Synthesis of diamond with high nitrogen concentration from powder catalyst-C-additive NaN3 by HPHT
Synthesis of diamond with high nitrogen concentration from powder catalyst-C-additive NaN3 by HPHT
复制标题
粉末催化剂-碳添加剂NaN3高温高压合成高氮金刚石
DOI：
10.1016/j.carbon.2005.10.018
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发表时间：
2006-04
期刊：
影响因子：
10.9
通讯作者：
Z.Z. Liang
中科院分区：
文献类型：
--
作者：
H. K;a;C.Y. Zang;Qing-Feng Guan;H.A. Ma;P.W. Zhu;X. Jia;Z.Z. Liang
在六面顶砧高温高压装置上，以粉末触媒（Fe-Ni）-C-添加剂NaN_3为体系，成功地合成了高氮含量（1000- 2000 ppm）的金刚石晶体。合成金刚石晶体是立方八面体或八面体形状，具有绿色或深绿色颜色。合成金刚石的FTIR光谱表明，其氮浓度随着NaN 3添加剂的增加而增加。此外，这种添加剂的增加还导致石墨/金刚石转化的最低温度和压力的增加。我们在高含量NaN 3合成的样品中发现了氮化铁。我们认为它的存在表明Fe-Ni合金中的Fe含量减少，催化剂的特性发生变化，导致石墨/金刚石转化的最低温度和压力增加。
Diamond crystals with high nitrogen concentration, 1000–2000ppm, have been successfully synthesized from the system of powder catalyst (Fe–Ni)–C-additive NaN3in a cubic anvil high-pressure and high-temperature apparatus. The synthetic diamond crystals are cubo-octahedral or octahedral shape with a green or dark green color. The FTIR spectra of the diamond synthesized indicate that its nitrogen concentration increases with an increase of the NaN3additive. Furthermore, such additive increase also leads to an increase in the minimum temperature and pressure for graphite/diamond conversion. We found iron nitride in the sample synthesized with high content of NaN3. We believe its presence is an indication that Fe content in the Fe–Ni alloy is reduced and the characteristics of catalyst are changed, leading to the increase of the minimum temperature and pressure for graphite/diamond conversion.
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影响因子：
4.1
作者：
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通讯作者：
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影响因子：
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作者：
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影响因子：
2.1
作者：
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通讯作者：
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影响因子：
4.1
作者：
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通讯作者：
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影响因子：
4.1
作者：
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