Research Article:

عمار رزاق حسن
قسم هندسة المواد/كلية الهندسة/جامعة الكوفة

Email address: ammarr.alshemary@uokufa.edu.iq

ABSTRACT

In this research was conducted thermal coating process to follow flame spray
technology through the use of gaseous mixture consisting of oxygen and acetylene
for the purpose of obtaining the surface layer of nickel plating – Aluminum
(metco450) on the surface of medium carbon steel type (AISI 1050). Provide an
increase in the mechanical properties of the surface of the metal guide and
compensate for the missing parts of the surface as a result of the process of wear
and tear. Was conducted in three successive phases, first phase involved the
preparation of models and to create the basis for this surface models as well as the
preparation of powder coating and analyze the chemical components of the
models and powder coating. While the second phase involved the implementation
of the coating process (nickel – aluminum) using a flame spray coating process
was carried out in different ways for each model through a change in the granular
size of the powder coating. The third phase of the research included the testing of
standard tests check adhesion, examination of roughness, check the wear and tear
and check the hardness of the coating as well as microscopic examination of the
paint and the surface layer basis. Where results showed that increasing the size
particleboard from (25μm) to (75μm) led to increased wear rate and a decrease in
adhesion coating layer, as noted increased roughness layer coatings increase size
particleboard for powder coating, also led to increase size particleboard for
powder coating to a decrease in hardness layer paint.

Keywords:flame spraying, coating nickel- aluminum, medium carbon steel, particle size

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