Metals & Ceramics: Crash Course Engineering #19

Today we’ll explore more about two of the three main types of materials that we use as engineers: metals and ceramics. We’ll discuss properties of metals, alloys, ceramics, clay, cement, and glass-ceramic materials. We’ll also look at the applications of our materials with microelectromechanical systems and accelerometers.

Correction: aluminum oxide is not rust; rust refers only to iron oxide. Aluminum does corrode and the process by which it corrodes has been referred to as 'rusting', even if it is technically not rusting unless the material is iron or steel.

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[crashcourse]

Whoops! Small correction. Thanks for pointing out the error, everyone! Here's a note from our consultant...

"Correction: aluminum oxide is not rust; rust refers only to iron oxide. Aluminum does corrode and the process by which it corrodes has been referred to as 'rusting', even if it is technically not rusting unless the material is iron or steel."

Thanks!

Nick J.

[erikziak]

You actually need to cool fresh cement when it is hardening, as it releases heat. Usually spraying water over it to keep it wet is enough, but in super thick structures, like dams, you need active cooling, like pipes placed inside, which run cold water to absorb and transfer the heat outside. When the cement is cured, the pipes remain inside, forming a steel reinforcement, which is also useful.

[TeaDrinker]

I don't even study engineering but this was an amazing video. This is the definition of great education, making people interested in things they hadn't been interested in before by explaining it clearly.

[segychan]

was that a primitive technology shoutout yo

[damontallen]

Technical note: Alumumin oxide is commonly used in sandpaper and rust has the connotation of Iron oxide typically.

[learninglockit]

Great research on this project. Such an inspiration.

[XSpImmaLion]

Primitive Technology referenced! Thumbs up!

[jiecheng]

this is a video with inspiration for a budding engineer, the organized narrative of knowledge makes it easy to remember and interesting.

[Paresh]

I like ur videos very much it solve many of my problems tysm for help i will be with ur channel forever it feel good to learn from this it's a very good experience

[KnaveMurdok]

GLASS!
METAL!
CERAMIC!
STONE!

CILIT! BAAANNGGG!

CLEANS UP THE LOT!

[rockclimbing]

Another brilliant video could you guys explain welding the different types of welding thank you so much

[junkjunkloot]

Omg. Omg omg omg. Are you folks going to do textiles?! That's a topic I'd love to see covered.

[FalbertForester]

Good episode, was a pleasure to watch. It is at a bit of a breakneck speed, but I'm sure that's to keep the time within reasonable limits. When "two out of three materials" was mentioned, I guessed that the third would be "liquids", not polymers.

[jagadeeshvikramc]

I liked the crash course videos very much. The video is so helpful for the Students to understand clearly. I shared many to watch and to subscribe. Well done So Good. 👌👍❤️💐🙏

[jacobfranco]

Cement and concrete are two different things. Portland cement is a component of concrete and gets added with other compounds. Concrete also gets certain additives to prevent it from cracking.

[detritus]

Awesome information. Her eyes are enchanting to boot.

[unleashingpotential-psycho]

That is cool that cement can set at room temperature. It would be interesting though if we needed to bring out a flamethrower to set the ceramic.

[coalsauce]

omg the primitive technology reference <3

[hindolbose]

make one about metallurgical and materials engineering

[lukesteele]

Could the addition of Beryllium to Spring Steel make it lighter, stronger and more durable?