方双全
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- 姓名:方双全
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学科领域:
材料科学
- 研究兴趣:
方双全,男,1977年出生,哈尔滨工程大学副教授、硕士生导师。1999年毕业于哈尔滨建筑大学,获复合材料专业学士学位;2001年毕业于哈尔滨工业大学材料学专业,获材料学硕士学位;2005年毕业于哈尔滨工业大学复合材料与结构研究所,获工程力学博士学位;2006年进入哈尔滨工程大学材料科学与工程博士后流动站工作,2007年4月被哈尔滨工程大学破格晋升为副教授。学习与工作期间,先后参与与主持了国家“863”、“973”、国防预研项目、国家自然科学基金、教育部博士点基金、中国博士后基金、黑龙江省博士后基金、黑龙江省科技攻关计划等十几项科研项目。一直从事无机非金属材料如陶瓷及陶瓷基复合材料、人工晶体材料、金属间化合物及其复合材料、高温结构材料、碳材料的制备与性能研究工作,参与研制的碳陶瓷复合密封材料先后获得哈尔滨市科技进步二等奖与黑龙江省科技进步三等奖,参与的黑龙江省科技攻关计划“碳陶瓷复合材料制备及性能预报”获得了黑龙江省国防科学技术委员会科技进步一等奖,并于2007年8月被佳木斯市人民政府聘请为“中小企事业服务特聘专家”。发表学术论文近三十篇,其中SCI收录论文20篇,EI收录论文6篇,申请国家发明专利1项。
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408
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成果数
10
【期刊论文】Fast photorefractive responsein LiNbO3 crystal co-doped with Fe/Sm ions
方双全, Sh. Q. Fang, X. H. Zhang, Y. J. Qiao, Fu. R. Ling, Y. Q. Zhao
Journal of Alloys and Compounds 438 (2007) 317–320,-0001,():
-1年11月30日
Sm: Fe: LiNbO3 crystal was grown by doping Sm2O3 in Fe: LiNbO3 crystal. The exponential gain coefficient, diffraction efficiency and photorefractive response time were measured by two-wave mixing experiment, respectively. it was found that the response speed was greatly improved by doping Sm ions in Fe: LiNbO3 crystal. Our analysis also showed that photoconductivity enhancement was responsible for improving the response speed in the Sm: Fe: LiNbO3 crystal.
Sm: Fe: LiNbO3 crystal, Exponential gain coefficient, Diffraction efficiency, Response time
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【期刊论文】Growth and characteristics of near-stoichiometric Zn: LiNbO3 crystals grown by TSSG method
方双全, Shuangquan Fang, Biao Wang, Tao Zhang, Furi Ling, Yequan Zhao
Materials Chemistry and Physics 89 (2005) 249–252,-0001,():
-1年11月30日
A series of near-stoichiometric Zn: LiNbO3 (Zn: NSLN) crystals were grown by the top seed solution growth (TSSG) method using K2Oas flux. Defect structures and Zn2+ occupation mechanism were analyzed and discussed by X-ray powder diffraction (XRD), differential thermal analysis (DTA), ultraviolet-visible (UV) absorption and infrared (IR) spectrum measurement. Moreover, we also found that the threshold concentration of ZnO in NSLN were between 2 and 3 mol%.
LiNbO3, Near-stoichiometric, Dsefect structure, Threshold
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【期刊论文】Growth and optical properties of Mg, Fe Co-doped LiTaO3 crystal
方双全, Shuangquan Fang, Decai Ma, Tao Zhang, Furi Ling, Biao Wang
Optik 117 (2006) 72–76,-0001,():
-1年11月30日
Mg, Fe double-doped LiTaO3 and LiNbO3 crystals have been grown by Czochralski method. The optical properties were measured by two-beam coupling experiments and transmitted facula distortion method. The results showed that the photorefractive response speed of Mg: Fe: LiTaO3 was about three times faster than that of Fe: LiTaO3, whereas the photo-damage resistance was two orders of magnitude higher than that of Fe: LiTaO3. in this paper, site occupation mechanism of impurities was also discussed to explain the high photo-damage resistance and fast response speed in Mg: Fe: LiTaO3 crystal.
Mg: Fe: LiTaO3 crystal, Exponential gain coefficient, Diffraction efficiency, Response speed, Photo-damage resistance
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【期刊论文】Growth and photorefractive properties of Zn, Fe double-doped LiTaO3 crystal
方双全, Shuangquan Fang, Biao Wang, Tao Zhang, Furi Ling, Rui Wang
Optical Materials 28 (2006) 207–211. ,-0001,():
-1年11月30日
Zn, Fe double-doped LiTaO3 crystals have been grown by the Czochralski method. The photorefractive properties and optical damage resistance were measured by the two-beam coupling experiments and transmitted facula distortion method, respectively. The results showed that the photorefractive response speed of Zn: Fe: LiTaO3 was about four times faster than that of Fe: LiTaO3, whereas the optical damage resistance was two orders of magnitude higher than that of Fe: LiTaO3. in this paper, site occupation mechanism of impurities was also discussed to explain the high optical damage resistance and fast response speed of Zn: Fe: LiTaO3 crystal.
Zn: Fe: LiTaO3 crystal, Exponential gain coefficient, Diffraction efficiency, Response speed, Optical damage resistance
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方双全, Shuang-Quan Fang, Yingjie Qiao, Xiaohong Zhang, Furi Ling
phys. stat. sol. (a), No.3, 833–838 (2007),-0001,():
-1年11月30日
A series of Sc: Ce: Cu: LiNbO3 crystals were prepared using the Czochralski method and the occupation mechanism of the dopants is discussed in terms of the results of infrared and UV–visible spectra. The optical damage resistance ability and quasi-nonvolatile holographic properties of the samples were also obtained. The defect structure is discussed, accounting for the optical damage resistance and two-photon holographic response speed.
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【期刊论文】INFLUENCE OF POST-TREATMENT CONDITIONS ON PHOTOREACTIVE EFFECT OF Zn: Fe: LiNbO3 CRYSTALS
方双全, Shuang-Quan Fang, De-cai Ma, Biao Wang, Fu-Ri Ling, G. Wang
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS Vol.48, No.5, May 2006,-0001,():
-1年11月30日
Three kinds of different Zn: Fe: LiNbO3 wafers are pre- pared by proper reduction or oxidation post-treatment processes. The optical-damage-resistance abilities and photorefractive properties are studied using the optical compensator technique and two-wave coupling measurement, respectively. The holographic storage properties, that is, diffraction efficiency, writing time, erasure time, photorefractive sensitivity, and dynamic range, are also measured or calculated. The analyses indicate that the sample disposed by reduction is the most proper media for holographic storage application.
Zn: Fe: LiNbO3, post-treatment, optical damage resistance, photorefractive properties
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方双全, 谢怀勤, 刘文博
哈尔滨工业大学学报2003年2月第35卷第2期/JOURNAL OF HARBIN INSTITUTE OF TECHNOLOGY Vol.35, No.2, Feb.,2003,-0001,():
-1年11月30日
SMC模压成型过程固化度与温度是强耦合关系。为了对SMC模压成型过程非稳态温度场与固化度进行数值模拟,依据固化动力学和非稳态导热理论,建立了温度场和固化度动力学模型。通过DSC试验分析确定模型中固化度动力学参数。利用有限单元与有限差分相结合的方法,建立了温度场和固化度数值模型。应用Euler逐步迭代法实现了计算机解耦,数值模拟与试验比较,结果吻合,为优化模压成型工艺提供了理论依据。
SMC, 模压工艺, 数值模拟, 非稳态温度场, 固化度
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方双全, Shuang-Quan Fang, Ying-Jie Qiao, De-Cai Ma, Fu-Ri Ling, Ye-Quan Zhao
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS/Vol.48, No.10, October 2006 ,-0001,():
-1年11月30日
Near-stoichiometric LiNbO3 single crystals codoped with Zn and Fe (Zn:Fe:NSLN) were grown by Czochralski (CZ) method using Li-rich melts. Structure analysis was performed by the X-ray powder diffraction and ultraviolet–visible (UV) absorption spectra in these samples. Experimental results showed that the lattice constant values increased with the increasing ZnO content in melt and ultraviolet absorption edge shifts to the shorter wavelength when compared with pure near-stoichiometric sample in Zn:Fe:NSLN. In addition, the optical damage resistance was also measured, which was several order of magnitude increased when compared with near-stoichiometric LiNbO3:Fe (Fe:NSLN) crystal. Holographic experiments were performed to analyze quantitatively the enhancement of the optical damage resistance.
LiNbO3, near-stoichiometric, UV absorption spectrum, optical damage resistance
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【期刊论文】聚合物基复合材料模压成型过程固化度与非稳态温度场的数值模拟
方双全, 谢怀勤, 陈辉
复合材料学报2003年10月第20卷第5期/ACTA MATERIAE COMPOSITAE SINICA Vol.20, No.5, October 2003,-0001,():
-1年11月30日
聚合物基复合材料模压成型过程固化度与温度的动态变化为强耦合关系。本文作者根据固化动力学和传热学理论,建立了非稳态温度场与固化动力学数学模型。通过DSC实验分析确定模型中固化动力学参数。利用有限单元与有限差分相结合的方法,建立了温度场和固化度数值模型。应用Euler逐步迭代法实现解耦。对聚合物基复合材料模压成型过程固化度与非稳态温度场动态变化进行计算机数值模拟,与试验测定结果吻合。为优化模压成型工艺提供理论依据。
聚合物基复合材料, 模压工艺, 固化度, 非稳态温度场, 数值模拟
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【期刊论文】自蔓延高温合成TiB2/Al2O3复合材料的力学性能
方双全, 乔英杰, 姜鹏, 黄冕, 杨继军
稀有金属材料与工程2007年8月第36卷增刊1/RARE METAL MATERIALS AND ENGINEERING Vol.36, Suppl.1, August 2007,-0001,():
-1年11月30日
以普通商用TiO2为原料,与铝粉、碳化硼进行自蔓延(SHS)高温合成TiB2/Al2O3复合材料,通过差热和X射线衍射分析,确定了TiO2、Al及B4C的反应机制,得到了生成TiB2/Al2O3复合粉体的最佳工艺条件。测定了TiB2/AI203复合粉体相关的力学性能,得到材料的抗压强度为87.2MPa,抗弯曲强度为104.3MPa。SEM观察发现生成相中存在大量的气相或气孔,生成物微观区域不太均匀,材料的断裂形式主要为脆性断裂,生成物的颗粒尺寸为亚微米级。
差热分析, SHS, TiB2/Al2O3复合材料
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