Laser surface treatment of screen-printed carbon nanotube emitters for enhanced field emission

2009 ◽  
Vol 255 (11) ◽  
pp. 5770-5774 ◽  
Author(s):  
Chung-Wei Cheng ◽  
Chun-Ming Chen ◽  
Yung-Chun Lee
Keyword(s):  
Carbon Nanotube ◽  
Surface Treatment ◽  
Field Emission ◽  
Laser Surface ◽  
Laser Surface Treatment ◽  
Screen Printed

Laser surface treatment of granite stones

2001 ◽  
Author(s):  
J. Pou ◽  
R. Soto ◽  
C. Trillo ◽  
A. F. Doval ◽  
M. Boutinguiza ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Laser Surface ◽  
Laser Surface Treatment

Ni Content Surface Layer Produced by Laser Surface Treatment on Amorphisable Cu Base Alloy

2010 ◽  
Vol 649 ◽  
pp. 101-106
Author(s):  
Mária Svéda ◽  
Dóra Janovszky ◽  
Kinga Tomolya ◽  
Jenő Sólyom ◽  
Zoltán Kálazi ◽  
...  
Keyword(s):  
Surface Layer ◽  
Surface Treatment ◽  
Laser Cladding ◽  
Base Alloy ◽  
Laser Surface ◽  
Laser Alloying ◽  
Laser Surface Treatment ◽  
Ni Content ◽  
Wide Range ◽  
The Matrix

The aim of our research was to comparatively examine Ni content surface layers on amorphisable Cu base alloy produced by different laser surface treatments. Laser surface treatment (LST) techniques, such as laser surface melting, laser alloying and laser cladding, provide a wide range of interesting solutions for the production of wear and corrosion resistant surfaces. [1,2] With LST techniques, the surface can be: i) coated with a layer of another material by laser cladding, ii) the composition of the matrix can be modified by laser alloying. [3] Two kinds of laser surface treatment technologies were used. In the case of coating-melting technology a Ni content surface layer was first developed by galvanization, and then the Ni content layer was melted together with the matrix. In the case of powder blowing technology Ni3Al powder was blown into the layer melted by laser beam and Argon gas. LST was performed using an impulse mode Nd:YAG laser. The laser power and the interaction time were 2 kW and 20÷60 ms. The characterization of the surface layer microstructure was performed by XRD, scanning electron microscopy and microhardness measurements.

Sign in / Sign up

Export Citation Format

Share Document