文献类型：期刊文献

中文题名：基于碳化硼包覆的硼表面改性及燃烧性能研究

英文题名：Surface modification and combustion mechanism of boron particles coated by boron carbide

作者：叶元滔[1];胡旭[1];朱小飞[2];雷天天[1];黄永民[1]

机构：[1]特种功能高分子材料及相关技术教育部重点实验室,化学与分子工程学院,华东理工大学,上海200237;[2]上海宇航系统工程研究所,上海201109

年份：2025

卷号：48

期号：3

起止页码：426

中文期刊名：固体火箭技术

外文期刊名：Journal of Solid Rocket Technology

收录：;北大核心:【北大核心2023】；

基金：上海市青年科技英才扬帆计划(21YF1408800);中央高校基本科研业务费专项资金(JKD01251701)。

语种：中文

中文关键词：硼颗粒;表面改性;碳化硼;包覆;气相沉积;燃烧性能

外文关键词：boron particles;surface modification;boron carbide;coating;vapor deposition;combustion performance

摘要：针对硼(B)颗粒表面氧化层导致点火延迟时间长及燃烧效率低的问题,采用气相反应沉积法在无定形B颗粒表面制备碳化硼(B_(4)C)包覆层进行改性,并通过多种表征技术(SEM,EDS,XRD,XPS,TG-DSC)及点火燃烧实验,研究了改性硼颗粒(B@B_(4)C)的形貌、微观结构、物相组成、热氧化特性(起始氧化温度、放热量)和实际点火燃烧行为,分析了B与B_(4)C界面处的C原子迁移过程对B颗粒点火和燃烧性能的影响规律。结果表明,气相反应沉积法可以在B表面形成稳定的B—C化学键合,实现B_(4)C包覆;B_(4)C包覆可以有效提升B颗粒的点火燃烧性能,B@B_(4)C颗粒的起始氧化温度相较于未改性B下降160.70℃,反应放热量提升86.4%,并在1000℃常压环境下成功实现了点火和高效燃烧,性能远超B颗粒,验证了B_(4)C包覆对B颗粒燃烧性能的促进作用;在B与B_(4)C界面处发生的C原子迁移过程是促进B颗粒点火和燃烧性能提升的核心机制。
To address the issues of long ignition delay time and low combustion efficiency caused by the surface oxide layer of boron particles,a boron carbide(B_(4)C)coating was prepared on the surface of amorphous boron particles by gas?phase reaction dep?osition for modification.The morphology,microstructure,phase composition,thermal oxidation characteristics(initial oxidation tem?perature,heat release),and actual ignition and combustion behavior of the modified boron particles(B@B_(4)C)were investigated through various characterization techniques(SEM,EDS,XRD,XPS,TG?DSC)and ignition combustion experiments.The influence of the carbon atom migration process at the boron and B_(4)C interface on the ignition and combustion performance of boron particles was analyzed.The results show that the gas?phase reaction deposition method can form stable B—C chemical bonds on the boron sur?face,achieving B_(4)C coating.The B_(4)C coating can effectively improve the ignition and combustion performance of boron particles.The initial oxidation temperature of B@B_(4)C particles is 160.70℃lower than that of unmodified boron(B),and the heat release during the reaction increases by 86.4%.Ignition and efficient combustion were successfully achieved at 1000℃and atmospheric pressure,with performance far exceeding that of B particles,verifying the promoting effect of B_(4)C coating on the combustion performance of boron particles.The carbon atom migration process at the boron and B_(4)C interface is the core mechanism for improving the ignition and combustion performance of boron particles.