"Rust and Protection of Steel" Metal PPT Free Courseware

Description

"Corrosion and Protection of Steel" free metal PPT courseware, 32 pages in total.

Objectives of this section

1. Through experiments, understand the conditions that cause steel to rust.

2. Ability to propose methods to slow down steel corrosion based on rusting conditions.

3. Know the dangers of scrap metal and understand the significance of recycling scrap metal.

4. Master the design method of "controlled experiments" through exploring the corrosion conditions of steel.

rusty condition

Ask questions, create conjectures

What factors do you think are related to steel corrosion?

Design experimental plan

Design a controlled experiment to verify whether the rust of steel is related to water.

Instruments and medicines: test tubes, rubber stoppers, iron nails, water

Experimental results

Iron rust is related to water vapor and oxygen.

The composition of steel, the temperature, humidity, and acidity and alkalinity of the environment are all factors that affect the corrosion of steel.

How to prevent rust

Anti-rust methods

1. Do a good job of "superficial articles"

1. Keep the surface of iron products clean and dry;

2. Apply a protective layer (oil, paint, covering enamel, plastic) on the surface of iron products;

3. Plating a layer of metal or "baking blue" or other methods to form a dense protective layer;

2. Increase “connotation”

Change the internal composition and structure (such as making an alloy)

Scrap metal recycling

The amount of steel scrapped due to corrosion around the world every year is equivalent to 30% of annual production.

One button battery,

Contaminate 600m3 water

Equivalent to a person’s lifetime water consumption

feedback exercise

1. Among the following areas, metals are relatively easy to rust ( )

A. Shanghai b． Qingdao c. Turpan Basin D. Hainan Island

2. Which of the following anti-rust measures for household steel items is ineffective ( )

A. Sprinkle salt water on the kitchen knife B. Paint the iron fence

C. Apply oil to the bicycle chain. D. Keep the surface of the iron pot dry.

Keywords: Free download of the complete PPT courseware of the ninth grade of Chemistry of the May 4th System of Lujiao Edition, download of the corrosion and protection of steel PPT, download of metal PPT, .PPT format;

For more information about the "Corrosion and Protection of Metal and Steel" PPT courseware, please click on the "Corrosion and Protection of Metal PPT and Steel" PPT tab.

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"Corrosion and Protection of Steel" Metal PPT Teaching Courseware:

"Corrosion and Protection of Steel" metal PPT teaching courseware, 20 pages in total. Learning objectives 1. Understand the factors that cause steel corrosion and methods to slow down steel corrosion; 2. Understand the environmental pollution caused by scrap metal and the importance of recycling scrap metal in protecting the environment and metal resources..

"Rust and Protection of Steel" metal PPT download:

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Update Time: 2024-10-05

This template belongs to Chemistry courseware Lu Jiao Edition Ninth Grade Chemistry Volume 2 industry PPT template

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