2012 - Europe Direct Iasi

EUROINVENT 2012
methane gas introduced as CH4/Ar mixture, in liquid alloy
bath is realized with equipment compose by a closed
chamber melting reaction, with lid-cooled with water and
connections for circulation of cooling water and the intake
and discharge of protection gas and the resulting gases. In
this chamber is inserted a graphite crucible with dense
high height, at the bottom with a jet connection of gas
mixture using reagent a number of nozzles with 1 mm
diameter.
6.5.
Title Laser Irradiation Techniques
Authors Hebatelrahman Ahmed Hafiz Mustafa El Sabagh
Institution Housing & Building National Research Center, Egypt
Patent no. 24014 Egypt
Description
The main idea of the new method depends on the the laser
photon energy which is absorbed by the samples and cause
microstructure changes which improve the mechanical
properties without any significant changes in chemical
composition.
Applications and methods of exploitation
* Improve the mechanical properties of the alloys such as
hardness and wear.
*Extends the life time of the alloys and makes them
suitable for many applications such as bone replacement
parts, dental elements, space applications, industrial spare
parts and Increase the efficiency of surgical instruments.
Applications require long periods of operation and
maintain the dimensions.
Marine applications and the parts are prone to erosion
Properties of the treated alloys: Improved hardness by
36% (the hardness improved from 318 MHV to 437
MHV) – wear is improved by 99.8%- the particle size
change from 10 to 7.5 ASTM - thickness of the treated
part is only 250 nm.
116