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Glass ceramic of high hardness and fracture toughness developed from iron-rich wastes

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Acta Metallurgica Sinica(English Letters) 2009年第3期22卷 181-190页

作者： Weixin HAN Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China manuscript received 27 October 2008 in revised form 17 November 2008 [a]Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

A study has been carried out on the feasibility of using high iron content wastes, generated during steel making, as a raw material for the production of glass ceramic. The iron-rich wastes were mixed and melted in different proportions with soda-lime glass cullet and sand. The devitrification of the parent glasses produced from the different mixtures was investigated using differential thermal analysis, X-ray diffraction, and scanning electron microscopy. The mechanical properties of the glass-ceramic were assessed by hardness and indentation fracture toughness measurement. A glass ceramic with mixture of 60 wt pct iron-rich wastes, 25 wt pct sand, and 15 wt pct glass cullet exhibited the best combination of properties, namely, hardness 7.9 CPa and fracture toughness 3.75 MPa·m^1/2, for the sake of containing magnetite in marked dendritic morphology. These new hard glass ceramics are candidate materials for wear resistant tiles and paving for heavy industrial floors.

关键词： Iron-rich wastes Glass ceramics Vitrification Hardness

Study of a Waveguide CO2 Laser with Two Parallel Tubes

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Chinese Journal of Lasers 1998年第1期 12-17页

作者： HUANG Yuangqing(Dept. of Sci. Instr. and Precision Mech. of Xiamen Univ.,Xiamen, 361005, China)received Dec. 23 1996 revised manuscript received apr. 22 1997

ＳｔｕｄｙｏｆａＷａｖｅｇｕｉｄｅＣＯ２ＬａｓｅｒｗｉｔｈＴｗｏＰａｒａｌｅｌＴｕｂｅｓＨＵＡＮＧＹｕａｎｇｑｉｎｇ（Ｄｅｐｔ．ｏｆＳｃｉ．Ｉｎｓｔｒ．ａｎｄＰｒｅｃｉｓｉｏｎＭｅｃｈ．ｏｆＸｉａｍｅｎＵｎｉｖ．，Ｘ... 详细信息

ＳｔｕｄｙｏｆａＷａｖｅｇｕｉｄｅＣＯ２ＬａｓｅｒｗｉｔｈＴｗｏＰａｒａｌｅｌＴｕｂｅｓＨＵＡＮＧＹｕａｎｇｑｉｎｇ（Ｄｅｐｔ．ｏｆＳｃｉ．Ｉｎｓｔｒ．ａｎｄＰｒｅｃｉｓｉｏｎＭｅｃｈ．ｏｆＸｉａｍｅｎＵｎｉｖ．，Ｘｉａｍｅｎ，３６１００５，Ｃｈｉｎ...

关键词： two parallel tubes waveguide CO2 laser single cathode double anode

Temporal Aberration of the Focused Inhomogeneous Wave from a Misalignment Parallel Grating Pair Compressor

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Chinese Journal of Lasers 1998年第1期 57-63页

作者： XU Shixiang ZHANG Hua FAN Dianyuan(Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, P.O.Box 800211,Shanghai 201800, China) received apr. 9 1997 revised manuscript received May 27 1997

ＴｅｍｐｏｒａｌＡｂｅｒａｔｉｏｎｏｆｔｈｅＦｏｃｕｓｅｄＩｎｈｏｍｏｇｅｎｅｏｕｓＷａｖｅｆｒｏｍａＭｉｓａｌｉｇｎｍｅｎｔＰａｒａｌｅｌＧｒａｔｉｎｇＰａｉｒＣｏｍｐｒｅｓｏｒＸＵＳｈｉｘｉａｎｇＺＨＡＮＧＨｕａ... 详细信息

ＴｅｍｐｏｒａｌＡｂｅｒａｔｉｏｎｏｆｔｈｅＦｏｃｕｓｅｄＩｎｈｏｍｏｇｅｎｅｏｕｓＷａｖｅｆｒｏｍａＭｉｓａｌｉｇｎｍｅｎｔＰａｒａｌｅｌＧｒａｔｉｎｇＰａｉｒＣｏｍｐｒｅｓｏｒＸＵＳｈｉｘｉａｎｇＺＨＡＮＧＨｕａＦＡＮＤｉａｎｙｕａｎ（Ｓｈａｎｇ...

关键词： inhomogenous wave parallel grating pair compressor misalignment

The Experimental Study of a 100W Copper Vapor Laser

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Chinese Journal of Lasers 1998年第1期 8-11页

作者： CHEN Lin TAO Yongxian YIN Xianhua WANG Renwen(Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,P.O.Box 800211, Shanghai 201800, China)received apr. 29 1997 revised manuscript received May 27 1997

ＴｈｅＥｘｐｅｒｉｍｅｎｔａｌＳｔｕｄｙｏｆａ１００ＷＣｏｐｐｅｒＶａｐｏｒＬａｓｅｒＣＨＥＮＬｉｎＴＡＯＹｏｎｇｘｉａｎＹＩＮＸｉａｎｈｕａＷＡＮＧＲｅｎｗｅｎ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＯｐｔｉｃｓａ... 详细信息

ＴｈｅＥｘｐｅｒｉｍｅｎｔａｌＳｔｕｄｙｏｆａ１００ＷＣｏｐｐｅｒＶａｐｏｒＬａｓｅｒＣＨＥＮＬｉｎＴＡＯＹｏｎｇｘｉａｎＹＩＮＸｉａｎｈｕａＷＡＮＧＲｅｎｗｅｎ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＯｐｔｉｃｓａｎｄＦｉｎｅＭｅｃｈａｎｉｃｓ，Ｃ...

关键词： copper vapor laser alumina bulk fiber thyratron

Laser Induced Damage in CVD Diamond Films

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Chinese Journal of Lasers 1998年第1期 74-79页

作者： QIU Hong FAN Zhengxiu(Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,P.O.Box 800211, Shanghai 201800, China)received apr. 15 1997 revised manuscript received July 19 1997

ＬａｓｅｒＩｎｄｕｃｅｄＤａｍａｇｅｉｎＣＶＤＤｉａｍｏｎｄＦｉｌｍｓＱＩＵＨｏｎｇＦＡＮＺｈｅｎｇｘｉｕ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＯｐｔｉｃｓａｎｄＦｉｎｅＭｅｃｈａｎｉｃｓ，ＣｈｉｎｅｓｅＡｃａｄｅ... 详细信息

ＬａｓｅｒＩｎｄｕｃｅｄＤａｍａｇｅｉｎＣＶＤＤｉａｍｏｎｄＦｉｌｍｓＱＩＵＨｏｎｇＦＡＮＺｈｅｎｇｘｉｕ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＯｐｔｉｃｓａｎｄＦｉｎｅＭｅｃｈａｎｉｃｓ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，Ｐ．Ｏ．...

关键词： CVD diamond film XRD LIDT absorption

Influence of Grain Boundary on Fatigue Behavior of Ni-base Bicrystals

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Journal of Materials Science & Technology 2002年第1期18卷 69-72页

作者： Jiansong WAN, Zhufeng YUE, Xiaoliang GENG and Zhixian LUDepartment of Engineering Mechanics, Northwestern Polytechnical University, Xi’an 710072, China [ manuscript received January 16, 2001, in revised form apr.l 27, 2001] Dept. of Eng. Mech. Northwestern Polytech. Univ. Xi'an 710072 China

The influence of the grain boundary on the fatigue behavior was studied by two three-point-bending (TPB) specimens. One TPB specimen was named Bicrystal 1, whose pre-crack was along the grain boundary and the applied load paralleled to pre-crack direction, while the other TPB specimen was named Bicrystal 2, whose the pre-crack was perpendicular to the grain boundary and the applied load paralleled also to the pre-crack. It was found that the rate of the fatigue crack growth of Bicrystal 1 was about a tenfold higher than that of Bicrystal 2. The fatigue behavior of Bicrystal 2 specimens was dependent on the distance between the crack tip and grain boundary. The crack growth rate was highest when the crack tip was at a critical distance to the grain boundary, while the rate was the lowest when the crack tip reached grain boundary. After the crack was over the grain boundary, the crack growth rate increased. The crystallographic finite element method was applied to analyze the stress and strain structure ahead of the crack, in order to reveal the above characteristics of the fatigue behavior. It is the grain boundary-induced redistribution of stresses near the crack tip that induces the difference of fatigue behavior.

关键词： Bicrystals Fatigue behavior Grain boundary Shielding effect

EFFECT OF RESIDUAL STRESS ON THE MARTENSITIC TRANSFORMATION OF SPUTTER-DEPOSITED SMA THIN FILMS

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Acta Metallurgica Sinica(English Letters) 2002年第4期15卷 391-395页

作者： L.Wang,D.Xu and B.C.CaiInformation Storage Research Center, Shanghai Jiao Tong University, Shanghai 200030, China manuscript received 14 September 2001 in revised form 27 November 2001 Information Storage Research Center Shanghai Jiao Tong University

TiNi thin films were sputter-deposited on circular single-crystal silicon substrates un-der various sputtering parameters. The crystal structure and residual stress of the as-deposited films were determined by X-ray diffraction and substrate-curvature method. The phenomenon of stress-suppressed martensitic transformation was observed. R is considered that the residual stresses in SMA thin films based on circular substrates act as balanced biaxial tensile stresses. The status of equilibrant delays the align-ment of self-accommodated variants and the volume shrinkage during the martensitic transformation.

关键词： martensitic transformation residual stress TiNi thin film shape memory alloy

Quantum Key Distribution Based on Coherent States

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Chinese Journal of Lasers 1998年第5期 94-97页

作者： SHI Baosen GUO Guangcan (Department of Physics, Center of Nonlinear Science, University of Science and Technology of China, Hefei 230026, China) received Nov. 10, 1997 revised manuscript received apr. 13, 1998

Ｏｎｅｏｆｔｈｅｍｏｓｔｉｎｔｒｉｇｕｉｎｇａｎｄｅｘｃｉｔｉｎｇｒｅｃｅｎｔｄｅｖｅｌｏｐｍｅｎｔｓｉｎｑｕａｎｔｕｍｍｅｃｈａｎｉｃｓｉｓｔｈｅｐｒｅｄｉｃｔｉｏｎａｎｄｄｅｍｏｎｓｔｒａｔｉｏｎｏｆａｃｒｙｐｔ... 详细信息

Ｏｎｅｏｆｔｈｅｍｏｓｔｉｎｔｒｉｇｕｉｎｇａｎｄｅｘｃｉｔｉｎｇｒｅｃｅｎｔｄｅｖｅｌｏｐｍｅｎｔｓｉｎｑｕａｎｔｕｍｍｅｃｈａｎｉｃｓｉｓｔｈｅｐｒｅｄｉｃｔｉｏｎａｎｄｄｅｍｏｎｓｔｒａｔｉｏｎｏｆａｃｒｙｐｔｏｇｒａｐｈｉｃｋｅｙｄｉｓｔｒｉ...

关键词： quantum cryptography quantum key distribution coherent states

Effects of the Composition of Electrodeposited Fe-Ni-P Alloy on the Thermostability and Magnetic Properties

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Journal of Materials Science & Technology 1997年第2期13卷 137-140页

作者： Chenghui GAO Baiyang ZHOU (Institute for Materials Research, Fuzhou University, Fuzhou 350002, China)(manuscript received February 22, 1996, in revised form June 3, 1996) Institute for Materials Research Fuzhou University Fuzhou 350002 China

The magnetic properties, structure defects of electrodeposited Fe-Ni-P alloys with various compositions and the thermostability at amorphous state have been studied by DSC, positron annihilation and electronic integrating instrument methods. The results show that the thermostability of amorphous Fe-Ni-P alloys increases with Fe content. Emergence and recrystallization of stable phases defer as the P content of the coating increases. The minimum H-c, B-r and P-h occur at 9.4 P (wt pet) content. Maximum H-c, B-r and P-h occur at the weight ratio of Fe to Ni equaling to 1/9.

关键词： Ni Fe Effects of the Composition of Electrodeposited Fe-Ni-P Alloy on the Thermostability and Magnetic Properties