title: Catalytic growth of metallic tungsten whiskers based on the vapor-solid-solid mechanism.
abstract: Metallic W whiskers with tip diameters of 50-250 nm and lengths of 2-4 µm have been successfully synthesized in large quantities using Co-Ni alloyed catalysts. The relatively low growth temperature of 850 °C and the large catalyst size (over 100 nm) suggest that the growth of the W whiskers must be governed by the vapor-solid-solid mechanism. Our results show that the vapor-solid-solid model is suitable not only for the growth of nano-scaled whiskers with diameters below 100 nm, but also for submicro-scaled whiskers with diameters well above 100 nm. This technique has great potential to synthesize well controlled metallic whiskers.
authors: State Key Laboratory for Powder Metallurgy, School of Physics Science and Technology, Central South University, Changsha 410083, People's Republic of China. Key Laboratory of Low Dimensional Materials and Application Technology (Xiangtan University), Ministry of Education, Xiangtan 411005, People's Republic of China.
authors: S L
authors: SL
authors: Wang
authors: Y H
authors: YH
authors: He
authors: J
authors: J
authors: Zou
authors: Y
authors: Y
authors: Wang
authors: H
authors: H
authors: Huang
authors: B Y
authors: BY
authors: Huang
authors: C T
authors: CT
authors: Liu
authors: P K
authors: PK
authors: Liaw