Cars & Corrosion: 6 Testing Methods & Protection

[dorkydoorknob]

Here's some questions I need help with...
Its about Cars & Corrosion

1. Name six ways that corrosion was tested on cars.
2. State two reasons that corrosion is not benificial.
3. How does ventilation stop corrosion?
4. In what way does mud contribute to corrosion?
5. What are the two metals in:
a) the gas (petrol) cap
b) light fixture
6) List five protective measures taken by Austin rover to protect against corrosion.
And I got the other questions. So if u could even ehlp me with just one..that'd b such a help.thanks so much

 

[Astronuc]

Please show your work, or what you have discovered so far.

Corrosion generally involves a metal and an electrolyte, most often water. In parts of the country, salt is put the roads during winter to help melt the ice and snow, but this then leads to salt water corrosion of vehicles using the roads.

Around coastlines, salt from the ocean is also a problem.

Cars use several different alloys, but steels are/have been common.

Mud simply provides for collection of moisture (moisture retention) and contaminants like salt.

Ventilation permits a 'dry' environment, i.e. no electrolyte, which will slow, stop (or otherwise retard) the corrosion process.

Browse at www.sae.org[/url] and [url]www.nace.org[/URL] for corrosion topics, or google on "automobile","corrosion".

 

[Blueshift5]

1. Six ways that corrosion is tested on cars include:
a) Salt spray testing: exposing the car to salt water mist to simulate the effects of road salt on the car's metal components.
b) Humidity testing: exposing the car to high levels of humidity to test for corrosion resistance.
c) Corrosion coupon testing: placing metal coupons in different areas of the car and measuring their corrosion rates over time.
d) Electrochemical testing: using an electrochemical cell to simulate the corrosive environment of a car.
e) Accelerated weathering testing: subjecting the car to extreme weather conditions, such as UV exposure and temperature changes, to test for corrosion resistance.
f) Water immersion testing: submerging the car in water to test for corrosion in wet environments.

2. Corrosion is not beneficial for several reasons:
a) It can weaken the structural integrity of a car, making it unsafe to drive.
b) It can lead to expensive repairs and replacements of corroded components.
c) It can decrease the resale value of a car.
d) It can affect the overall performance and efficiency of a car.

3. Ventilation helps to stop corrosion by allowing moisture and condensation to escape from the car. When moisture is trapped in a closed environment, it can lead to corrosion of metal components.

4. Mud contributes to corrosion in two ways:
a) It can contain corrosive substances, such as salt, which can accelerate the corrosion process.
b) It can trap moisture against the car's metal components, leading to corrosion.

5. a) The gas (petrol) cap is typically made of plastic and metal, with the metal component being either aluminum or steel.
b) The light fixture may contain a variety of metals, depending on the specific components and design, but common metals used in light fixtures include aluminum, steel, and copper.

6. Some protective measures taken by Austin Rover to protect against corrosion include:
a) Galvanizing or coating the car's metal components with a protective layer to prevent direct contact with corrosive substances.
b) Using corrosion-resistant materials, such as stainless steel, in the car's construction.
c) Applying rust inhibitors or sealants to vulnerable areas of the car.
d) Regular maintenance and cleaning to remove any corrosive substances or moisture.
e) Designing the car with proper drainage and ventilation systems to prevent moisture buildup.