Nanometer grain titanium carbonitride coatings with continuously graded interface onto silicon nitride cutting tools by pulsed high energy density plasma

2004 ◽  
Vol 384 (1-2) ◽  
pp. 202-208 ◽  
Author(s):  
Hezhuo Miao ◽  
Feng Shi ◽  
Zhijian Peng ◽  
Size Yang ◽  
Chizi Liu ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Energy Density ◽  
Cutting Tools ◽  
High Energy ◽  
High Energy Density ◽  
Titanium Carbonitride ◽  
Density Plasma

Structure of the Coatings onto Ceramic Cutting Tools Deposited by Pulsed High Energy Density Plasma

2007 ◽  
Vol 280-283 ◽  
pp. 1207-1210
Author(s):  
He Zhuo Miao ◽  
Zhi Jian Peng ◽  
Long Hao Qi ◽  
Feng Shi ◽  
Wen Jie Si
Keyword(s):  
Energy Density ◽  
Cutting Tools ◽  
High Energy ◽  
Grain Structure ◽  
High Energy Density ◽  
Pulsed Plasma ◽  
Solid Solution Strengthening ◽  
Coated Tools ◽  
Columnar Grain ◽  
Density Plasma

With a newly-developed technique, pulsed high energy density plasma (PHEDP), TiN, TiCN, and (Ti,Al)N coatings were deposited onto silicon nitride and cemented carbide cutting tools. The structures of these coatings were systematically investigated in this paper. The average surface roughness (Ra) of the coated tools were ranged in 20~150 nm. The smooth surface of coated tools means that the coatings are promising candidate for cutting tools of high precision and it is in favor of reducing the fiction coefficients and flank wear of tools. The coating thickness varied, in the range of 3~20 µm, with the deposition conditions of the shot number of pulsed plasma, and the voltages between the inner and outer electrodes of the coaxial gun. The coating has a densified structure compared to the substrate structure and almost no pores and cracks exist in the coating surface. The grain sizes of the coating were small (<100nm), much finer than those of the substrate (>2 µm). Except for TiN-Si3N4 system, no apparent columnar grain structure as presented predominantly in typical vapor deposited coatings was observed. In fact, an equiaxed structure was presented, due to the pulsed mode of plasma bombardment and solid solution strengthening of C or Al into TiN lattices, resulting in disruption, through renucleation, of epitaxy on individual columns. A continuous and densified interface was observed. All these characteristics in structures promised an excellent performance of the coated tools.

Titanium carbonitride films on cemented carbide cutting tool prepared by pulsed high energy density plasma

2007 ◽  
Vol 253 (11) ◽  
pp. 4923-4927 ◽  
Author(s):  
Wenran Feng ◽  
Chizi Liu ◽  
Guangliang Chen ◽  
Guling Zhang ◽  
Weichao Gu ◽  
...  
Keyword(s):  
Energy Density ◽  
Cutting Tool ◽  
High Energy ◽  
Cemented Carbide ◽  
High Energy Density ◽  
Titanium Carbonitride ◽  
Carbide Cutting Tool ◽  
Density Plasma

Hard and wear-resistant titanium nitride films for ceramic cutting tools by pulsed high energy density plasma

2003 ◽  
Vol 166 (2-3) ◽  
pp. 183-188 ◽  
Author(s):  
Zhijian Peng ◽  
Hezhuo Miao ◽  
Wei Wang ◽  
Size Yang ◽  
Chizi Liu ◽  
...  
Keyword(s):  
Energy Density ◽  
Titanium Nitride ◽  
Cutting Tools ◽  
High Energy ◽  
High Energy Density ◽  
Wear Resistant ◽  
Density Plasma
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