Effect of sintering pressure on the texture of hot-press sintered hexagonal boron nitride composite ceramics

Duan, Xiaoming; Jia, Dechang; Wu, Zhengbin; Tian, Zhiling; Yang, Zhihua; Wang, Shengjin; Zhou, Yu

doi:10.1016/j.scriptamat.2012.09.012

Cited by 78 publications

(27 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It can obtain the dense material at relatively lower sintering temperature. [8][9][10][11] Therefore, it is a novel technique to produce the Cr-Ni alloys.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Characteristics of Submicron-Structured Powder-Fabricated Cr50Ni50 Alloys <i>via</i> Different Hot-Press Sintering Pressures

Chang

Liao

Huang³

et al. 2016

Mater. Trans.

View full text Add to dashboard Cite

In this study, two different compositions of submicron-structured chromium and nickel powders are mixed to fabricate Cr50Ni50 alloys by vacuum hot-press sintering. The research imposes various hot-press sintering pressures (12, 24, 36 and 48 MPa), while the temperature is maintained at 1275 C for 1 h, respectively. The experimental results show the optimum parameters of the hot-press sintered Cr50Ni50 alloys to be 1275 C at 48 MPa for 1 h. The relative density reaches 96.29%, and the hardness and electrical conductivity increase to 75.2 HRA and 2.01 × 10 4 Scm −1 , respectively. Simultaneously, the transverse rupture strength (TRS) value increases to 1109 MPa. Moreover, the Cr50Ni50 alloys dramatically acquire a more homogeneous microstructure, and the mean grain size decreases to 3.48 μm. Consequently, it is shown that hotpress sintering has a positive in uence on the sintering behavior and improves the performance of the refractory metals.

show abstract

“…It can obtain the dense material at relatively lower sintering temperature. [8][9][10][11] Therefore, it is a novel technique to produce the Cr-Ni alloys.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Characteristics of Submicron-Structured Powder-Fabricated Cr50Ni50 Alloys <i>via</i> Different Hot-Press Sintering Pressures

Chang

Liao

Huang³

et al. 2016

Mater. Trans.

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4] Therefore, h-BN has been widely applied as insulators for high temperature furnaces, protection tubes and insulating sleeves for thermocouples. [5][6][7] However, the densification of h-BN ceramic is rather difficult due to its strong covalent bonding nature and anisotropic plate-like structure.…”

Section: Introductionmentioning

confidence: 99%

Physical and mechanical properties of hexagonal boron nitride ceramic fabricated by pressureless sintering without additive

Wang

Jin

Yang

et al. 2014

Advances in Applied Ceramics

View full text Add to dashboard Cite

Hexagonal boron nitride (h-BN) ceramic was successfully fabricated by pressureless sintering at 2100uC using submicrometre h-BN powders without any sintering additive. The as prepared h-BN ceramic showed a room temperature flexural strength of 30?7 MPa. Its flexural strength increased with the increment of temperature in N 2 atmosphere, and it retained a strength of 57?2 MPa (nearly two times of the room temperature strength) at 1600uC due to clean grain boundaries with no glassy phase. Additionally, the as prepared h-BN ceramic showed a high thermal conductivity of 31?76 W m 21 k 21 and a good thermal shock resistance, which retained a relatively high residual flexural strength of 22?6 MPa (73?5% of the original flexural strength) at DT5800uC. The as prepared h-BN ceramic presents a good application prospect at high temperature.

show abstract

“…• Activators of sintering are used in order to accelerate contraction, decrease sintering temperature or formation of proper microstructure of a sinter. They influence mainly acceleration of diffusion processes, formation of transient liquid phase and prevent grain growth [1,[4][5][6][7][8].…”

Section: IVmentioning

confidence: 99%

Consolidation of AISI316L Austenitic Steel — TiB2 Composites by SPS and HP-HT Technology

Sulima¹

2015

Sintering Techniques of Materials

View full text Add to dashboard Cite

Effect of sintering pressure on the texture of hot-press sintered hexagonal boron nitride composite ceramics

Cited by 78 publications

References 12 publications

Investigation of the Characteristics of Submicron-Structured Powder-Fabricated Cr50Ni50 Alloys <i>via</i> Different Hot-Press Sintering Pressures

Investigation of the Characteristics of Submicron-Structured Powder-Fabricated Cr50Ni50 Alloys <i>via</i> Different Hot-Press Sintering Pressures

Physical and mechanical properties of hexagonal boron nitride ceramic fabricated by pressureless sintering without additive

Consolidation of AISI316L Austenitic Steel — TiB2 Composites by SPS and HP-HT Technology

Contact Info

Product

Resources

About