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| 1 | 温度梯度法合成金刚石大单晶的研究进展显示文摘介绍了金刚石大单晶的温度梯度法合成技术,详细综述了影响金刚石晶体形貌、晶体品质以及生长速度等相关因素的最新进展,简要叙述了掺杂对金刚石晶体晶形、性能的影响,最后指出了温度梯度法合成金刚石大单晶的发展方向。 | 张恒涛 肖长江 尚秋元 栗正新 朱玲艳 | 2013 | 材料导报2013，27，17： | 2 |
| 2 | Synthesis of high quality type-Ib diamond crystals in carats grade显示文摘High quality type-Ib tower-shape gem-diamond crystals in carats grade were synthesized in cubic anvil high pressure apparatus (SPD-6×1200) at 5.4 GPa and 1250-1450°C. The relationship between the growth time and the weight of growth diamond has been gained. The faces of {110} and {113} were found in the synthetic diamond crystals frequently. We found that the relative growth rate of {113} face was descending with the increase of growth temperature, and that of {110} face had no obvious change with the increase of the growth temperatures and the growth time. In the work, the crystal defects were studied carefully, and the reasons for the appearance of the defects were also obtained. Some diamond crystals have been polished into the anvil of DAC (Diamond Anvil Cell) and the diamond jewelry. Compared with natural diamond crystal, synthetic diamond crystal has the merits such as small grinding quantity, low cost, etc., so it can be widely used in super high pressure field and gemstone industry. | XIAO HongYu JIA XiaoPeng MA HongAn LI ShangSheng LI Yong ZHAO Ming | 2010 | Chinese Science Bulletin2010，55，14： | 1 |
| 3 | Effects of Fe additive on diamond crystallization from carbonyl nickel powders-C system under HPHT condition显示文摘In this paper, diamond crystallization from carbonyl nickel powders-C and carbonyl nickel powders + Fe–C systems are investigated in detail at a pressure of 6.0 GPa and temperatures ranging from 1410°C–to 1435°C by temperature gradient growth. The effects of Fe additive on the crystal morphology are discussed in the diamond crystallization process.Furthermore, Fourier infrared measurement results indicate that the spectrum of the diamond obtained from Ni + Fe–C system after annealing treatment is nearly consistent with that of natural diamond crystal. We believe that this study is of benefit to a further understanding of the growth mechanism of natural diamond. | 李勇 贾晓鹏 冯云光 房超 樊丽娟 李亚东 曾祥 马红安 | 2015 | Chinese Physics B2015，24，8： | 0 |
| 4 | 超纯与掺杂金刚石大单晶的高温高压合成显示文摘金刚石是集最高硬度、最高热导率、最宽透光波段、高载流子迁移率、高击穿电压等诸多优异的物理和化学性能于一体的极限性功能材料,广泛用于钻饰、工业、科技、地学、生物医学和国防等领域。金刚石根据其内部氮和硼杂质的含量及存在形式可分为Ⅰa、Ⅰb、Ⅱa和Ⅱb四种类型。在长期对金刚石合成的研究中,本课题组已在实验室成功实现了上述四类金刚石的合成,在此基础上还研制了超纯金刚石单晶,以及氢协同掺杂、硼协同掺杂、硫协同掺杂等多元协同掺杂功能金刚石单晶,使我国成为继美国、日本、英国等国之后能够人工合成多种宝石级金刚石单晶的少数国家之一。文章对所合成的Ⅰa、Ⅰb、Ⅱa和Ⅱb四类金刚石以及超纯金刚石、高氮金刚石、硼基半导体金刚石等进行了介绍,阐述了不同类型金刚石的特点及其应用价值,对合成大尺寸、高质量、具有实际应用前景的金刚石大单晶具有重要指导意义。 | 贾晓鹏 | 2023 | 超硬材料工程2023，35，6： | 0 |
| 5 | FeNi-C-FeS体系金刚石中氮含量的研究显示文摘利用高温高压温度梯度法,在FeNi-C-FeS体系中进行了宝石级金刚石大单晶的合成研究,重点考察了FeS含量对金刚石中氮含量的影响。结果发现体系中随着掺杂FeS含量的增加,晶体品质会遭到一定程度的破坏,尤其是{100}生长区域。对晶体中氮含量而言,当掺杂FeS的量由0增加至1.25%时,{111}生长区域的氮含量与纯FeNi-C体系相比几乎没有发生变化,而{100}生长区域的氮含量却发生较大变化,远远低于纯FeNi-C体系中{100}生长区域的氮含量。这说明掺杂FeS更易对晶体的{100}生长区域产生影响,或者说S元素更容易进入{100}生长区域,这样S原子与N原子之间产生竞争,使氮原子进入金刚石的几率减少,导致{100}生长区域的氮含量急剧下降。 | 臧传义 陈奎 陈孝洲 陈立学 谌伦建 | 2011 | 功能材料2011，42，7： | 0 |
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