PICALO 2008 Paper #1204 (Mechanism Analysis on Dry-Friction Abrasive Wear Resistance of Particulate Reinforced Mmc Coatings by Laser Deposition for Corrugated Rollers)

Mechanism Analysis on Dry-Friction Abrasive Wear Resistance of Particulate Reinforced Mmc Coatings by Laser Deposition for Corrugated Rollers
Authors:
Zhaoyong Qian, Tsinghua University, Dept of Mechanical Engineering; Beijing Peoples Republic of China
Minlin Zhong, Tsinghua University; Beijing Peoples Republic of China
Wenjin Liu, Tsinghua University, Dept of Mechanical Engineering; Beijing Peoples Republic of China
Mingxing Ma, Tsinghua University; Beijing Peoples Republic of China
Chaofeng Wu, Tsinghua University; Beijing Peoples Republic of China
Dongye Zhang, Tsinghua University; Beijing Peoples Republic of China
Presented at PICALO 2...

PICALO 2008 Paper #1205 (Metal Matrix Nano H-Bn Self-Lubricating Composite Coating Synthesized by Nd:Yag Laser Cladding)

Metal Matrix Nano H-Bn Self-Lubricating Composite Coating Synthesized by Nd:Yag Laser Cladding
Authors:
A.H. Wang, Huazhong University of Science and Technology; Wuhan Peoples Republic of China
X.L. Zhang, Huazhong University of Science and Technology ; Wuhan Peoples Republic of China
X.F. Zhang, Huazhong University of Science and Technology ; Wuhan Peoples Republic of China
X.W. Xiong, Huazhong University of Science and Technology ; Wuhan Peoples Republic of China
H.G. Xu, Huazhong University of Science and Technology ; Wuhan Peoples Republic of China
C.S Xie, Huazhong University of Science and Technology ; Wuhan Peoples Republic of China<...

PICALO 2008 Paper #1207 (Laser Melt Injection of Monocrystalline WC Particles into Ti-6Al-4V)

Laser Melt Injection of Monocrystalline WC Particles into Ti-6Al-4V
Authors:
Dejian Liu, Harbin Institute of Technology; Harbin Peoples Republic of China
Fuquan Li, Harbin Institute of Technology; Harbin Peoples Republic of China
Liqun Li, Harbin Institute of Technology; Harbin Peoples Republic of China
Yanbin Chen, Harbin Institute of Technology; Harbin Peoples Republic of China
Presented at PICALO 2008

The laser melt injection (LMI) process was explored to produce WC particles (WCp) reinforced Ti-6Al-4V metal matrix composites (MMCs). In particular the high strength monocrystalline WC particles was used as injection particles to avoid the intercrysta...

PICALO 2008 Paper #1208 (Residual Stress Distribution in Laser Alloying Zone with Fecsib Powder)

Residual Stress Distribution in Laser Alloying Zone with Fecsib Powder
Authors:
Haiyan Zhao, Department of Mechanical Engineering, Tsinghua University ; Beijing Peoples Republic of China
Zhengyang Li, Department of Mechanical Engineering, Tsinghua University; Beijing Peoples Republic of China
Bin Zhang, Department of Mechanical Engineering, Tsinghua University; Beijing Peoples Republic of China
Minlin Zhong, Department of Mechanical Engineering, Tsinghua University; Beijng Peoples Republic of China
Yu Gu, Department of Mechanical Engineering, Tsinghua University; Beijing Peoples Republic of China
Qiulin Wu, Beijing Beiye Functional Materials Co.Lt...

PICALO 2008 Paper #201 (A New Method of Laser Beam Induced Surface Modification using the Surfi-Sculpt Process (Invited Paper))

PICALO 2008 Paper #202 (Colour Marking of Metals with Fibre Lasers)

Colour Marking of Metals with Fibre Lasers
Authors:
Anthony Tse, A & P Instrument Co. Ltd; Kowloon Bay Hk Hong Kong
Lu Ming, Spi Lasers; Southampton Great Britain
Tony Hoult, Spi Lasers Llc; Santa Clara CA USA
Presented at PICALO 2008

Laser marking has become a standard industrial process. Recent refinements in laser source technology have enabled the development of colour marking of metals such as stainless steel. The high level of control of the localised heating required in the material can be achieved with a pulsed 20W laser capable of operating in the 20-500kHz range. The flexibility offered by the laser in terms of pulse shape, length and power enables an extensi...

PICALO 2008 Paper #203 (Laser Producing Ni-Matrix Composite Reinforced by In-Situ Synthesized Particles)

Laser Producing Ni-Matrix Composite Reinforced by In-Situ Synthesized Particles
Authors:
Mingxing Ma, Tsinghua University, Dept of Mechanical Engineering; Beijing Peoples Republic of China
Jiannan Gu, Tsinghua University; Breijing Peoples Republic of China
Minlin Zhong, Tsinghua University; Beijing Peoples Republic of China
Ruiquan Kang, Tsinghua University, Dept of Mechanical Engineering; Beijing Peoples Republic of China
Wenjin Liu, Tsinghua University, Dept of Mechanical Engineering; Beijing Peoples Republic of China
Weiming Zhang , Tsinghua University; Beijing Peoples Republic of China
Hongjun Zhang, Tsinghua University; Beijing Pe...

PICALO 2008 Paper #204 (Microstructure and Property of Ni-P-Nano Al2O3 Electroless Plating Layer Produced on Medium Carbon Steel Treated by Laser Technology)

Microstructure and Property of Ni-P-Nano Al2O3 Electroless Plating Layer Produced on Medium Carbon Steel Treated by Laser Technology
Authors:
Fanzhi Kong, Zhejiang University of Technology; Hangzhou Peoples Republic of China
Aihuan Dun, Zhejiang University of Technology; Hangzhou Peoples Republic of China
Jianhua Yao, Zhejiang University of Technology; Hangzhou Peoples Republic of China
Presented at PICALO 2008

Uniform Ni-P-nano Al2O3 eletroless plating layer was produced on medium carbon steel, and scanned by high power continuous waveCWCO2 laser beam. Optical microscope (OM) and scanning electron microscopy (SEM) were used to observe the morphologies of coating...

PICALO 2008 Paper #205 (Surface Modification of Dental Hard Tissues using Pulsed Uv Lasers (Invited Presentation))

Surface Modification of Dental Hard Tissues using Pulsed Uv Lasers (Invited Presentation)
Authors:
Rui Vilar, Instituto Superior Tecnico; Lisboa Codex Portugal
Victor Oliveira, Instituto Superior Técnico; Lisboa Portugal
Presented at PICALO 2008

In the presentation the surface texture, structural and chemical changes induced in human dental hard tissues (dentin and enamel) by laser processing with KrF excimer laser radiation will be analysed. In dentin, the evolution of surface topography depends on the orientation of the tubules in relation to the incoming laser beam and on the radiation fluence. For fluences larger than 1 J/cm2 the processed surface is flat and covered with a th...

PICALO 2008 Paper #206 (Numerical and Experimental Investigation of Thermal Stresses and Distortions in the Induction Assisted Laser Cladding)

Numerical and Experimental Investigation of Thermal Stresses and Distortions in the Induction Assisted Laser Cladding
Authors:
Dietrich Lepski, Fraunhofer Institute for Material and Beam Technology Iws; Dresden Germany
Frank Brückner, Fraunhofer IWS Dresden; Dresden Germany
Eckhard Beyer, Fraunhofer Institute for Material and Beam Technology Iws & Lot/Iof Dresden University of Technology; Dresden Germany
Presented at PICALO 2008

In the laser cladding process the powdery coating material is resorbed by the laser induced melt pool and strongly joint to the subjacent substrate. The very high gradients of the laser induced temperature field as well as density changes due ...