Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of aluminum oxide-toughened aluminum niobate ceramic coating with continuously-changing components
The invention relates to the technical field of thermal barrier coatings, and particularly discloses a preparation method of an aluminum oxide-toughened aluminum niobate ceramic coating with continuously-changing components. The preparation methodcomprises the following steps: mixing two or more Al2O3 powders and Nb2O5 powders with different molar ratios x, and separately carrying out pressurelesssintering to obtain a plurality of sintered bodies; crushing the plurality of sintered bodies, and conducting sieving to obtain a plurality of Al2O3-toughened AlNbO4 ceramic powders; respectively mixing the plurality of ceramic powders to form n parts of mixed ceramic powders, wherein the volume fraction of at least one or more than one ceramic powders in the n parts of mixed ceramic powders is continuously changing; and sequentially depositing the n parts of mixed ceramic powders on a base material to obtain the ceramic coating with continuously-changing components. According the ceramic coating obtained through the method, it is guaranteed that the ceramic coating has the high toughness of original aluminum oxide-toughened aluminum niobate; and meanwhile, experimental detection resultsshow that the heat conductivity of the coating does not exceed 1.25 W/m/K, so the requirement of the thermal barrier coating for low heat conductivity is met.
本发明涉及热障涂层技术领域，具体公开了一种成分连续变化的氧化铝增韧铌酸铝陶瓷涂层的制备方法，取两种以上不同摩尔比为x的Al2O3粉末与Nb2O5粉末混合后分别进行无压烧结，得到多种烧结体，将多种烧结体粉碎后过筛得到多种Al2O3增韧AlNbO4陶瓷粉体；将多种陶瓷粉体分别混合成n份混合陶瓷粉体，n份混合陶瓷粉体中至少一种以上的陶瓷粉体的体积分数为连续变化；将n份混合陶瓷粉体依次沉积到基体材料上得到成分连续变化的陶瓷涂层。通过本专利得到的陶瓷涂层，既保证陶瓷涂层具备原本氧化铝增韧铌酸铝的高韧性，同时通过实验检测得到热导率未超过1.25W·m‑1·K‑1，满足热障涂层对低热导率的需求。
Preparation method of aluminum oxide-toughened aluminum niobate ceramic coating with continuously-changing components
The invention relates to the technical field of thermal barrier coatings, and particularly discloses a preparation method of an aluminum oxide-toughened aluminum niobate ceramic coating with continuously-changing components. The preparation methodcomprises the following steps: mixing two or more Al2O3 powders and Nb2O5 powders with different molar ratios x, and separately carrying out pressurelesssintering to obtain a plurality of sintered bodies; crushing the plurality of sintered bodies, and conducting sieving to obtain a plurality of Al2O3-toughened AlNbO4 ceramic powders; respectively mixing the plurality of ceramic powders to form n parts of mixed ceramic powders, wherein the volume fraction of at least one or more than one ceramic powders in the n parts of mixed ceramic powders is continuously changing; and sequentially depositing the n parts of mixed ceramic powders on a base material to obtain the ceramic coating with continuously-changing components. According the ceramic coating obtained through the method, it is guaranteed that the ceramic coating has the high toughness of original aluminum oxide-toughened aluminum niobate; and meanwhile, experimental detection resultsshow that the heat conductivity of the coating does not exceed 1.25 W/m/K, so the requirement of the thermal barrier coating for low heat conductivity is met.
本发明涉及热障涂层技术领域，具体公开了一种成分连续变化的氧化铝增韧铌酸铝陶瓷涂层的制备方法，取两种以上不同摩尔比为x的Al2O3粉末与Nb2O5粉末混合后分别进行无压烧结，得到多种烧结体，将多种烧结体粉碎后过筛得到多种Al2O3增韧AlNbO4陶瓷粉体；将多种陶瓷粉体分别混合成n份混合陶瓷粉体，n份混合陶瓷粉体中至少一种以上的陶瓷粉体的体积分数为连续变化；将n份混合陶瓷粉体依次沉积到基体材料上得到成分连续变化的陶瓷涂层。通过本专利得到的陶瓷涂层，既保证陶瓷涂层具备原本氧化铝增韧铌酸铝的高韧性，同时通过实验检测得到热导率未超过1.25W·m‑1·K‑1，满足热障涂层对低热导率的需求。
Preparation method of aluminum oxide-toughened aluminum niobate ceramic coating with continuously-changing components
一种成分连续变化的氧化铝增韧铌酸铝陶瓷涂层的制备方法
FENG JING (Autor:in) / WANG YITAO (Autor:in) / CHEN LIN (Autor:in) / ZHENG QI (Autor:in) / YANG KAILONG (Autor:in) / WANG JUN (Autor:in) / ZHANG ZHIDONG (Autor:in) / LI ZHENJUN (Autor:in) / WANG FENG (Autor:in)
17.11.2020
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2024
Preparation method of toughened aluminum oxide ceramic body
| Europäisches Patentamt | 2022
Toughened aluminum oxide ceramic and preparation method thereof
| Europäisches Patentamt | 2024
Preparation method of graphene toughened aluminum oxide composite ceramic
| Europäisches Patentamt | 2022
Preparation method of two-dimensional ceramic material toughened aluminum oxide ceramic
| Europäisches Patentamt | 2023