年来,在生物医学领域,上转换发光材料作为生物荧光... on the luminescence properties of the products were investigated. And the synthetic conditions were optimized by orthogonal experiments. Then, the products were characterized by XRD and SEM. The results show......
obtained by experiments with orthogonal experimental design that the Ar flow rate is 1.0?1.5 L/min, the degassing time is 20?25 min and the temperature of magnesium melt is 725?750 ℃. The degassing... with the real values because hydrogen enters into magnesium melt with degassing under real condition. Key words: magnesium alloy melt; degassing; orthogonal experimental method; thermodynamics......
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of Science and Technology Beijing, Beijing 100083, China) Abstract: Based on the orthogonal experiment, the effects of roasting temperature, molar ratio of carbon to oxygen, mass fraction of water, binary...正交实验方案 Table 2 Orthogonal experiment scheme of dezincification 粉尘团块中高炉布袋灰和电炉灰以3:7质量比混合,使用水泥作为黏结剂且配加量为10%(质量分数),焦粉作为还原剂,并通过添加分析纯SiO2或CaO粉末以调节团块碱度.首先将原料按比例混和后加水充分混匀,每10.00 g混匀料装入直径为20 mm模具中压制成块,压......
高压-底吹氮法高氮钢精炼因素分析赵定国1,吕晓芳2,王书桓3,白艳江3(1.北京市钢铁研究总院先进钢铁流程及材料国家重点实验室2.邢台职业技术学院 资源与环境工程系,河北邢台 0540003.河北理工大学 冶金与能源学院,河北唐山 063009)摘 要:阐述了高压-底吹氮法精炼高氮钢的特点.在实验室进行了小型热态正交实验,通过分析实验数据,确定了各因素对钢中氮含量的影响程度由高到低依次为压力,合金Cr含量,合金Mn含量和温度.根据实验数据和热力学数据采用回归系数法,建立了钢液中氮含量的计算式,利用公式可以计算不......