Investigation of Plasma Process Efficacy for the Synthesis of High Purity Silicon

高纯硅合成等离子体工艺效率研究

• 批准号: 530849-2018
• 负责人: Frenette, Mathieu
• 金额: $ 1.82万
• 依托单位: Université du Québec à Montréal
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=651173
• 关键词: Investigation; Plasma; Process; Efficacy; Synthesis

This new project of PyroGenesis Canada Inc., an active company in the design and manufacture of materials**with advanced plasma processes, is the investigation of plasma process efficacy for the synthesis of high purity**silicon. The company is faced with some challenges for this project. To properly measure the purity of the**silicon produced, a rigorous method will need to be developed to analyze impurities present in the final**material. Therefore, the company has proposed a long-term collaboration with the team of Professor Mathieu**Frenette at the Université du Québec à Montréal. The plasma atomization is a recently-developed technology**that produces fine and flowable metal powders. In this technology, the carbothermic reduction of silicon**dioxide at high temperature is carried out in the plasma. The combination of electromagnetic heating and**mixing with inductive plasma allows to purify upgraded metallurgical silicon at reasonable cost. The objective**of project is to determine the impurities such as boron, iron and phosphorus content in the silicon that will be**manufactured by plasma atomization. Boron quantification is particularly complicated by the evaporation of**boron oxides during acid digestion and Pyrogenesis will require research to address this issue. We propose to**prevent the evaporation of volatile impurities with the complexation of boron with mannitol. The size of**samples will be explored with scanning electron microscopy (SEM) and the percentage of their impurities will**be determined with energy dispersive spectroscopy (EDS) and inductively coupled plasma mass spectrometry**(ICP-MS), respectively. This project will lead to the experimental results on the properties of the impurities of**processed silicon that will be manufactured by the company. This will enable the company to design and**manufacture more appropriate products and improve their properties. This will help the growth of the company**that will have impact on the development of other Canadian industries that are active in the engineering and**processing of materials. The control of impurities of these products will also help the company deliver a better**service of production of silicon powders to these companies in Canada.

这是一家活跃在设计和制造采用先进等离子体工艺的材料**的公司，该公司的这个新项目是研究等离子体工艺合成高纯**硅的效率。该公司在这个项目上面临着一些挑战。为了适当地测量所生产的硅的纯度，需要开发一种严格的方法来分析最终材料中的杂质。因此，该公司提议与魁北克大学的Mathieu**Frenette教授团队进行长期合作。等离子雾化是一种最近发展起来的技术**，它可以生产出细小且可流动的金属粉末。在这种技术中，二氧化硅在高温下的碳热还原是在等离子体中进行的。电磁加热和**与感应等离子体混合的组合允许以合理的成本提纯升级的冶金硅。该项目的目标是确定将通过等离子体雾化制造的硅中的杂质，如硼、铁和磷的含量。硼的量化尤其复杂，因为在酸消化过程中，硼的氧化物会蒸发，而热解作用将需要研究来解决这个问题。我们建议**通过硼与甘露醇的络合来防止挥发性杂质的蒸发。样品的大小将用扫描电子显微镜(SEM)探测，杂质的百分比将分别用能量色散光谱(EDS)和电感耦合等离子体质谱(ICPMS)测定。该项目将导致该公司将生产的**加工硅的杂质性质的实验结果。这将使公司能够设计和**制造更合适的产品，并改善它们的性能。这将有助于公司**的增长，这将对活跃在材料工程和**加工领域的其他加拿大行业的发展产生影响。对这些产品杂质的控制也将帮助该公司为加拿大的这些公司提供更好的硅粉生产服务。