Bh. Park et al., Effect of silicon addition on microstructure and mechanical property of titanium nitride film prepared by plasma-assisted chemical vapor deposition, THIN SOL FI, 348(1-2), 1999, pp. 210-214
The effect of Si addition on the microstructure and mechanical property of
TiN film was investigated. The Ti-Si-N films were deposited on high-speed s
teel substrate by a plasma-assisted chemical vapor deposition (PACVD) techn
ique using a gaseous mixture of TiCl4, SiCl4, N-2, Ar, and H-2. The Si cont
ent in the film was increased up to 15 at.% by increasing the mixing gas ra
tio of SiCl4 to TiCl4. The Si was found to be codeposited in the form of Si
3N4/TiN composite. The Si addition to TiN film caused the microstructural c
hanges such as grain size refinement, randomly oriented microstructure, and
nano-sized precipitates of silicon nitride in the TiN matrix. The Ti-Si-N
film containing a Si content of similar to 7 at.% showed the micro-hardness
value of similar to 3400 HK, which was largely an increased value in compa
rison with compared with similar to 1500 HK of the pure PACVD-TiN film. (C)
1999 Elsevier Science S.A. All rights reserved.