Composition and structural identification of silicon particles in diamond wire saw silicon powder

IF 1.4 4区化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Phosphorus, Sulfur, and Silicon and the Related Elements Pub Date : 2024-01-02 DOI:10.1080/10426507.2023.2242996

Tian Zhang , Kuixian Wei , Shicong Yang , Wenhui Ma

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引用次数: 0

Abstract

In this study, the content and calculation equations of each substance in diamond wire saw silicon powder (DWSSP) were determined. Initially, the presence of amorphous SiO₂ was proven by crystal transformation. Then, the SiO₂ content was determined by SiO₂-CaO phase diagram analysis, and the SiO_x content was determined by using the oxygen conservation rule. The variation trend between the SiO₂, SiO_x, and Si contents and the O content was determined, according to the calculated SiO₂ and SiO_x content. In addition, linear fitting was performed on the SiO₂, SiO_x, and Si contents of five DWSSP raw materials, and a calculation equation for SiO₂, SiO_x, and Si was obtained through the total O content. The three-layer structure of DWSSP was revealed, the DWSSP consisting of a Si core, an intermediate SiO_x layer, and a SiO₂ shell. This study can accurately identify the content of SiO₂, SiO_x, and Si in DWSSP based on the detected oxygen content, and provide a better theoretical basis for the process selection and design for silicon recovery or high value materials preparation.

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金刚石绳锯硅粉中硅颗粒的组成和结构鉴定

本研究确定了金刚石线锯硅粉（DWSSP）中各种物质的含量和计算公式。首先，通过晶体转变证明了非晶态 SiO2 的存在。然后，通过 SiO2-CaO 相图分析确定了 SiO2 的含量，并利用氧守恒定律确定了 SiOx 的含量。根据计算出的 SiO2 和 SiOx 含量，确定了 SiO2、SiOx 和 Si 含量与 O 含量之间的变化趋势。此外，还对五种 DWSSP 原料的 SiO2、SiOx 和 Si 含量进行了线性拟合，并通过总 O 含量得到了 SiO2、SiOx 和 Si 的计算公式。揭示了 DWSSP 的三层结构，即 DWSSP 由 Si 核、中间 SiOx 层和 SiO2 壳组成。该研究可根据检测到的氧含量准确确定 DWSSP 中 SiO2、SiOx 和 Si 的含量，为硅回收或高价值材料制备的工艺选择和设计提供更好的理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Phosphorus, Sulfur, and Silicon and the Related Elements 化学-无机化学与核化学

CiteScore

2.60

自引率

7.70%

发文量

103

审稿时长

2.1 months

期刊介绍： Phosphorus, Sulfur, and Silicon and the Related Elements is a monthly publication intended to disseminate current trends and novel methods to those working in the broad and interdisciplinary field of heteroatom chemistry.