The effect of Al2O3 addition on the milling behavior of NiAl powder
- 31 Downloads
The milling behavior of nickel aluminide, NiAl, powder in the presence of a fine Al 2 O 3 powder was investigated in the present study. The milling was carried out in an attrition mill. The size and shape of NiAl particles were not changed after milling while only NiAl powder was milled. When fine Al 2 O 3 powder was added to the NiAl powder, the Al 2 O 3 particles attached to the surface of NiAl particles during milling. As a consequence, the size of NiAl particles was reduced after milling. The shape of NiAl particles also changed. The presence of fine Al 2 O 2 particles enhanced the milling efficiency. The Al 2 O 3 particles on the surface of NiAl powder can be removed by washing repeatedly in an ultrasonic bath.
KeywordsAl2O3 milling NiAl particle size distribution
Unable to display preview. Download preview PDF.
- 1.R. Darolia, NiAl Alloys for High-Temperature Structural Applications,J. Met., Vol 43 (No. 3), 1991, p 44–49Google Scholar
- 2.R.D. Noebe, R.R. Bowaman, and M.V. Nathal, Physical and Mechanical Properties of the B2 Compound NiAl,Int. Mater. Rev., Vol 38 (No. 4), 1993, p 193–231Google Scholar
- 3.D.E. Alman and N.S. Stoloff, “Powder Processing of Intermetallic-Base Composites”, 18th Annual Conf. on Composites and Advanced Ceramics (Cocoa Beach, FL), United States Advanced Ceramics Association (USACA) and the Advanced Composites Working Group, 1994Google Scholar
- 6.J.S. Reed,Principles of Ceramic Processing, 2nd ed., John Wiley & Sons, 1995, p 318Google Scholar