固体火箭技术2025，Vol.48Issue(2)：281-290,10.DOI:10.7673/j.issn.1006-2793.2025.02.013
梯度结构热防护涂层增材制造成形与性能研究
Additive manufacturing and properties of gradient structured heat protection coatings
摘要
Abstract
The development of hypersonic vehicles necessitates the creation of novel heat protection structure and technology that can survive in extreme thermal conditions.Advances in its"discrete-accumulation"characteristics,additive manufacturing(AM)technique of"online metering-in situ mixing-variable-component extrusion-additive manufacturing"was proposed to deposit anti-ab-lation/thermal insulation components at specific spatial locations,offering a customization method of gradient structured heat protec-tion coatings.The rheological behavior and thermal protection performance of resin,anti-ablation,and thermal insulation components were studied,along with the high-throughput mixing capacity and gradient-structure preparation ability of the AM system.Continuous lines with gradient structure,radial gradient structures,and axial alternating/continuous gradient structures were successfully fabri-cated.A gradient heat shielding sample(100 mm×100 mm×5.5 mm)with porosities ranging from 0.8%to 47.8%was prepared.The results show that the peak temperature on the surface of the specimen is 616℃,the peak temperature on the back is 45℃,and the ablation depth is-0.81 mm.The surface of the specimen is flat and the coating does not fall off.Compared to homogeneous coat-ings,the gradient-structured coatings exhibit superior ablation resistance,with a 24.6%reduction in density.关键词
热防护/梯度结构/增材制造/多材料/涂层Key words
heat protection/additive manufacturing/gradient structure/multi-material/coating引用本文复制引用
蔡思凡,周童,刘滔,王波,方淦,吴文杰,曹良成..梯度结构热防护涂层增材制造成形与性能研究[J].固体火箭技术,2025,48(2):281-290,10.基金项目
中国科学院西部青年学者项目. （）
