孙恒辉,雷心瑜,袁新强,蒋鹏,张伟,张立斋

• 1:陕西理工大学材料科学与工程学院
• 2:陕西理工大学矿渣综合利用环保技术国家地方联合工程实验室
• 3:西安交通大学材料力学行为国家重点实验室

摘要(Abstract)：

钨掺杂M相二氧化钒(W-VO_2(M))有效降低了VO_2金属相(低温单斜相，M)到绝缘体相(高温四方金红石相，R)的可逆相转变温度(T_c),显著提高了VO_2在智能窗领域的应用价值。然而，W-VO_2(M)所表现出的较宽热滞回线宽度(ΔT_c>10℃)对其应用造成了一定的限制。为了解决这一问题，本研究以降低W-VO_2(M)的ΔT_c为目标，研究了W掺杂量与退火温度对W-VO_2物相结构及相变性能的影响。结果表明：随着W掺杂量的增加，W-VO_2粉体的T_c降低，并且ΔT_c较窄；退火温度的升高可以提高W-VO_2粉体的结晶度和分散度，但温度过高，会加速VO_2晶体结构的破坏，使其在恢复到室温后无法从R相转变为M相；当W掺杂量为6.0 at%,退火温度为700℃时，采用水热-退火两步法制备得到的W-VO_2(M)粉体表现出接近室温使用的T_c(T_c=36.83℃),同时具有较窄的ΔT_c(ΔT_c=6.63℃)。

关键词(KeyWords)： W掺杂;水热-退火两步法;W-VO_2(M);智能窗;相变性能

Abstract:

Keywords:

基金项目(Foundation): 陕西省技术创新引导计划项目(2021CGBX-39);; 陕西理工大学2023年大学研究生创新基金项目(SLGYCX2303);; 2022年陕西省科技厅青年项目(2023-JC-QN-0476);; 2023年陕西省教育厅一般专项项目(23JK0375);; 2022年陕西理工大学人才启动项目(SLGRCQD2207);; 陕西省重点研发计划社会发展领域项目(2024SF-YBXM-638)

作者(Author): 孙恒辉,雷心瑜,袁新强,蒋鹏,张伟,张立斋

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