金属腐蚀与防护英文

Metal corrosion and metal corrosion protection

Abstract: The metal material has high strength, excellent ductility and toughness, heat, cold,

may

be

casting,

forging,

stamping

and

welding,

but

also

good

electrical

conductivity,

thermal

conductivity

and

ferromagnetism,

therefore,

metal

corrosion

and

corrosion

of

materials

are

important. The corrosion phenomena and the mechanism of metal are complex, but we can take

measures to mitigate the corrosion rate of metallic materials by a reasonable selection of materials

and effective anti-corrosion for longer equipment life, reduce costs and improve labor productivity

are of great significance. This paper introduces the corrosion mechanism of metal materials, also

introduces several common principles of corrosion protection methods such as the formation of a

protective

layer,

electrochemical

protection

and

adds

corrosion

inhibitors,

in

the

end

introduces

their application and development in metal corrosion protection.

Key words: corrosion of metal corrosion

Metal material has a long history of engineering materials developed. In the early

Shang

Dynasty

bronzes

that

have

occurred,

the Warring

States

era

began

using

iron,

the

use of

aluminum and there has been a hundred years of history, even the development of titanium alloys

have been 60 years, with the evolution of human civilization, the metal material has been play an

important role in that whenever our lives, food, clothing, housing, transportation, are all reflected

in its traces everywhere.

1 Development of metallic materials

Although the face of 21st century human technology has advanced to the space age,

electronic information age, a variety of new materials such as polymer materials, semiconductor

materials,

optoelectronic

materials,

competing

in

the

metal

material

has

not

lose

its

charm,

whereas

in

the

computer,

program-controlled

and

material

support

of

science

and

technology,

metal and constantly develop new applications, is still filled with endless vitality. Materials such

as steel consumption from the post-war years, less than 200 million tons, with fast growth to the

current

more

than

700

million

tons,

second

only

to

the

second

largest

amount

of

concrete

construction

materials,

and

aluminum,

magnesium,

titanium

because

of

its

light

metal

Some

features,

a

new

electronic

information

industry

in

the

structure

of

materials,

for

chassis

components, and support.

Although the manufacture of light metal applications and long, but not directly in

the emerging industry are significant concerns, until the mid-80s of the 20th century, Europe and

the United States hope that the DPRK lightweight automotive industry development, only being

the application of light metal. Light metal alloy for consistent energy savings, reduce air pollution,

renewable

and

recyclable

system

for

environmental

protection

demands,

it

has

become

an

important and has been used in actual products, today's fast product replacement, product cycles

and a significant increase in waste products .

Countries

in

the

world

are

set

to

relevant

environmental

laws,

requiring

manufacturers

to

recall

products

scrapped.

Most

of

light

metal

with

the

advantages

of

easily

recyclable, in addition to refining technology continues to improve, greatly increased the recovery

efficiency

and

use

resources

more

fully

achieve

the

purpose.

Aluminum

alloy

development

has

been more than 100 years, so a very wide range of applications, an important basic material for a

scale second only to iron and steel industry, much larger than magnesium alloy, titanium and other

structural materials and engineering plastics industry. Now, in addition to the aviation industry, the