Synthesis and characterization of graphene nanosheet-modified polycrystalline diamond compact

2021 ◽  
Vol 101 ◽  
pp. 105684
Author(s):  
Xuefeng Yang ◽  
Zhengxin Li ◽  
Fuming Deng
Keyword(s):  
Polycrystalline Diamond ◽  
Synthesis And Characterization ◽  
Graphene Nanosheet ◽  
Polycrystalline Diamond Compact

Synthesis and Characterization of Thermally Stable B-Doped Polycrystalline Diamond

2012 ◽  
Vol 217-219 ◽  
pp. 1191-1194
Author(s):  
Hai Liang Huang ◽  
Dan Wang ◽  
You Jin Zheng ◽  
Gui Hong Zuo ◽  
Long Cheng Yin ◽  
...  
Keyword(s):  
Polycrystalline Diamond ◽  
Diamond Powder ◽  
Synthesis And Characterization ◽  
Thermally Stable ◽  
Temperature Differential ◽  
X Ray Diffraction ◽  
Sintering Aid ◽  
X Ray ◽  
High Pressure Apparatus

In this study we report on the synthesis and characterization of thermally stable polycrystalline diamond (PCD) using Ni-based alloys catalyst as a sintering aid and the B-doped diamond powder in the infiltrating way. The samples were treated at 5.6 GPa and 1200–1480 °C for 10 min in China-type cubic high pressure apparatus. Scanning electron microscopy showed significant intergrowth of the diamond particles sintered in the presence of Ni-based alloy. X-ray diffraction showed the phase change of the samples sintered at the different temperature. Differential thermal analysis (DTA) and thermogravimetric analysis (TG) showed the sample was significantly more heat-resisting compared to conventional PCD. The results showed that the appropriate conditions of thermally stable PCD sintered were 5.6GPa and 1200–1480 °C.

Synthesis and characterization of an Au nanoparticles/graphene nanosheet nanocomposite and its application for the simultaneous determination of tramadol and acetaminophen

2019 ◽  
Vol 11 (40) ◽  
pp. 5150-5159 ◽  
Author(s):  
Nasrin Rokhsefid ◽  
Masoud Reza Shishehbore
Keyword(s):  
Simultaneous Determination ◽  
Carbon Paste Electrode ◽  
Au Nanoparticles ◽  
Chemical Sensor ◽  
Synthesis And Characterization ◽  
Carbon Paste ◽  
Graphene Nanosheet ◽  
Paste Electrode

Here, we aimed to prepare a selective and sensitive electro-chemical sensor through modifying a carbon paste electrode (CPE) with a gold nanoparticle graphene nanosheet (AuNPs/GN) nanocomposite and 4-hydroxyl-2-(triphenylphosphonio)phenolate (HTP).

Synthesis and Characterization of the Three Dicyclopentapyrenes

1996 ◽  
Vol 61 (10) ◽  
pp. 3572-3572
Author(s):  
Lawrence T. Scott ◽  
Atena Necula
Keyword(s):  
Synthesis And Characterization

Synthesis and characterization of TiN / Ti / AISI 410 coatings

2018 ◽  
Vol 2 (1) ◽  
pp. 7
Author(s):  
S Chirino ◽  
Jaime Diaz ◽  
N Monteblanco ◽  
E Valderrama
Keyword(s):  
Synthesis And Characterization ◽  
Photoemission Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Columnar Grains ◽  
Tin Thin Films ◽  
Steel Aisi ◽  
Interacting Surfaces ◽  
Stainless Steel Aisi

The synthesis and characterization of Ti and TiN thin films of different thicknesses was carried out on a martensitic stainless steel AISI 410 substrate used for tool manufacturing. The mechanical parameters between the interacting surfaces such as thickness, adhesion and hardness were measured. By means of the scanning electron microscope (SEM) the superficial morphology of the Ti/TiN interface was observed, finding that the growth was of columnar grains and by means of EDAX the existence of titanium was verified.  Using X-ray diffraction (XRD) it was possible to observe the presence of residual stresses (~ -3.1 GPa) due to the different crystalline phases in the coating. Under X-ray photoemission spectroscopy (XPS) it was possible to observe the molecular chemical composition of the coating surface, being Ti-N, Ti-N-O and Ti-O the predominant ones.

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