Premium
Comparative investigation of ultrafast thermal shock of Ti 3 AlC 2 ceramic in water and air
Author(s) -
Hu Baotong,
Bao Yiwang,
Su Xiaojia,
Wan Detian,
Feng Qingguo,
Grasso Salvatore,
Hu Chunfeng
Publication year - 2021
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13811
Subject(s) - materials science , thermal shock , ceramic , flexural strength , quenching (fluorescence) , composite material , oxide , thermal diffusivity , ultimate tensile strength , residual strength , residual stress , thermal , metallurgy , thermodynamics , physics , quantum mechanics , fluorescence
In this work, ultrafast thermal shock of Ti 3 AlC 2 ceramic was evaluated in water and air by utilizing the induction heating method. First, the annealed samples were heated to the set temperature in tens of seconds and dropped into the cooling water within 0.1 s which is rather short not to degrade the sample temperature. Compared to the traditional thermal shock method when quenching in water, the abnormal thermal shock phenomenon did not occur, which is owing to that no dense oxide layers were formed on the samples’ surface to act as the thermal barrier. The continuous decrease in residual flexural strength when quenched in water is associated with water infiltration, chemical reaction, and large surface tensile stress. The residual strength has 27.25 MPa upon 1250°C. Second, at the same testing temperature, the residual flexural strength when quenched in air maintains a high value of 388 MPa up to 1400°C. Dense oxide scales existed on the quenched surface of Ti 3 AlC 2 samples. The results exhibit that Ti 3 AlC 2 ceramic possesses excellent thermal shock resistance in water and air, suitable to be applied in extreme environments.