Effect of time on microstructure and hardness of βSiAlON–cubic boron nitride composites during spark plasma sintering

2011 ◽  
Vol 37 (2) ◽  
pp. 521-524 ◽  
Author(s):  
Mikinori Hotta ◽  
Takashi Goto
Keyword(s):  
Boron Nitride ◽  
Spark Plasma Sintering ◽  
Cubic Boron Nitride ◽  
Plasma Sintering ◽  
Spark Plasma

Preparation of β SiAlON-cBN Composites by Spark Plasma Sintering

2008 ◽  
Vol 403 ◽  
pp. 241-242
Author(s):  
Mikinori Hotta ◽  
Takashi Goto
Keyword(s):  
Phase Transformation ◽  
Boron Nitride ◽  
Spark Plasma Sintering ◽  
Vickers Hardness ◽  
Hexagonal Boron Nitride ◽  
Cubic Boron Nitride ◽  
Holding Time ◽  
Theoretical Density ◽  
Plasma Sintering ◽  
Spark Plasma

SiAlON-cubic boron nitride (cBN) composite was prepared by spark plasma sintering (SPS) using -SiAlON and cBN powders as starting materials, and the effect of holding time on densification, phase transformation and hardness of the composite was investigated. The SiAlON-cBN composite containing 20 vol% cBN sintered at 1650oC for 60s was densified to >97% of theoretical density. cBN phase transformed to hexagonal boron nitride (hBN) in the SiAlON-cBN composite with increasing holding time at 1650oC. Vickers hardness of the SiAlON-20vol%cBN composite sintered at 1650oC for 60-300s was 17.7GPa, and the hardness decreased with increasing holding time.

Spark Plasma Sintering of βSiAlON-cBN Composite

2007 ◽  
Vol 561-565 ◽  
pp. 599-602 ◽  
Author(s):  
Mikinori Hotta ◽  
Takashi Goto
Keyword(s):  
Phase Transformation ◽  
Boron Nitride ◽  
Spark Plasma Sintering ◽  
Firing Temperature ◽  
Vickers Hardness ◽  
Cubic Boron Nitride ◽  
Theoretical Density ◽  
Maximum Value ◽  
Plasma Sintering ◽  
Spark Plasma

βSiAlON-cubic boron nitride (cBN) composites were prepared from β-SiAlON and cBN powders using spark plasma sintering (SPS) at firing temperature of 1600-1900oC under pressure of 100MPa, and densification, phase transformation and hardness of the composites were investigated. The phase transformation of cBN to hexagonal BN (hBN) was inhibited in βSiAlON-cBN composite. βSiAlON-cBN composites containing 10-30 vol% cBN fired at 1650oC were densified to 95-98% of theoretical density with no transformation of cBN to hBN. Vickers hardness of the βSiAlON-cBN composite containing 20 vol% cBN fired at 1650oC was 17.5 GPa in maximum value, and the hardness significantly decreased as cBN phase was transformed to hBN in the composites.

Investigation of Ti coatings on cubic boron nitride (cBN) grits by discharge treatment in spark plasma sintering system

2017 ◽  
Vol 28 (9) ◽  
pp. 2281-2287 ◽  
Author(s):  
Rui Chang ◽  
Yanhui Wang ◽  
Jianbing Zang ◽  
Yiqing Yu ◽  
Jing Lu ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Spark Plasma Sintering ◽  
Cubic Boron Nitride ◽  
Discharge Treatment ◽  
Plasma Sintering ◽  
Spark Plasma

Ordered mesoporous polymer-derived ceramics and their processing into hierarchically porous boron nitride and silicoboron carbonitride monoliths

2014 ◽  
Vol 38 (5) ◽  
pp. 1923-1931 ◽  
Author(s):  
Samuel Bernard ◽  
Philippe Miele
Keyword(s):  
Boron Nitride ◽  
Spark Plasma Sintering ◽  
Oxide Materials ◽  
Hierarchically Porous ◽  
Mesoporous Polymer ◽  
Polymer Derived Ceramics ◽  
Plasma Sintering ◽  
Ordered Mesoporous ◽  
Spark Plasma

This review describes the elaboration of ordered mesoporous non-oxide materials such as BN and SiBCN and the subsequent fabrication of derived monoliths by spark plasma sintering using the as-prepared powders.

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