Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1635669 | Transactions of Nonferrous Metals Society of China | 2015 | 6 Pages |
Abstract
The morphologies and formation process of Ni-pool defects in WC-8Ni cemented carbides were studied. The SEM images show that Ni-pool generally has two kinds of morphologies: “island” in isolation and “ring” around a new phase. In the obtained samples with “ring-like Ni-pool”, WC, Ni and Ni2W4C (η phase) phases were detected in XRD patterns. Combined with SEM, EDX and XRD results, it is found that the phase in the center of the “ring-like Ni-pool” is Ni2W4C (η phase) and the main chemical components of Ni-pool are Ni, W and C. In addition, the relationships among large size Ni (agglomerated) particles, volatile impurities, pores and carbon content vs forming process of the Ni-pool defects for WC-8Ni cemented carbides are also presented and discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Kai-hua SHI, Ke-chao ZHOU, Zhi-you LI, Dou ZHANG, Xiu-qi ZAN,