Ablation behaviors of Ir–Al intermetallic coatings in a plasma wind tunnel

Yuanlin Ai; Shuxin Bai; Li'an Zhu; Yicong Ye; Hong Zhang; Shun Li; Yu Tang; Kaili Zhang; Ruixin Wang

doi:10.1016/j.surfcoat.2019.04.020

Ablation behaviors of Ir–Al intermetallic coatings in a plasma wind tunnel

Yuanlin Ai
, Shuxin Bai
, Li'an Zhu^*
, Yicong Ye
, Hong Zhang
, Shun Li
, Yu Tang
, Kaili Zhang
, Ruixin Wang

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

15 Citations (Scopus)

Abstract

The ablation behaviors of an as-annealed aluminized Ir (IrAl/Ir) coating sample and two aluminized Ir (IrAl _2.7(3) /IrAl/Ir) coating samples were investigated in a plasma wind tunnel for up to 2000s. The IrAl/Ir and IrAl _2.7(3) /IrAl/Ir coating samples showed quite different thermal responses, with ablation resistance limits of ~3.35 MW/m² and ~3.75 MW/m² , respectively, due to their different oxidation mechanisms. The failure mechanisms of both Ir–Al intermetallic coating samples were closely related to the melting of Al₂O₃ coating due to over-temperature. The results indicated that the Ir–Al is a promising non-ablative thermal protection coating material used in non-equilibrium oxidizing environment up to 2000 °C.

Original language	English
Pages (from-to)	302-310
Journal	Surface and Coatings Technology
Volume	367
Online published	6 Apr 2019
DOIs	https://doi.org/10.1016/j.surfcoat.2019.04.020
Publication status	Published - 15 Jun 2019
Externally published	Yes

Research Keywords

Ablation resistance
Intermetallic coating
Oxidation
Plasma wind tunnel

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@article{3828c2d1ec2c4a25a3bf9f14ff4615df,

title = "Ablation behaviors of Ir–Al intermetallic coatings in a plasma wind tunnel",

abstract = "The ablation behaviors of an as-annealed aluminized Ir (IrAl/Ir) coating sample and two aluminized Ir (IrAl 2.7(3) /IrAl/Ir) coating samples were investigated in a plasma wind tunnel for up to 2000s. The IrAl/Ir and IrAl 2.7(3) /IrAl/Ir coating samples showed quite different thermal responses, with ablation resistance limits of \textasciitilde{}3.35 MW/m2 and \textasciitilde{}3.75 MW/m2 , respectively, due to their different oxidation mechanisms. The failure mechanisms of both Ir–Al intermetallic coating samples were closely related to the melting of Al2 O3 coating due to over-temperature. The results indicated that the Ir–Al is a promising non-ablative thermal protection coating material used in non-equilibrium oxidizing environment up to 2000 °C.",

keywords = "Ablation resistance, Intermetallic coating, Oxidation, Plasma wind tunnel",

author = "Yuanlin Ai and Shuxin Bai and Li'an Zhu and Yicong Ye and Hong Zhang and Shun Li and Yu Tang and Kaili Zhang and Ruixin Wang",

year = "2019",

month = jun,

day = "15",

doi = "10.1016/j.surfcoat.2019.04.020",

language = "English",

volume = "367",

pages = "302--310",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Ablation behaviors of Ir–Al intermetallic coatings in a plasma wind tunnel

AU - Ai, Yuanlin

AU - Bai, Shuxin

AU - Zhu, Li'an

AU - Ye, Yicong

AU - Zhang, Hong

AU - Li, Shun

AU - Tang, Yu

AU - Zhang, Kaili

AU - Wang, Ruixin

PY - 2019/6/15

Y1 - 2019/6/15

N2 - The ablation behaviors of an as-annealed aluminized Ir (IrAl/Ir) coating sample and two aluminized Ir (IrAl 2.7(3) /IrAl/Ir) coating samples were investigated in a plasma wind tunnel for up to 2000s. The IrAl/Ir and IrAl 2.7(3) /IrAl/Ir coating samples showed quite different thermal responses, with ablation resistance limits of ~3.35 MW/m2 and ~3.75 MW/m2 , respectively, due to their different oxidation mechanisms. The failure mechanisms of both Ir–Al intermetallic coating samples were closely related to the melting of Al2 O3 coating due to over-temperature. The results indicated that the Ir–Al is a promising non-ablative thermal protection coating material used in non-equilibrium oxidizing environment up to 2000 °C.

AB - The ablation behaviors of an as-annealed aluminized Ir (IrAl/Ir) coating sample and two aluminized Ir (IrAl 2.7(3) /IrAl/Ir) coating samples were investigated in a plasma wind tunnel for up to 2000s. The IrAl/Ir and IrAl 2.7(3) /IrAl/Ir coating samples showed quite different thermal responses, with ablation resistance limits of ~3.35 MW/m2 and ~3.75 MW/m2 , respectively, due to their different oxidation mechanisms. The failure mechanisms of both Ir–Al intermetallic coating samples were closely related to the melting of Al2 O3 coating due to over-temperature. The results indicated that the Ir–Al is a promising non-ablative thermal protection coating material used in non-equilibrium oxidizing environment up to 2000 °C.

KW - Ablation resistance

KW - Intermetallic coating

KW - Oxidation

KW - Plasma wind tunnel

UR - https://www.scopus.com/pages/publications/85064090106

UR - https://www.scopus.com/pages/publications/85064090106#tab=impact

U2 - 10.1016/j.surfcoat.2019.04.020

DO - 10.1016/j.surfcoat.2019.04.020

M3 - RGC 21 - Publication in refereed journal

SN - 0257-8972

VL - 367

SP - 302

EP - 310

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

Ablation behaviors of Ir–Al intermetallic coatings in a plasma wind tunnel

Abstract

Research Keywords

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