Synthesis route and mechanical properties of reactive hot pressed TiN-TiB2 ceramics

Zhen Lin Yang; Zhan Guo Liu; Jia Hu Ouyang; Yu Zhou; Yu Jin Wang; W. G. Sloof

doi:10.1016/j.ijrmhm.2013.02.001

Synthesis route and mechanical properties of reactive hot pressed TiN-TiB₂ ceramics

Zhen Lin Yang
, Zhan Guo Liu
, Jia Hu Ouyang^*
, Yu Zhou
, Yu Jin Wang
, W. G. Sloof

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Reaction process and phase formation mechanisms in reactive hot pressing (RHP) of titanium and boron nitride blend powders have been investigated in vacuum. In temperatures of up to 1300 C, chemical reactions in the Ti-BN blend powder proceed via a solid-state diffusion process. Intermediate phases of hexagonal α-TiN_0.3, tetragonal Ti₂N, nonstoichiometric cubic TiN_0.9 and orthorhombic TiB are found before they finally transform to the stoichiometric cubic TiN and hexagonal TiB ₂. Both the TiN-TiB₂ ceramics reactive hot-pressed at 1600 and 1800 C represent intragranular/intergranular distributions of TiB ₂ in TiN. In contrast with monolithic TiN and TiB₂ ceramics, the reactive hot-pressed TiN-TiB₂ exhibits a significant enhancement on flexural strength and fracture toughness. TiN-TiB₂ ceramics reactive hot-pressed at 1800 C have a Vickers hardness of 17.8 GPa, an elastic modulus of 475 GPa, a flexural strength of 732 MPa and a fracture toughness of 8.5 MPa·m^1/2.

Original language	English
Pages (from-to)	54-59
Number of pages	6
Journal	International Journal of Refractory Metals and Hard Materials
Volume	41
DOIs	https://doi.org/10.1016/j.ijrmhm.2013.02.001
State	Published - Nov 2013
Externally published	Yes

Keywords

Diffusion
Mechanical properties
Reaction sequence
Reactive hot pressing
TiN-TiB ceramics

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10.1016/j.ijrmhm.2013.02.001

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title = "Synthesis route and mechanical properties of reactive hot pressed TiN-TiB2 ceramics",

abstract = "Reaction process and phase formation mechanisms in reactive hot pressing (RHP) of titanium and boron nitride blend powders have been investigated in vacuum. In temperatures of up to 1300 C, chemical reactions in the Ti-BN blend powder proceed via a solid-state diffusion process. Intermediate phases of hexagonal α-TiN0.3, tetragonal Ti2N, nonstoichiometric cubic TiN0.9 and orthorhombic TiB are found before they finally transform to the stoichiometric cubic TiN and hexagonal TiB 2. Both the TiN-TiB2 ceramics reactive hot-pressed at 1600 and 1800 C represent intragranular/intergranular distributions of TiB 2 in TiN. In contrast with monolithic TiN and TiB2 ceramics, the reactive hot-pressed TiN-TiB2 exhibits a significant enhancement on flexural strength and fracture toughness. TiN-TiB2 ceramics reactive hot-pressed at 1800 C have a Vickers hardness of 17.8 GPa, an elastic modulus of 475 GPa, a flexural strength of 732 MPa and a fracture toughness of 8.5 MPa·m1/2.",

keywords = "Diffusion, Mechanical properties, Reaction sequence, Reactive hot pressing, TiN-TiB ceramics",

author = "Yang, \{Zhen Lin\} and Liu, \{Zhan Guo\} and Ouyang, \{Jia Hu\} and Yu Zhou and Wang, \{Yu Jin\} and Sloof, \{W. G.\}",

year = "2013",

month = nov,

doi = "10.1016/j.ijrmhm.2013.02.001",

language = "英语",

volume = "41",

pages = "54--59",

journal = "International Journal of Refractory Metals and Hard Materials",

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TY - JOUR

T1 - Synthesis route and mechanical properties of reactive hot pressed TiN-TiB2 ceramics

AU - Yang, Zhen Lin

AU - Liu, Zhan Guo

AU - Ouyang, Jia Hu

AU - Zhou, Yu

AU - Wang, Yu Jin

AU - Sloof, W. G.

PY - 2013/11

Y1 - 2013/11

N2 - Reaction process and phase formation mechanisms in reactive hot pressing (RHP) of titanium and boron nitride blend powders have been investigated in vacuum. In temperatures of up to 1300 C, chemical reactions in the Ti-BN blend powder proceed via a solid-state diffusion process. Intermediate phases of hexagonal α-TiN0.3, tetragonal Ti2N, nonstoichiometric cubic TiN0.9 and orthorhombic TiB are found before they finally transform to the stoichiometric cubic TiN and hexagonal TiB 2. Both the TiN-TiB2 ceramics reactive hot-pressed at 1600 and 1800 C represent intragranular/intergranular distributions of TiB 2 in TiN. In contrast with monolithic TiN and TiB2 ceramics, the reactive hot-pressed TiN-TiB2 exhibits a significant enhancement on flexural strength and fracture toughness. TiN-TiB2 ceramics reactive hot-pressed at 1800 C have a Vickers hardness of 17.8 GPa, an elastic modulus of 475 GPa, a flexural strength of 732 MPa and a fracture toughness of 8.5 MPa·m1/2.

AB - Reaction process and phase formation mechanisms in reactive hot pressing (RHP) of titanium and boron nitride blend powders have been investigated in vacuum. In temperatures of up to 1300 C, chemical reactions in the Ti-BN blend powder proceed via a solid-state diffusion process. Intermediate phases of hexagonal α-TiN0.3, tetragonal Ti2N, nonstoichiometric cubic TiN0.9 and orthorhombic TiB are found before they finally transform to the stoichiometric cubic TiN and hexagonal TiB 2. Both the TiN-TiB2 ceramics reactive hot-pressed at 1600 and 1800 C represent intragranular/intergranular distributions of TiB 2 in TiN. In contrast with monolithic TiN and TiB2 ceramics, the reactive hot-pressed TiN-TiB2 exhibits a significant enhancement on flexural strength and fracture toughness. TiN-TiB2 ceramics reactive hot-pressed at 1800 C have a Vickers hardness of 17.8 GPa, an elastic modulus of 475 GPa, a flexural strength of 732 MPa and a fracture toughness of 8.5 MPa·m1/2.

KW - Diffusion

KW - Mechanical properties

KW - Reaction sequence

KW - Reactive hot pressing

KW - TiN-TiB ceramics

UR - https://www.scopus.com/pages/publications/84884357334

U2 - 10.1016/j.ijrmhm.2013.02.001

DO - 10.1016/j.ijrmhm.2013.02.001

M3 - 文章

AN - SCOPUS:84884357334

SN - 0263-4368

VL - 41

SP - 54

EP - 59

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

ER -

Synthesis route and mechanical properties of reactive hot pressed TiN-TiB₂ ceramics

Abstract

Keywords

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