How do Solid Lubricants like MoS2, Graphite and h-BN work?
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- Опубліковано 25 сер 2024
- Solid lubricants are pretty common in greases and lubricants. But increasingly, they're being used on their own as surface coatings. In this introductory video we look at the basic principle behind them, and a couple of the factors that determine which to select.
"Lubrication Explained"!? 🤯This is so my kind of channel! 😉Where have you been a month ago, when I researched white lithium grease and PTFE sprays, for use on my rather expensive but squeaking office chair? 😄I never thought there is such a thing as a UA-cam channel dedicated to something as unappreciated and uninteresting as lubrication. I mean from a technical and scientific point of view. Thank you UA-cam algorithm for finding this gem for me! 🥰I see you have a video on PTFE specifically. I will watch that next. I think most people don't appreciate lubricants until something in their lives begins to squeak or squeal (literally and figuratively).
@ Lubrication Explained.I would be grateful if you would do a piece on two cycle oils.There seems to be more than a few misconceptions especially around the subject of flash point and its relationship to complete combustion of the oil. Thanks and Greetings from Canada.
Great suggestion!
@ Lubrication explained
Plus one for a deep dive into 2 stroke oils specifically for motorcycles.
An explanation of the importance of the oil flash point would be great.
Would love to be corrected if I'm wrong, but as I understand it if you run a fuel mix of 50:1, then you obviously have two components that make up the fuel (Petrol and oil)
If the oil flash point is too high and you get incomplete combustion in the cylinder, then 2% of the 'fuel' is not doing useful work in the combustion chamber.
I've looked at the SDS of most of the name brand dirt bike oils, all synthetic or at least part synthetic, and they range in flash point from 89°C up to 253°C.
Why such a big range, what would be the advantage of the high or low temperature and which company is correct 🤷
Keep up the good work.
best I tried is motul 2 cycle
@@shanepipkin4041
Motul is the one with the highest flash point. (274°C road mix, 253° for Off Road)
It is terrible for cold start spark plug fouling, unless the jetting is absolutely perfect, good for wide open throttle use.
There are several quality brands with big names that have flash points under 100°C that provide long engine life, good cold starting and less susceptible to 'off' jetting.
This is why I'd like Rafe to comment.
I use powdered graphite on the gimbals of my hobby radio controller and always wondered, great explanation and visuals 👍
Thanks , Looking forward to your explanation for tungsten or wolfarm found in liqui Moly Molygen additive.
Great suggestion!
Great video and very clear explanation. Tranks a lot!
You are welcome!
I remember Arco graphite motor oil back in the 70s, I think. I used to buy it. It hasn't been sold in ages. Don't know whether it was a failed lubricant or failed marketing. People didn't like putting black motor oil in their crankcases.
I have two quarts of that on the shelf in my garage. A friend of mine was cleaning a lady's late husband's garage out and gave me all the chemicals that were in there. They're too old to use except in maybe in an old lawn mower or something in that realm. I had three quarts but I put one in an old welder because it's all I had at the time. I remember it being like a dark metallic gray color.
@@johndunawayiii4663 I think project farm ran a test on it, and that it's not as good as modern additives.
here we go, ua-cam.com/video/aqz5330Srdc/v-deo.html
very excellent explanation
Fascinating, I'm intrigued by sub 1 micron Tungsten Disulphide as an oil additive and in grease too. Curious about Carbon too, graphite being very common, has there been any graphene research? It would be useful to look at solid lubricants as spray on (aerosol cans) I.e. PTFE, Molybdenium etc. Dry lubricants. Fantastic content.
There is a decent amount of research going into graphene at the moment. Some of it regards graphene as a solid additive, some of it looking at how to disperse it in liquid lubricants. It's an interesting area of research.
Personally I think the cost of graphene might need to come down somewhat to be competitive with other additives, but I'm not deeply embedded in that world, so maybe the cost to performance ratio is actually pretty good!
Graphite consists of layers of graphene.
Hi Rafe, im interested in how to make your own diy greases for bicycle ball bearings. If you have a standard lithium grease, what additives in which quantities would be advisable. I think of graphite ptfe ws2 mos2 hbn. I switched from unknown standard grease to MoS2 grease and the bearings are lasting 100 times longer.
Also what to put into the wax for the chain, ozcycle gives advice how to chainwax. Graphite tends to increase wear in specific circumstances like dry air or not enough pressure. Mos2 also needs enough pressure. These two i would not use on chains, or would you? PTFE and WS2 in 0,0X% quantities are tested by me, it works great.
I ask myself if there are field tests of these kinds of stuff, because science has to proof nowadays things which could be tested. Tested with too small ball bearings on a big testmachine, fill up the ball bearings with different formulas and look when they fail. German resources for graphite are: " Graphitschmierung: Auch im Wälzlager
03. November 2022" " Warum schmiert Graphit so gut? 27.05.2004 "
Very interesting, looking forward to ws2 ptfe. I would prefer transparent ingredient list, liqui does give an technical information about the grease like KPFK-20, sometimes you only get sells blabla. I think those oil additives for motor oil do more harm than any good. But Oil Spill Stop Additive worked for me in the past.
Would you advice against adding hbn powder to the crankcase or would it help the motor oil?
h-BN is in Archoil 9100. Will try it soon.
You are back 🤟
I Use BananaWax Bike Bearing Moly Grease Wax.
It Contains Siloxane, Mos2, Graphite, Mineral Oil, & Wax My Bearings Run Ultra Smooth.
Is there anything else you would recommend??
Hello!! So MoS2 is not recommended to use in a subsea operation, is it correct? Salt water can cause even more issues? What would be the consequences?
Hello, I have a question about Moly (MoS2 if I understand this correctly). I would like to use this as a surface layer in vacuum? Is this possible? I spent a few day already looking for it online and can't find any information.
What are the limitations and disadvantages of Bentonite Greases?
Thank u for your great channel and hard work. I've left questions on several different topics. Sorry, but this stuff is so interesting and I'm an oil nerd and an auto tech. So what is the difference between boron oxide and boron nitride as it applies to engine oil. Which one would u expect to have a better anti wear, polar effect? And the boron that we may see in Mobil 1 fsx2 sp rated oils.... It's pretty high.... 250-300 ppm..... What type of boron is that? Is it from the esters since that a group 4 and 5 oil? But either way, is it effective like the 'nitride'?......Ceratec and some others use 'oxide' whereas Wagner air tec micro ceramic uses nitride. I know I asked several questions but I am very interested in the answers and very appreciative of u. Thanks so much!
Thank you for this. What would be the best for chain wax? I was thinking of a PTFE and Molly mix for my paraffin wax any suggestions please?
Knew about graphite and moisture but not moly and moisture. Certainly change some of my usage.
This reason Liqui moly is the best ever ❤
most of liqui molly products do not contain MOS at all
Yeah very interesting. So "Liqui" moly refers to the liquid, rather than solid form of molybdenum, called molybdenum dithiocarbamate rather than MoS2. This is the kind of moly that you typically see in racing oils and needs to be oil soluble so that oil filters don't remove it.
Make video about Graphene used as an oil additive, thank you! 🎉❤
Graphite is multiple sheets of graphene.
In bearings of 2% nano h-BN resulted in a 46% lower value of the coefficient of friction than the base grease
Dont forget wax, it is superior on bicycle chains.
The audio is choppy, it gets faint in between your sentences. Not sure if it's how you spoke or how your mic picked it up.. thanks for the video nonetheless
Get to know Armite Lubricants
What about ALMASOL?or MEGALITE?😁
❤😮😮😅
This video feels like someone's messing with me.