热喷涂技术
熱噴塗技術
열분도기술
THERMAL SPRAY TECHNOLOGY
2012年
4期
1-5
,共5页
王建江%娄鸿飞%蔡旭东%温晋华
王建江%婁鴻飛%蔡旭東%溫晉華
왕건강%루홍비%채욱동%온진화
吸波材料%飞行燃烧%自反应淬熄法%空心陶瓷微珠
吸波材料%飛行燃燒%自反應淬熄法%空心陶瓷微珠
흡파재료%비행연소%자반응쉬식법%공심도자미주
Absorbent%Fly combustion%Self-reaction quenching technology%Hollow ceramic microspheres
含铁氧体成分的空心复相陶瓷微珠是一种新型轻质吸波材料。本文以Al-TiO2-Fe-Fe2O3-MnO2-蔗糖-环氧树脂为反应体系，经球磨、烘干、碳化、粉碎、筛分制成粒径为50-90μ的团聚粉，利用自反应淬熄技术熔射团聚粉获得了含铁氧体成分的空心复相陶瓷微珠。用SEM表征了淬熄前后团聚粉的形貌变化，通过高速摄影技术研究分析了团聚粉粒子在熔射过程中的飞行燃烧行为。试验结果表明，团聚粉粒子在飞行燃烧过程中经历受热蓄能、热释放与后燃烧三个阶段形成空心陶瓷熔滴，该熔滴在大过冷条件下凝固结晶最终形成空心陶瓷微珠。
含鐵氧體成分的空心複相陶瓷微珠是一種新型輕質吸波材料。本文以Al-TiO2-Fe-Fe2O3-MnO2-蔗糖-環氧樹脂為反應體繫，經毬磨、烘榦、碳化、粉碎、篩分製成粒徑為50-90μ的糰聚粉，利用自反應淬熄技術鎔射糰聚粉穫得瞭含鐵氧體成分的空心複相陶瓷微珠。用SEM錶徵瞭淬熄前後糰聚粉的形貌變化，通過高速攝影技術研究分析瞭糰聚粉粒子在鎔射過程中的飛行燃燒行為。試驗結果錶明，糰聚粉粒子在飛行燃燒過程中經歷受熱蓄能、熱釋放與後燃燒三箇階段形成空心陶瓷鎔滴，該鎔滴在大過冷條件下凝固結晶最終形成空心陶瓷微珠。
함철양체성분적공심복상도자미주시일충신형경질흡파재료。본문이Al-TiO2-Fe-Fe2O3-MnO2-자당-배양수지위반응체계，경구마、홍간、탄화、분쇄、사분제성립경위50-90μ적단취분，이용자반응쉬식기술용사단취분획득료함철양체성분적공심복상도자미주。용SEM표정료쉬식전후단취분적형모변화，통과고속섭영기술연구분석료단취분입자재용사과정중적비행연소행위。시험결과표명，단취분입자재비행연소과정중경력수열축능、열석방여후연소삼개계단형성공심도자용적，해용적재대과랭조건하응고결정최종형성공심도자미주。
Hollow multiphase ceramic microspheres including ferrite is a new kind of lightweight absorbert. Take AI-TiO2-Fe-Fe2O3-MnO2-sucrose-epoxy resin as reaction system, agglomerate powders are prepared in the size between 50 and 90μm by bailing, drying, and carbonation, grinding and sieving process. Hollow multiphase ceramic microspheres including ferrite was obtained through spraying and melting agglomerate powders by self-reactive quenching technology. Flying combustion process of agglomerate powders is analyzed by high-speed camera method, and surface morphology is characterized by SEM. The results show that three phases compose the fly combustion of agglomerate powders: heat storage, heat releasing and after combustion, then hollow ceramic beads are formed. Hollow ceramic microspheres are formed by solidification in high supercooling.
