程涛涛,王志平,戴士杰,丁坤英,马祥.SiC晶须对等离子喷涂YSZ涂层显微结构的影响[J].稀有金属材料与工程,2021,50(8):2700~2707.[Cheng Taotao,Wang Zhiping,Dai Shijie,Ding Kunying,Ma Xiang.Influence of SiC Whiskers on Microstructure of APS YSZ Coating[J].Rare Metal Materials and Engineering,2021,50(8):2700~2707.]
SiC晶须对等离子喷涂YSZ涂层显微结构的影响
投稿时间:2020-06-16  修订日期:2020-06-29
中文关键词:  SiC晶须  等离子喷涂  YSZ涂层  显微结构
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:
      为了研究SiC晶须对等离子喷涂YSZ(Y2O3部分稳定的ZrO2)涂层显微结构的影响规律,采用喷雾造粒技术制备了晶须含量分别为0%、1%、2%和3%(质量分数)的团聚YSZ颗粒(0#、1#、2#和3#粉末),利用等离子喷涂技术(APS)分别制备了0#、1#、2#和3#等4组涂层。利用扫描电镜(SEM)及金相显微镜等测试分析设备研究SiC晶须分散工艺和定量表征方法,以及团聚颗粒的形态和涂层的显微结构,并分析了含晶须涂层的成型过程。结果表明:机械搅拌时间增加至5 h时,晶须具有较好的分散程度,对应的晶须面积分数为11.03%。含晶须的团聚颗粒主要呈“水滴状”和“纺锤状”,1#、2#和3#粉末中“水滴状”和“纺锤状”团聚颗粒的数量比例分别为16.5%,22.7%和39.3%。由于非水平态晶须对颗粒中未熔融原粉末在冲击和铺展过程的阻碍作用,涂层的孔隙率随着晶须含量的增加而增加,0#涂层的孔隙率为3.89%,1#、2#和3#涂层的孔隙率分别是0#涂层的3.15倍、4.17倍和7.52倍。
Influence of SiC Whiskers on Microstructure of APS YSZ Coating
英文关键词:SiC whiskers  APS  YSZ coating  microstructure
英文摘要:
      Agglomerated YSZ (Y2O3 partially stabilized ZrO2) particles with 0wt%, 1wt%, 2wt% and 3wt% of whiskers (named as 0#,1#, 2# and 3# powders, respectively) were prepared by spray granulation technology. Four groups of coatings (0#, 1#, 2# and 3# coating) were prepared by APS (atmospheric plasma spraying). The dispersion and quantitative characterization of SiC whiskers, morphology of agglomerated particles and microstructure of the coatings were studied by SEM (scanning electron microscopy) and light-optical microscopy, and the forming process of the coating containing SiC whiskers was analyzed. The result shows that as the stirring time increases to 5 h, the whiskers show better dispersion and the corresponding area percentage of whiskers of the specimen is 11.03%. The particles containing whiskers are mainly “droplet shaped” and “spindle shaped”, and the percentage of these two streamlined particles in 1#, 2# and 3# powders is 16.5%, 22.7% and 39.3%, respectively. Due to the obstructing effect of non-horizontal state whiskers on impacting and spreading process of unmelted raw powders, the porosity increases as the whiskers content increases. The porosity of 0# coating is 3.89%, while the porosity of 1#, 2# and 3# coatings is 3.15, 4.17 and 7.52 times larger than that of 0# coating, respectively.
作者单位E-mail
程涛涛 河北工业大学 机械工程学院天津 300130
中国民航大学 天津市民用航空器适航与维修重点实验室天津 300300 
cheng604@126.com 
王志平 河北工业大学 机械工程学院天津 300130
中国民航大学 天津市民用航空器适航与维修重点实验室天津 300300 
cheng604@126.com 
戴士杰 河北工业大学 机械工程学院天津 300130  
丁坤英 中国民航大学 天津市民用航空器适航与维修重点实验室天津 300300  
马祥 北京飞机维修工程有限公司 发动机大修部北京 100621  
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