Anodizing (Or the beauty of corrosion)
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- เผยแพร่เมื่อ 28 พ.ค. 2012
- Bill describes how metals like aluminum and titanium are made resistant to corrosion by growing an oxide layer into the metals. These is the same process used on many Apple products. This video is based on a chapter in the book Eight Amazing Engineering Stories; learn more at www.engineerguy.com/elements.
- วิทยาศาสตร์และเทคโนโลยี
"Don't do this at home"
Me: "Hmmm convince me not to"
"This can be lethal"
Me: "Hmmmm how much lethal are we talking"
You're welcome for the 69th like. Also, nice comment.
@@thomascrouson6085 nice 😏
My first job circa 1982 was in an architectural metals factory where they anodized aluminum parts for buildings. Popular because the end product was light, easy to shape and provided excellent protection from the elements. If I walk around some part of London now I can still see parts we made on places like the Chelsea Harbour development.
all rust is oxidation but not all oxidation is rust
dion759 i thought rust was a bunch of naked people running around killing eachother
+Sponge Boob also an unfinished game
While it is true that rust is the oxide of iron, you need to remember that Bill is talking to the masses. The masses are not into the finer points of corrosion. Bill is just trying to get a concept across in a short video. So, try to cut him a little slack and let that slide even though it grates on your more precise tendencies.
Yes, most people don't know what oxidation is, but everyone knows what rust is. This could cause future confusion with people that are really trying to learn how things work. It would've been better to say "it's similar to rust" or "sort of like rust". This isn't a criticism, I love Bill's videos.
Actually, that’s not quite true guys. While the term is mostly used for iron and steel corrosion, rust is often used to describe similar action on other metal surfaces. Look it up, and don’t make assumptions.
his red shirt was actually made from anodized aluminium. true story
dont worry, I believe you, after I saw a rich indian make a golden shirt after gold metal threads, it's possible to create anodized shirts
Indeed, his shirt is actually red [ product ]
It is not red, it reflects red.
omg XD
So we're both of his prosthetic eyes
The music makes me want to play the sims
Good one! The Sims had such fitting music.
woah
You are sooo right! And I thought I was the only one.
As soon as the video started, I started thinking, "Hmm, I haven't played Sims for some time." (Starting the Sims...)
this was a fun watch, when I was roughly 20-21 I used to work in an aluminum anodizing factory and it was one of the few jobs I would go out of my way to learn the science behind because anodizing the multiple ranges of colors and depths we could do really intrigued me. hot dangerous work, but scientifically amazing!
I live on a sailboat. After paint failed on some aluminum fittings on the boat, a rigger friend recommended that I black anodize the parts which I did. When I brought the anodized parts to the boatyard, an old timer friend recommended that I coat the parts with lanolin (sheep fat) which I did. The lanolin seals the pores and keeps saltwater out. The anodizing protects the aluminum. More lanolin is re-applied when the parts look a little chalky. It's a little pricey but the anodizers usually charge per batch, not part, so plan accordingly.
...boat stuff...you could try 'hard anodizing'....very hard and only available in black....but quite a bit more durable than the regular anodizing.
I agree. My goal is less maintenance.
have your pieces powdercoated or ceramic coated
Also, stay away from black anodizing as that soaks up the most UV and will ultimately turn brow (unless of course you desire this)...
"It's a little pricey but the anodizers"
And there ends your comment. TH-cam... is it _so hard_ so display a few words or what? How can they fail at such simple tasks like showing comments?
These videos keep getting better and better! I just tell me friends to watch these and they feel smarter! Great job!
didnt expect you here
IMAGINE HAVING FRIENDS... yeah... imagine :(
I'd say you met the standard! You never cease to BLOW MY MIND! Your content is what Discovery, TLC and History USED to be! THANK YOU!
Yet another amazing video Bill. Thank you very much for all of your work! I look forward to my book arriving tomorrow!
Which is why the AR rifles introduced in the mid 50's by Armalite were so advanced. Armalite used manufacturing advances it took from it's parent company, Fairchild aircraft. The anodized aluminum upper receiver is harder than the steel bolt carrier that reciprocates inside it. It's the steel carrier that wears out first.
Cool! I'll have to take measurements on mine.
Except that exactly what makes the rifle a very expensive and ineffective piece of toy. Its nice for sport shooters and consumers, but terrible for the military which requires mass production of cheap yet durable tools.
robert karas No, not really. The AR-15 can be cheap if you want a cheap one. The anodized aluminium receiver isn't the source of failures or low accuracy in cheap rifles, or in expensive rifles, or in any rifles. The smaller parts that require high precision tools to manufacture typically fail long before the receiver. From an engineering standpoint, the AR-15's receiver is excellent: it's durable because of the anodization process, rigid because it has relatively thick walls and still lightweight because it's made from aluminium.
Smith & Wesson made model 39 semi auto with an anodized frame around 1950.
robert karas yeah, so terrible the most effective and powerful military in the world has been using it for what, 50+ years?
As an interesting note: Type III aluminum anodizing (sometimes called "hard coat") has a surface hardness similar to steel. With Type III hardcoat, you can have the weight, rust-free nature, and cost of aluminum matched with the hardness of steel. While this doesn't have much use from a structure perspective, it works great for sliding pieces as the finish will not wear off easily like bare aluminum or Type II anodizing (standard anodizing) or show scratches from normal use.
You carry on where popular TV shows came to a halt almost 20 years ago, replacing things like this with cheap and revolting persuasion techniques like ridiculously deep voices, extatic screaming and camera shaking describing what is essentially bad science.
This is awesome. Keep up the good work.
I will not lie to you Bill.
Sometimes I click for the music.
After seeing the last video he released, I bought his book, and really enjoyed it. Recommend others do the same, many more interesting stories, and things to learn about our everyday life.
I love those videos. Wish there were more of them coming.
Just subscribed last night, and a new video comes out?
I love this channel so much.. Mainly the host who happens to somehow make everything understandable and entertaining. lol
Just bought your book! Thank you for being awesome
- A perpetually curious software engineer
I have always loved anodizing- racing BMX bicycles as a kid the coolest looking parts were anodized. I've always wondered how the process was completed and have even tried to find other videos to explain so I could try to accomplish myself. This video is fantastic. Thanks for posting! Don't know if I can pull the process off myself though.
Throw a BMX frame into the bathtub with attached wires, stand back and connect it to the mains. What could go wrong.
As a chemist, I really didn't expect to learn a whole lot when I clicked on your video. I was wrong!!!! :) Thanks so much. It's so rare to find videos that talk about science in such a concise yet useful way.
Exceptional video. it told me exactly what I wanted to know regarding WHAT anodizing was, but what to expect. Thanks for for such a complete, and easy to understand explanation!
Why was I recommended this 8 years later? Either way, good video.
because itbis perennial
One of the best videos you guys have done so far, and I MUST have that book! ^.^
I wish I had known about this channel sooner. These are great.
I've noticed anodizing is used in cookware. I'd love to see Bill present the different surface engineering of cooking materials to explain their different properties.
😮
I went on a field trip to a plant that anodized aluminium. The plant was very professional to the point that everything was clean, so clean that their vats of acid was crystal clear to the bottom of their four foot depth. It was like looking at pools of clear, cold water, and to my dismay I felt an urge to put my hand in there, luckily my fore brain kept control and I took the idea of working at such a place off the list.
I'm a teacher, my students text was brief on electrochemical processes. This is an excellent resource. Thank you.
These videos change the way I look at the world. I look forward to many many more in the future.
Many, many years ago, I worked at a company that made photosensitive plates for printers. They took huge reels of aluminium of varying thickness, pulled them through a 30 yard long bath and used huge currents to anodize the material. Controling the speed and current controlled the thickness of the oxide layer. It was then coated with a photo sensative layer. After exposure and developing the plates, the pores that were not closed by the remaining photo sensative layer take up and release the ink on the paper. Clever stuff.
So that's the deal with all this "anodized' craze - thanks for the very good explanation!
Been 11 years since released, the video still keeps me satisfied with the accurate information I wanted
Excellent video!
Awesome work...something to learn from every video..keep up the good work.
Short, sweet, and informative! Thanks!
Oh another great video, Just about to read this chapter tonight.
Beautiful Video... Thank you very much for posting, would like to have that book.
Just one of the most awesome channel on youtube, KEEP UP !! :)
1:43 This is also the how pearlescent pigments are made. A layer of TO2 is deposited on very small mica (or borosilicate) platelets so the color is produced is by the thickness of the layer. TO2 exists in two crystal types, Anatase and Rutile and they give different results.
The engineerguy would make an outstanding teacher. Great video's. I have my kids watch them.
I'm pretty sure he's a professor at a college.
I absolutely love your channel
Really good video. Thank you for it!
Great explanation!
Excellent explanation.
Excellent explanation
Love these videos. Too bad you took out the humor of the first year - that made the videos not only informative, but also entertaining.
This is really cool. You are simultaneously educating us on a fascinating topic, while earning a lot of free advertising for your book. I was forwarded here from a tech blog, who I doubt has any affiliation with you.
Fantastic video, very interesting.
Estupendo. Thanks again for the imparted knowledge.
Appreciate that informative presentation 👍
The book is really nicely written, you should check it out. Of course there is an e-book version if you don't like dead tree.
I'm glad i found this TH-cam channel :]
Wish I had this chap as my science teacher ... mine just shouted at me a lot and made me cry!
Very cool. Love your videos
I want more vids from you love this
I'll definitely be buying the book!
Wonderful red anodizing job on your shirt!
you know this is an old video when apple is being called durable
Thanks for this.
Good Job.!
I love the way this man speaks, often modern science videos have a "whhoaaduude" tone to them and don't really get the point. His videos are quite the long due throw back to the informative, straight forward, information videos you see from the 1940s-1970s. Really refreshing.
That is the ethos I am aiming for. Of course I fee up on ascent of man, cosmos etc. I have never been too interested in doing US TV in its current incarnation: it isn't designed for anyone to pay attention to!
engineerguy Wow, and you're active in the comments. You're doing something that's very needed and in short supply, I'm buying your book as soon as I get paid. Thank you for all thay you do :)
Very, very good, thanks!
Why does this guy remind me of Luke Skywalker?
+Brad M I am Luke Skywalker ... I cannot make enough money with voice overs for batsman cartoons so I have to make these videos too.
Hey engineerguy! hahah love the videos!
+Brad M thank you!
He killed his own father?
Because u prolly want to see him in a lightsaber fight against bill nye.
This is so brilliant
I remember learning about this in Electrochemistry. I remember telling my best friend about this fascination and she just dozed off! XD
Thanks for sharing this knowledge~ With you, this world is becoming a "brighter" place : )
YOUR BACK! :O
How does "boiling the aluminum in hot water" "seal" the layer? Glossing over that is bad form.
Hardens the resin in the dye. Causes oxidation of any flaws in the aluminum surface.
I never knew that. Awesome.
Coincidentally I will be working as an Anodizing intern for Apple this summer, cool stuff!
I sincerely miss these videos...
nice - well done
Creative video to understand engineering concepts
One thing that is interesting to note is that anodizing and alodining (a similar chromate conversion process) are the basis of corrosion resistance used on all aluminum aircraft.
Such a shame these talented guys don't post they awesome videos anymore
I will: see Engineerguy.com … just finished book, video series to go with it.
great explain thanks
WOW THIS VIDEO WAS SO GOOD I LEARNED SO MUCCH MY MIND IS BLOWN RIGHT NOW🤯🤯🤯🤯🤯!!!!!
Thanks, good stuff
Very interesting!
dig the video. please keep this up!
yer awesome dude. thanks for this video
I used to work at an plating company doing aluminum anodizing. There were two types of anodizing they did, soft and hardcoat. Two different processes. Only soft anodizing will accept the dyes. Hard anodizing would be either natural which are different shades of brown or dyed black. Bill explained it better than my former boss. Bill, do a hard anodize episode for your fans.
I remember black being the only option for hard anodizing.
I would love to meet this guy, he seems so interesting and knowledgable. I would love to meet him.
Great video. It would be nice to hear a bit about the cost of the process though, but i guess that's outside the scope of this channel.
"durable" and hinges attach to paper-thin sheet of aluminum instead to rigid case.
Dear Bill, your video is very fascinating and easy to understand for students as well as professors. I find it yesterday and going to show my student today in the course of surface engineering at UQAC. I am running a project on anodization of aluminum but use cathode in the same acidic bath. However, in your video I did not understand where did you put the cathode? Secondly, can you find a condition (playing with thickness as well as metals) that your anodized layer hence the whole material become invisible? ha ha ha!!!
So putting it very basically, ignoring specific steps and materials, you run a current through the metal you want anodized, which 'primes' the metal with a coating that is ready to accept a dye to intensify the color and finally, the finish is sealed by boiling the piece to lock in that color?
I don't know why, but 20 years ago I missed a program on Discovery Channel, and never tried to find out, but it kept gnawing at me to figure out why things like carabiners came in various colors. Now, 20 years later, I can sleep well knowing how it's done.
Bless you Bill - my sanity is partially saved! 🙏
this guy is amazing
amazing
Nice video but a small correction: with aluminum the current doesn’t “push” into the aluminum to make channels, the process is actually chemical. What’s missing here is that you anodize in an acid, typically diluted sulfuric acid. The anodizing process is a tug of war between the acid that keeps digging holes and the current that keeps forming oxide. Where the acid is winning, you get the long empty tubes, where the current is winning, you get the oxide walls. Without enough acid, you never get past the nanometer thin barrier layer. Without enough current, the acid eats away all the oxide. Keeping everything balanced is the hard part.
Love your channel!
thank you
i love these videos :)
I like the music. It makes for an intelligent kind of feel. :J
Not all aluminum parts should anodized, If a part is under cyclical stress it may fail in less time due to the affect on the surface. micro fractures will occur from the the altered surface. Thinking of aircraft components.
And boats. Yes it's true on thin aluminium, not on thick pieces as the ratio layer thickness on piece thickness gets smaller and amaller. The main problem is how to control the galvanic effet on a big complex piece to get a uniform thickness of anodization. And secondary problem cost and lack of durability of a soft anodization.
How thin would be not ok
@@christopheryee4850 one third of an inch
awesome
I like this guy.
=) Had no idea what Anodizing was.. now i do. Awesome process.
Awesome i always wondered how they anodized aluminium. So you mentioned the two wave lengths of light cancel out. Ive always wondered if it would be possible to totally phase out 2 light beams. lol i wonder...
So since certain colors are a thicker layer of oxide, those colors are more durable than the others?
Telling the whole history of aluminium would be interesting too!
i love these