Laser cladding by 10KW–CO2 laser wide–band scanning pyramid mirror

1994 ◽  
Author(s):  
Yang Xi-Chen ◽  
Wang Bao-Qi ◽  
Wang Yun-Shan ◽  
Zhao Xin ◽  
Cha Hong-Kui ◽  
...  
Keyword(s):  
Laser Cladding ◽  
Co2 Laser ◽  
Wide Band

Microstructure of SiC/Al composite coating by CO2 laser cladding

2004 ◽  
Author(s):  
Yang Xi-Chen ◽  
Li Hui-Shan ◽  
Wang Yun-Shan ◽  
Ma Bing ◽  
Yi Ying-Hui
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Co2 Laser ◽  
Al Composite

Laser cladding with wide-band scanning rotative polygon mirror

1989 ◽  
Author(s):  
Xi-Chen Yang ◽  
Yu-He Yan ◽  
Men-Lin Zhong ◽  
Jiang-Ting Zhang ◽  
Nai-Kun Zhang ◽  
...  
Keyword(s):  
Laser Cladding ◽  
Wide Band

Diode Laser Cladding on A5052 Aluminium Alloy for Wear Resistance

2005 ◽  
Author(s):  
Shingo Iwatani ◽  
Yasuhito Ogata ◽  
Keisuke Uenishi ◽  
Kojiro F. Kobayashi ◽  
Akihiko Tsuboi
Keyword(s):  
Wear Resistance ◽  
Aluminium Alloy ◽  
Diode Laser ◽  
Laser Cladding ◽  
Co2 Laser ◽  
Reaction Layer ◽  
Heat Input ◽  
Aluminium Content ◽  
Alloy Substrate ◽  
Clad Layer

In order to improve a wear resistance of aluminium alloy, we proposed a diode laser cladding on the surface of a A5052 aluminium alloy. Firstly, an applicability of diode laser to laser cladding was evaluated. In this result, application of diode laser made it possible to obtain stable beads in low heat input compared with CO2 laser. According to the increase in aluminium content in the obtained clad layer, the microstructure of the clad layer changed as γ (8∼20%) → γ + α (10∼30%) → Fe3Al (30%∼). At the interface between the clad layer and the aluminium alloy substrate, the reaction layer consisting of Fe2Al5 and FeAl3 formed. In the abrasion wear the obtained clad layers exhibited a higher wear resistance compared with the aluminium alloy.

Wide-band interferometric tuning of a multiatmosphere CO2 laser

1976 ◽  
Vol 16 (1) ◽  
pp. 57-62 ◽  
Author(s):  
N.W. Harris ◽  
F. O'Neill ◽  
W.T. Whitney
Keyword(s):  
Co2 Laser ◽  
Wide Band

Bioactivity of Gradient Rare Earths Bioceramic Coating Produced by Wide-Band Laser Cladding

Applied laser ◽  
2012 ◽  
Vol 32 (5) ◽  
pp. 384-389
Author(s):  
李明 Li Ming ◽  
汪震 Wang Zhen
Keyword(s):  
Laser Cladding ◽  
Rare Earths ◽  
Wide Band

Energy redistribution during CO2 laser cladding

2001 ◽  
Author(s):  
H. Gedda ◽  
J. Powell ◽  
G. Wahlström ◽  
W-B. Li ◽  
H. Engström ◽  
...  
Keyword(s):  
Laser Cladding ◽  
Co2 Laser ◽  
Energy Redistribution

Effect of Rare Earth Y2O3 Content on Microstructure of Gradient Bioceramic Composite Coating Produced by Wide-Band Laser Cladding

2005 ◽  
Vol 288-289 ◽  
pp. 351-354 ◽  
Author(s):  
Qi Bin Liu ◽  
Long Jiang Zou ◽  
Min Zheng ◽  
Chuang Dong
Keyword(s):  
Rare Earth ◽  
Composite Coating ◽  
Laser Cladding ◽  
Dominant Role ◽  
Monosodium Glutamate ◽  
Wide Band ◽  
Experimental Results ◽  
Ti Alloy ◽  
Y2o3 Content ◽  
Rare Earth Content

In the present paper, bioceramic coating with gradient compositional design was prepared on surface of Ti alloy by using wide-band laser cladding. Effect of rare earth Y2O3 content on gradient bioceramic composite coating was studied. The experimental results indicated that adding rare earth can refine grain. Different contents of rare earth affect formation of HA andβ-TCP in bioceramic coating. With increase of rare earth content, HA andβ-TCP were synthesized. When content of rare earth ranged from 0.4% to 0.6%, the active extent of rare earth in synthesizing HA andβ-TCP got best, which indicated that “monosodium glutamate” effect of rare earth played a dominant role. However, when rare earth content was up to 0.8%, the active extent of rare earth in synthesizing HA and β-TCP conversely went down, which demonstrated that rare earth gradually lost its catalysis in manufacturing HA andβ-TCP.

Microstructure and Biocompatibility of Gradient Bioceramic Composite Coating Fabricated by Wide-Band Laser Cladding

2007 ◽  
Vol 342-343 ◽  
pp. 685-688 ◽  
Author(s):  
Qi Bin Liu ◽  
Wen Fei Li ◽  
Bang Cheng Yang
Keyword(s):  
Bone Tissue ◽  
Chronic Inflammation ◽  
Composite Coating ◽  
Laser Cladding ◽  
Transition Layer ◽  
Wide Band ◽  
Pathological Changes ◽  
Hard Tissues ◽  
Piled Structure ◽  
Bioceramic Coatings

In this study, microstructure and biocompatibility of gradient bioceramic composite coating fabricated by Wide-Band Laser Cladding is investigated. The experimental results indicate that the coating consists of an alloyed transition layer and the bioceramic coating. The bioceramic coating is mainly comprised of HA, CaTiO3, CaO, α-TCP, β-TCP and TiO. The coral-shaped structure and short-rod piled structure existing on the surface of coating. After the implantation of the bioceramic coatings into dogs’ femur for 6, 12, and 24 weeks, hypersusceptibility, rejection and pathological changes are not found. No fiber cyst, necrosis of bone tissue and chronic inflammation obviously appear through slice observation of hard tissues. The bioceramic coating with different ratios of Ca : P have different abilities to induce osteogenesis. At Ca: P=1.4 and 0.6wt.% Y2O3 (No.3 sample), the bioceramic coating is of best bioactivity and biocompatibility.

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