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Preparation of Al2O3/Ti(C,N)/ZrO2/CaF2@Al(OH)3 Ceramic Tools and Cutting Performance in Turning.
- Source :
- Materials (1996-1944); Dec2019, Vol. 12 Issue 23, p3820, 1p, 1 Color Photograph, 3 Diagrams, 2 Charts, 4 Graphs
- Publication Year :
- 2019
-
Abstract
- Aiming at the contradiction between the lubricating performance and mechanical performance of self-lubricating ceramic tools. CaF<subscript>2</subscript>@Al(OH)<subscript>3</subscript> particles were prepared by the heterogeneous nucleation method. An Al<subscript>2</subscript>O<subscript>3</subscript>/Ti(C,N) ceramic tool with CaF<subscript>2</subscript>@Al<subscript>2</subscript>(OH)<subscript>3</subscript> particles and ZrO<subscript>2</subscript> whiskers was prepared by hot press sintering (frittage). The cutting performances and wear mechanisms of this ceramic tool were investigated. Compared with the Al<subscript>2</subscript>O<subscript>3</subscript>/Ti(C,N) ceramic tool, the Al<subscript>2</subscript>O<subscript>3</subscript>/Ti(C,N)/ZrO<subscript>2</subscript>/CaF<subscript>2</subscript>@Al(OH)<subscript>3</subscript> ceramic tool had lower cutting temperatures and surface roughness. When the cutting speed was increased from 100 m/min to 300 m/min, a lot of CaF<subscript>2</subscript> was smeared onto the surface of the ceramic tool, and the flank wear of the Al<subscript>2</subscript>O<subscript>3</subscript>/Ti(C,N)/ZrO<subscript>2</subscript>/CaF<subscript>2</subscript>@Al(OH)<subscript>3</subscript> ceramic tool was reduced. The main wear mechanisms of the Al<subscript>2</subscript>O<subscript>3</subscript>/Ti(C,N)/ZrO<subscript>2</subscript>/CaF<subscript>2</subscript>@Al(OH)<subscript>3</subscript> ceramic tool were adhesive wear and micro-chipping. The formation of solid lubricating film and the improvement of fracture toughness by adding ZrO<subscript>2</subscript> whiskers and CaF<subscript>2</subscript>@Al(OH)<subscript>3</subscript> were important factors for the Al<subscript>2</subscript>O<subscript>3</subscript>/Ti(C,N)/ZrO<subscript>2</subscript>/CaF<subscript>2</subscript>@Al(OH)<subscript>3</subscript> ceramic tool to have better cutting performances. [ABSTRACT FROM AUTHOR]
- Subjects :
- CUTTING tools
ADHESIVE wear
THIN films
HETEROGENOUS nucleation
FRACTURE toughness
Subjects
Details
- Language :
- English
- ISSN :
- 19961944
- Volume :
- 12
- Issue :
- 23
- Database :
- Complementary Index
- Journal :
- Materials (1996-1944)
- Publication Type :
- Academic Journal
- Accession number :
- 140236160
- Full Text :
- https://doi.org/10.3390/ma12233820