Issue 14

V. Di Cocco et ime and coa Ti contents

alii, Frattura ed tings chemic by means o

Integrità Strutt al composit f bending te

urale, 14 (2010) ions on dam sts and LOM

52-63; DOI: 10 aging microm (Light Opt

.3221/IGF-ESIS.

14.06

In inv obs

this work, th estigated con ervations.

e influence sidering diff

of dipping t erent Sn and

echanisms ical Microsco

was pe)

Fig

ure 1 : Zn coat

ing section: in

termetallic pha

ses.

M A

TERIAL AN

D EXPERIM

ENTAL PRO

CEDURES

hree dif were pe fifteen c e following p eous solutio ZnCl 2 and 2 ped in the zin

ferent bath c rformed at 4 oating, 3 mm rocedure wa n 20% H 2 SO 20 g/l NH 4 c bath. All g C 0.090

ompositions 60°C ± 2 °C thick comm s used for co 4 at 50°C for Cl at environ alvanized pla Si 0.167 T

were consid , considering ercial ipersan ating the pla 10 minutes, ment tempe tes were air c Mn 0.540 able 1 : Steel c

ered: pure Z five differen delin carbon tes. They we washed in fre rature for 2 ooled. P 0.010 hemical comp

n, Zn + 3 % t dipping tim steel plates w re degreased sh water, flu minutes and

wt Sn, Zn es: 15, 60, 1 ere used (Ta and rinsed w xed in an aqu dried for 10

+ 0.5 %wt T 80, 360 and b. 1). ith alcohol a eous solutio minutes at

i. Zinc coat 900 s. For all nd pickled in n containing 100°C and t

ings the an 280 hen

Th aqu g/l dip

S 0.004 osition (wt %

Al 0.051

Fe Bal.

).

(a) ping configura

(b) ng position; b

(c) bending mom

Figure 2 : D

ifferent clam

tions: a) Starti

) Pure applied

ent; c) 30° po

sition [8,9].

53