贾涵,高培虎,郭永春,杨忠,王建东,李全平.热喷涂热障涂层孔隙与涂层性能关系研究进展[J].表面技术,2018,47(6):151-160.
JIA Han,GAO Pei-hu,GUO Yong-chun,YANG Zhong,WANG Jian-dong,LI Quan-ping.Relationship between Pores on Thermal Sprayed Thermal Barrier Coatings and Coating Properties[J].Surface Technology,2018,47(6):151-160
热喷涂热障涂层孔隙与涂层性能关系研究进展
Relationship between Pores on Thermal Sprayed Thermal Barrier Coatings and Coating Properties
投稿时间:2018-03-16  修订日期:2018-06-20
DOI:10.16490/j.cnki.issn.1001-3660.2018.06.022
中文关键词:  热障涂层  孔隙  力学性能  热导率  隔热性能  调控
英文关键词:thermal barrier coatings  pore  mechanical properties  thermal conductivity  heat insulation performance  regulation
基金项目:国家自然科学基金项目(51771140);超高温结构复合材料重点实验室创新基金(6142911010202);陕西省创新人才推进计划-科技创新团队(2017KCT-05)
作者单位
贾涵 西安工业大学,西安 710021 
高培虎 西安工业大学,西安 710021 
郭永春 西安工业大学,西安 710021 
杨忠 西安工业大学,西安 710021 
王建东 中国人民解放军陆军装甲兵军事代表局驻西安地区军事代表室,西安 710032 
李全平 北方通用动力集团有限公司,山西 大同 030032 
AuthorInstitution
JIA Han Xi'an Technological University, Xi'an 710021, China 
GAO Pei-hu Xi'an Technological University, Xi'an 710021, China 
GUO Yong-chun Xi'an Technological University, Xi'an 710021, China 
YANG Zhong Xi'an Technological University, Xi'an 710021, China 
WANG Jian-dong Xi'an Military Delegate Office, Military Mission Bureau of PLA Armoured Force, Xi'an 710032, China 
LI Quan-ping North General Power Group Co., Ltd, Datong 030032, China 
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中文摘要:
      孔隙在热障涂层中较为常见,孔隙对热障涂层的性能有利有弊。对热障涂层陶瓷层中孔隙的形成机理进行了综合分析,总结了热障涂层孔隙结构的调控方法,讨论了孔隙结构特征对热障涂层隔热性能和力学性能的影响。孔隙结构的引入将引起力学性能的下降,同时降低热障涂层的热导率,提高隔热效果。孔隙结构特征参数包括孔隙形状、孔隙间距、孔隙倾斜角、孔隙高宽比等,其中孔隙的倾斜角和高宽比对涂层导热性能的影响尤为重要,是孔隙结构的关键特征参数。通过原始粉末孔隙结构的保留、造孔剂(有机造孔剂、无机造孔剂)的搭配造孔、制备工艺(临界等离子喷涂参数、粒子扁平率等)的调节以及后续的孔隙处理,可实现热障涂层孔隙结构的调控。在实际应用过程中应同时兼顾力学性能和隔热性能,最重要的是保证热障涂层的有效寿命,需要综合考虑力学性能与导热性能的匹配。通过热障涂层孔隙结构特征的设计及分布控制,可实现孔隙结构高性能、高可靠性热障涂层的制备。
英文摘要:
      Pores are common in the thermal barrier coatings (TBCs), and its existence has both advantages and disadvantages on performance of TBCs. Formation mechanism of pores in ceramic layer of TBCs was analyzed comprehensively. Regulating methods of pore structure on TBCs were summarized. The effects of pore structure characteristics on heat insulation performance and mechanical properties of TBCs were investigated. The introduction of pore structure would degrade mechanical properties and thermal conductivity, and improve heat insulation effect. Pore structure characteristic parameters included pore shape, distance, slant angle and aspect ratio were proposed. Pore slant angle and aspect ratio were of great significance to thermal conductivity of TBCs, which were also key characteristic parameters of pore structure. The pore structure of TBCs could be regulated by retaining porous structure of original powder, collocating pore-forming with pore formers (organic pore former, inorganic pore former), adjusting preparation processes (critical plasma spray parameter, particle flatness ratio) and treating pores subsequently. The mechanical properties and heat insulation performance shall be adjusted to guarantee effective life of TBCs. High performance and reliable TBCs with pore structure can be prepared based upon structure characteristic design and distribution control of porous structure of TBCs.
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