Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of rare earth tantalate or niobate thermal barrier coating
The invention relates to the technical field of thermal barrier coatings, and particularly discloses a preparation method of a rare earth tantalate or niobate thermal barrier coating. The preparationmethod comprises the following steps: mixing more than two different rare earth tantalate (RETaO4) or niobate (RENbO4) ceramic powder into n parts of mixed ceramic powder, wherein the volume fractionof at least more than one rare earth tantalate or niobate ceramic component in the n parts of mixed ceramic powder is continuously increased or decreased; and sequentially depositing n parts of mixedceramic powder on the base material to obtain the multi-gradient rare earth tantalate or niobate thermal barrier coating. According to the scheme, it can be guaranteed that the thermal barrier coatinghas the high expansion coefficient of original rare earth niobium/tantalite ceramic (RENb/TaO4) ceramic, meanwhile, the thermal conductivity of the thermal barrier coating is greatly reduced, the thermal conductivity detected in an experiment does not exceed 1.20 W.m<-1>.K<-1>, and the requirement of the thermal barrier coating for low thermal conductivity is met.
本发明涉及热障涂层技术领域，具体公开了一种稀土钽酸盐或铌酸盐热障涂层的制备方法，包括以下步骤：取两种以上不同的稀土钽酸盐(RETaO4)或铌酸盐(RENbO4)陶瓷粉末混合成n份混合陶瓷粉体，n份混合陶瓷粉体中至少一种以上的稀土钽酸盐或铌酸盐陶瓷组份的体积分数为连续递增或递减的变化；将n份混合陶瓷粉体依次沉积到基体材料上得到多元梯度的稀土钽酸盐或铌酸盐热障涂层。本专利的方案既能够保证热障涂层具备原本稀土铌/钽酸盐陶瓷(RENb/TaO4)陶瓷的高膨胀系数，同时其热导率也大幅度的下降，通过实验检测得到热导率未超过1.20W·m‑1·K‑1，满足热障涂层对低热导率的需求。
Preparation method of rare earth tantalate or niobate thermal barrier coating
The invention relates to the technical field of thermal barrier coatings, and particularly discloses a preparation method of a rare earth tantalate or niobate thermal barrier coating. The preparationmethod comprises the following steps: mixing more than two different rare earth tantalate (RETaO4) or niobate (RENbO4) ceramic powder into n parts of mixed ceramic powder, wherein the volume fractionof at least more than one rare earth tantalate or niobate ceramic component in the n parts of mixed ceramic powder is continuously increased or decreased; and sequentially depositing n parts of mixedceramic powder on the base material to obtain the multi-gradient rare earth tantalate or niobate thermal barrier coating. According to the scheme, it can be guaranteed that the thermal barrier coatinghas the high expansion coefficient of original rare earth niobium/tantalite ceramic (RENb/TaO4) ceramic, meanwhile, the thermal conductivity of the thermal barrier coating is greatly reduced, the thermal conductivity detected in an experiment does not exceed 1.20 W.m<-1>.K<-1>, and the requirement of the thermal barrier coating for low thermal conductivity is met.
本发明涉及热障涂层技术领域，具体公开了一种稀土钽酸盐或铌酸盐热障涂层的制备方法，包括以下步骤：取两种以上不同的稀土钽酸盐(RETaO4)或铌酸盐(RENbO4)陶瓷粉末混合成n份混合陶瓷粉体，n份混合陶瓷粉体中至少一种以上的稀土钽酸盐或铌酸盐陶瓷组份的体积分数为连续递增或递减的变化；将n份混合陶瓷粉体依次沉积到基体材料上得到多元梯度的稀土钽酸盐或铌酸盐热障涂层。本专利的方案既能够保证热障涂层具备原本稀土铌/钽酸盐陶瓷(RENb/TaO4)陶瓷的高膨胀系数，同时其热导率也大幅度的下降，通过实验检测得到热导率未超过1.20W·m‑1·K‑1，满足热障涂层对低热导率的需求。
Preparation method of rare earth tantalate or niobate thermal barrier coating
一种稀土钽酸盐或铌酸盐热障涂层的制备方法
FENG JING (Autor:in) / ZHENG QI (Autor:in) / YANG KAILONG (Autor:in) / WANG YITAO (Autor:in) / WANG JUN (Autor:in) / CHEN LIN (Autor:in) / SONG PENG (Autor:in) / GE ZHENHUA (Autor:in) / LI ZHENJUN (Autor:in) / WANG FENG (Autor:in)
20.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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