I'm in need of designing a bob for a rotational viscometer which have to withstand high temperatures. The weight of the bob should not exceed 500g. Can anyone tell me the best material that can be used (it should be cost effective too)
Luckman Muhmood
Fe is the cheapest. You just need to maintain the oxygen partial pressure in your furnace below 10pow(-12) atm. You can use an Fe crucible. It should be pure iron with least impurities possible. However with this material you can do measurements upto 1460 degrees.
Again the material choice would depend on the system you are studying. It crucible and the bob should not react with your molten fluid. In case it reacts the best option is either Mo or Pt/ Pt-Rh alloys.
0 votes
0 thanks
- Badges
- Science topic
- Similar topics
- Engineering
- Materials Engineering
More Ram M S's questions See All
Similar questions and discussions