Highly Dense Amorphous Si2 BC3 N Monoliths with Excellent Mechanical Properties Prepared by High Pressure Sintering

2015 ◽  
Vol 98 (12) ◽  
pp. 3782-3787 ◽  
Author(s):  
Bin Liang ◽  
Zhihua Yang ◽  
Jiancun Rao ◽  
Delong Cai ◽  
Xiaoming Duan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
High Pressure Sintering

Study on High Pressure Sintering of Nanocrystalline Diamond with Nano Silicon as Additives

2016 ◽  
Vol 848 ◽  
pp. 613-617
Author(s):  
Fu Ming Deng ◽  
Chang Zhan ◽  
Ye Zhao ◽  
Wen Li Deng ◽  
Qing Lei
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
High Performance ◽  
Nanocrystalline Diamond ◽  
Hardness Tester ◽  
Sintering Time ◽  
Wear Ratio ◽  
Average Grain Size ◽  
High Pressure Sintering ◽  
Surface Graphitization

In this paper, nanocrystalline diamond with the average grain size of 50nm was prepared under different sintering pressure, temperature and sintering time. The microstructure of the sample was analyzed by SEM, EDS and XRD, and the mechanical properties tested by micro-hardness tester and wear ratio instrument. The results show that the sample sintered under the optimum conditions of oil pressure 87MPa, heating power 4000W and sintering time 120s possessed hardness of 706.41HV and wear ratio of 3280. It indicated that high performance n-PCD sintered from nanodiamond and silicon system can be formed hardly with diamond to diamond bonding but can be formed with diamond to silicon carbide bonding. The poor mechanical properties of the samples were due to the surface adsorption groups and surface graphitization of nanodiamond during high pressure sintering.

scholarly journals Microstructure and Properties of AA6061/SiCp Composites Sintered under Ultra High-Pressure

2020 ◽  
Vol 10 (20) ◽  
pp. 7363
Author(s):  
Lei Xu ◽  
Erkuo Yang ◽  
Yasong Wang ◽  
Changyun Li ◽  
Zhiru Chen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Wear Resistance ◽  
Wear Rate ◽  
Abrasive Wear ◽  
Wear Mechanism ◽  
Adhesive Wear ◽  
Wear Property ◽  
Ultra High Pressure ◽  
High Pressure Sintering

Ultra high-pressure sintering (UHPS) was used to prepare AA6061/SiCp composites with different contents and the effect of sintering temperatures on microstructure and mechanical properties was investigated in this study. The results showed that a uniform distribution of nano-SiC particles (N-SiCp) is obtained by the UHPS method. With the increase in N-SiCp contents, the higher hardness and better wear resistance could be inspected. The interfacial reactions and Al4C3 phase appeared above 550 °C. The relative density of composites first increased and then decreased; with the temperature raising it reached 99.58% at 600 °C. The hardness and wear property showed the same trend with the hardness reaching 52 HRA and wear rate being 1.0 × 10−6 g/m at 600 °C. Besides, the wear mechanism of the composites is mainly composed of abrasive wear and adhesive wear.

Consolidation and Evolution of Physical-Mechanical Properties of Nanocomposite Materials Based on High-Melting Compounds

1996 ◽  
Vol 457 ◽  
Author(s):  
R. A. Andrievski ◽  
G. V. Kalinnikov ◽  
V. S. Urbanovich
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Magnetron Sputtering ◽  
Nanocomposite Materials ◽  
High Melting ◽  
Ultrafine Powders ◽  
High Pressure Sintering ◽  
Sem Analyses

ABSTRACTNanocomposite materials of TiN/TiB2 system are prepared both by high pressure sintering of ultrafine powders and the films deposition using magnetron sputtering. Properties and structure of obtained paniculate and film materials derived from hardness measurements as well as TEM and SEM analyses are discussed and compared in detail.

High pressure sintering behavior and mechanical properties of cBN–Ti3Al and cBN–Ti3Al-Al composite materials

2012 ◽  
Vol 32 (4) ◽  
pp. 524-531 ◽  
Author(s):  
Yu Li ◽  
Zili Kou ◽  
Haikuo Wang ◽  
Kaixue Wang ◽  
Hongchang Tang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Composite Materials ◽  
Sintering Behavior ◽  
Al Composite ◽  
High Pressure Sintering
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