Diamond cutting tools with a Ni3Al matrix processed by reaction pseudo-hipping
Resource
Metallurgical and Materials Transactions A 36 (10): 2801-2806
Journal
Metallurgical and Materials Transactions A
Journal Volume
36
Journal Issue
10
Pages
2801-2806
Date Issued
2005
Date
2005
Author(s)
Hwang, K. S.
Yang, T. H.
Hu, S. C.
Abstract
Nickel aluminide, Ni3Al, has high hot strength, which could help overcome the high heat and the interrupted vibrations that diamond cutting tools encounter during operation. Reaction pseudo-hipping, on the other hand, require only a short dwell time at high temperatures, which are detrimental to the diamond grits. Thus, it is promising to combine the unique nickel aluminide with the unique reaction pseudo-hipping process and replace the commonly used cobalt matrix. This study reports for the first time the process and application of reaction-pseudo-hipped Ni3Al matrix for diamond tools. In this work, mixtures of elemental nickel, aluminum, boron powder, and diamond particles are reaction-pseudo-hipped. Densities greater than 99 pct and mechanical properties comparable to those of the cobalt are attained. With high-grade diamond grits, the tools thus prepared how, under dry cutting conditions, a grinding ratio 118 pct higher than that with the cobalt matrix.
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
24.pdf
Size
401.76 KB
Format
Adobe PDF
Checksum
(MD5):e2f944df408edc54ce2fa579a8fcd56a