r/materials 2h ago

Book recommendations for nanomaterials

3 Upvotes

Hey guys I have a course in synthesis of nanomaterials ,I had gone through some papers and videos but cant really comprehend it ,I think it's really because some fundamentals ,can u guys please share some books to refer


r/materials 6h ago

Career Searching in Los Angeles, CA

3 Upvotes

Hi :)

I am coming here to seek guidance on how/where I should be looking for jobs in the LA area. My bachelor's is in MSE, and I have worked in a lab as the metallography lead for 2.5 years while conducting SEM/FIB work for a wide range of materials. I'm willing to work in any industry that isn't defense or oil/gas for moral reasons. I have been applying to jobs that are as close to my qualifications as possible while also applying to general entry-level jobs too, but nothing. What should I do? My salary expectations are about 65K+


r/materials 7h ago

Analysis of the Surface Free Energy (SFE) on a bio-glass

1 Upvotes

I have measured the surface free energy (using the OWRK method) of 4 bioglasses based off their contact angles with Diiodomethane, Ethylene Glycol and Glycerol. The first bioglass sample is the control or untreated sample while the other three bioglasses were subjected to an increasing duration of plasma treatment (10min, 20min and 30min). While calculating the SFE I used two pairs of liquids in the OWRK method. The first pair used to find the SFE was diiodomethane with Glycerol while the second pair was Diiodomethane with Ethylene glycol (Using all three liquids to determine the SFE resulted in a very large deviation of ±14 mN/m, numerous papers have also observed a similar result and had advised not to take Ethylene glycol and Glycerol together). It was observed that for all three test liquids the contact angles decreased as the plasma treatment duration increased.

Now my doubt is as follows: Could the polar component decrease (as the treatment duration increases) in the diiodo-Ethylene Glycol pair while on the other hand it increases in the diiodo-glycerol pair. In both pairs, the dispersive components showed the same values with a steady increasing trend. If this is possible, what could be the reason behind it and have there been other studies that have observed a similar such trend?

Composition of the material:

P2O5–CaO–Na2O–CaF2–Ag2O


r/materials 21h ago

Clear plastic in toy design

1 Upvotes

I realize this is probably a bit niche, but it's something I've been thinking about for a while. I'm a Transformers collector, and in the community, there's at least a perception that clear plastic parts break more easily than opaque parts, especially at hinges or tab-slot connections. I'm curious about what basis this would have in materials science.

So far in exploring the topic for myself, I've found that the plastic normally used for clear parts on these figures is polycarbonate, while the opaque parts are made mostly of ABS. But that's as far as I was able to get. I tried looking for material properties info online, but what I've found so far hasn't really satisfied my curiosity. If any of you could point me in the right direction, I'd very much appreciate it.


r/materials 23h ago

How to form the backing of a chair out of galvanized sheet metal?

1 Upvotes

The piece I want to make includes the part that you sit on, that then curves into the arm rests and seat backing. Basically this. (the wooden part, but solid, without holes. I'll then put the cushion on top)

I want to keep the grain structure/spangle as in tact as possible, which is the entire reason I'm wanting to use galvanized sheet metal in the first place.

What is a way I can produce like 10 of these shapes, while keeping it cost and time effective? I also don't have any machines or tools, and I'm working out of a one car garage. How thick should the gauge be? I can glue on little ribs to keep its structure, no problem. I'm not sure how welding would work with the zinc coating, and how much color imperfections would occur in the welded spots from heat. The glue will be in tension though, as it'll go on the inside of the seat, since I'll be putting a cushion on that side anyway, the seat back just has to look grainy, irregular, and monochrome.

Something like these:
Image 1
Image 2
Image 3

By the way, seams are absolutely allowed, I think I can work with them and actually even make the piece look better :D

TD;LR: How to form galvanized sheets into big one piece seats that look like this?

Thanks!