looking for a new candidate materials
looking for a new candidate materials
(OP)
I am involved in an R&D project and am looking for at least 15 new candidate materials in each catagory for use in a small two stroke engine. I thought it might be interesting to post this in here to see what ideas come up that we have not concidered.
The criteria for these materials are: Lighter weight, stronger, harder, better insulating properties, corrosion restant, high thermal shock resistant. Our goal is to improve upon the 2 stoke engine by setting aside cost for performance and durability.
#1 Piston
#2 Conecting rod
#3 Cylinder wall
#4 Crank
#5 Coatings
Have fun with this and think outside the box.
The criteria for these materials are: Lighter weight, stronger, harder, better insulating properties, corrosion restant, high thermal shock resistant. Our goal is to improve upon the 2 stoke engine by setting aside cost for performance and durability.
#1 Piston
#2 Conecting rod
#3 Cylinder wall
#4 Crank
#5 Coatings
Have fun with this and think outside the box.





RE: looking for a new candidate materials
Don't think anyone will pay much more for a more durable 2 stroke
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
RE: looking for a new candidate materials
Chocolates,men,coffee: are somethings liked better rich!!
(noticed in a coffee shop)
RE: looking for a new candidate materials
I suppose metal matrix composites of the alloys above could be considered, but commercial vendors are limited. Plus, composites are more about stiffness-limited designs (in general), and I am not sure how much benefit one would derive.
#2 Connecting rod: I would consider forged titanium for this since it is a fatigue-limited two force member. I would apply deep rolling/roller burnishing to improve fatigue strength.
#3 Cylinder wall: Does this mean cylinder block, or a coating/liner for the block? A lightweight magnesium cylinder block appears feasible (see recent work by BMW, AVL and USAMP), and thermal spray coatings are commercial.
#4 Crankshaft: I don't think you will find anything better than forged steel that has been nitrided and rolled/burnished for this fatigue-limited component. Maybe titanium (titanium MMC for higher stiffness) with a nitrogen diffusion hardening process or DLC coating could be considered.
#5 Coatings: in addition to the ones already listed above, how about CrN, TiN, and WC.
Regards,
Cory
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RE: looking for a new candidate materials
with a low cte, developed for engine parts and is castable
RE: looking for a new candidate materials