**Author details**

tional experiment was conducted with the levels of the process parameters (A3, B2, C3, and D2), resulting from the optimization process. Two wear rate values were obtained (4.4E-07 kg/ s and 4.1E-07 kg/s), and the average of these values was found to be 4.25E-07 kg/s with an

O3 coating as

ver, agglome

he process p

arameters (A

A3, B2, C3, a

and D2), res

sulting

7 kg/s),

1.5 HV.

absence

the

and 4.1E-07

rdness of 50

evealed the a

re present in

.4E-07 kg/s

n average har

igure 8(a) re

particles wer

obtained (4.

kg/s with an

s shown in Fi

erate Al2O3 p

values were

be 4.25E-07 k

An SEM micrograph of the optimized Ni/Al2O3 coating as shown in Figure 8(a) revealed the absence of surface defects and interfacial voids; however, agglomerate Al2O3 particles were

average hardness of 501.5 HV.

t was conduc

200 Electrodeposition of Composite Materials

cted with the

e levels of th

o wear rate v

as found to b

zed Ni/Al2O

oids; howev

process. Tw

se values wa

of the optimi

interfacial v

**Al2O3 p**

**particle**

ptimization p

erage of thes

micrograph o

defects and i

present in the coating.

experiment

from the op

and the ave

An SEM m

of surface d

coating.

F

igure 8. (a) S

(a)

Surface of N

**Figure 8.** (a) Surface of Ni/Al2O3 coating and (b) XRD spectrum of coated samples.

Ni/Al2O3 coat

ting and (b)

XRD spectr

(b)

rum of coate

ed samples.

electrodepo

tion of nano-

24

sited


tilization of

ical applicat

uction and ut

the tribologi

in the produ

In this chapter, the recent development in the production and utilization of electrodeposited nano-composite coatings was examined. It was found that the tribological application of nanocomposite coatings was strongly dependent on their compositional, morphological, and structural characteristics. According to the literature, these properties are directly related to the preparation method and deposition conditions such as current density, substrate, pH, ion concentration, size and quantity of nano-particles, and agitation frequency. Thus, the optimi‐ zation of the parametric setting is of critical importance to assess the wear resistance of the

s found that

The results demonstrated that Taguchi DOEs can be effectively used to optimize the electro‐ deposition process; however, due to material limitations the experiment was restricted to the use of only two samples per condition. Increasing the temperature and particle concentration caused a reduction in the wear rate of the coating. The results also show that increasing temperature to 50°C caused a reduction in the wear rate of the coatings deposited. Stir rate is

development

mined. It was

the parameter having the least effect on the wear rate of the coatings.

the recent d

ngs was exam

**4. Conclu**

**4. Conclusion**

nano-comp

coating.

In t

**usion** 

this chapter,

posite coatin

Kavian O. Cooke

Address all correspondence to: kavian\_cooke@yahoo.com

Department of Mechanical Engineering, University of Technology, Jamaica, Kingston, Jamaica
