Improved micro drill bit tool life using nano-scale SiC/Ni electroplating
- Authors
- Kim, Kwang-Su; Park, Shinyoung; Cho, Danee; Jang, Gyu-Beom; Ahn, Sung-Hoon; Lee, Caroline Sunyong
- Issue Date
- 2012
- Publisher
- KOREAN ASSOC CRYSTAL GROWTH, INC
- Keywords
- SiC/Ni composite coating; WC-Co micro drill bit; Electrodeposition; Micro-hardness; Lifetime
- Citation
- JOURNAL OF CERAMIC PROCESSING RESEARCH, v.13, no.6, pp.730 - 734
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF CERAMIC PROCESSING RESEARCH
- Volume
- 13
- Number
- 6
- Start Page
- 730
- End Page
- 734
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/36272
- DOI
- 10.36410/jcpr.2012.13.6.730
- ISSN
- 1229-9162
- Abstract
- SiC/Ni composite layers were coated onto WC-Co plates to strengthen micro drill bits where the micro drill bits were machined from WC-Co plates. The composite layers were formed by direct current (DC) electrodeposition in a Watts-type bath, and two SiC concentrations were used to coat the WC-Co plates. The coating layer was optimized by evaluating the hardness and the friction coefficient. With 10 g/l of SiC, some nanoparticles agglomerated and were embedded into the coating layer; moreover, the composite coating layer was not uniform. Compared to the 10 g/l SiC coating, the nanoparticles were well dispersed and the coating was harder using 5 g/l of SiC. After electroplating the micro drill bits, a positioning accuracy test was conducted to assess processing capability. The processing capability index was measured as 1.944 for the uncoated drill bit, 2.110 for the 10 g/l SiC coating, and 2.717 for the 5 g/l SiC coating. Therefore, the micro drill bits coated with 5 g/l of SiC exhibited an optimized processing capability index. When using 100 mu m-diameter drill bits, the composite coating layer, which is relatively thin, must be hard. Micro drill bits coated with 5 g/l of SiC had a 1 mu m thick coating layer and an optimum processing capability.
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/36272)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.