Presentation Information
[R3P-14]Synthesis of nano-polycrystalline diamond (NPD) from stearic acid and characterization of its microtexture
*Hideaki Kawamura1, Hiroaki Ohfuji2 (1. Graduate School of Science and Engineering, Ehime University, 2. Geodynamics Research Center, Ehime University)
Keywords:
Nano-Polycrystalline Diamond (NPD),High pressure,C-H-O fluid,TEM
We performed a series of high-pressure and high-temperature experiments using multi-anvil apparatus and found that yellowish NPD-like diamond was obtained from a decomposition product of stearic acid. Recovered samples was observed by TEM to characterize the microtexture of diamond synthesized from stearic acid. The formation temperature of this diamond is about 800℃ and significantly lower than that of previous NPD from graphite.