Discussion
State whether the following is true or false.
Fused and sintered alumina differ in their microstructure rather than their chemistry.
Answer: B
Correct answer: True
Both are essentially the same compound. Fused alumina is melted in an electric arc furnace and solidified, giving large, dense, blocky crystals suited to abrasives and heavy refractories. Sintered alumina is formed from a fine powder and densified below the melting point, giving a fine-grained microstructure with much higher strength. The difference in properties comes entirely from grain size and porosity, not from composition.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development