Deposition and oxidation behavior of Mo(Si,Al)2/MoB layered coatings on TZM alloy

Ping Zhang; Xiping Guo; Chunying Zhang; Qing Tao; Chengjin Shen

doi:10.1016/j.ijrmhm.2017.04.008

Deposition and oxidation behavior of Mo(Si,Al)₂/MoB layered coatings on TZM alloy

Ping Zhang
, Xiping Guo
, Chunying Zhang
, Qing Tao
, Chengjin Shen

School of Materials Sience and Engineering

China University of Mining and Technology

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

A two-step pack cementation process including first boronizing and then co-depositing of Si-Al-Y with different Al contents (0, 5 and 10 wt%) in the packs was used to deposit oxidation-resistant coatings on TZM alloy. The as-formed coatings are MoSi₂/MoB, Mo(Si,Al)₂/MoB, and Mo(Si,Al)₂/Mo-Al-B/MoB layered coatings respectively. Compared with the MoSi₂/MoB coating, the improved oxidation-resistant performance is presented in the Mo(Si,Al)₂/MoB and Mo(Si,Al)₂/Mo-Al-B/MoB coatings upon oxidation at 1250 °C, which should be attributed to the sluggish inward diffusion of Si into substrate and forming dense scales composed of SiO₂ and Al₂O₃. The microstructure change and oxidation behavior of these coatings are investigated.

Original language	English
Pages (from-to)	32-39
Number of pages	8
Journal	International Journal of Refractory Metals and Hard Materials
Volume	67
DOIs	https://doi.org/10.1016/j.ijrmhm.2017.04.008
State	Published - 1 Sep 2017

Keywords

Mo based alloy
Mo(Si,Al)/MoB layered coatings
Oxidation
Two-step pack cementation

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10.1016/j.ijrmhm.2017.04.008

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@article{d839e38c0459413580ca7ffe61e31024,

title = "Deposition and oxidation behavior of Mo(Si,Al)2/MoB layered coatings on TZM alloy",

abstract = "A two-step pack cementation process including first boronizing and then co-depositing of Si-Al-Y with different Al contents (0, 5 and 10 wt\%) in the packs was used to deposit oxidation-resistant coatings on TZM alloy. The as-formed coatings are MoSi2/MoB, Mo(Si,Al)2/MoB, and Mo(Si,Al)2/Mo-Al-B/MoB layered coatings respectively. Compared with the MoSi2/MoB coating, the improved oxidation-resistant performance is presented in the Mo(Si,Al)2/MoB and Mo(Si,Al)2/Mo-Al-B/MoB coatings upon oxidation at 1250 °C, which should be attributed to the sluggish inward diffusion of Si into substrate and forming dense scales composed of SiO2 and Al2O3. The microstructure change and oxidation behavior of these coatings are investigated.",

keywords = "Mo based alloy, Mo(Si,Al)/MoB layered coatings, Oxidation, Two-step pack cementation",

author = "Ping Zhang and Xiping Guo and Chunying Zhang and Qing Tao and Chengjin Shen",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = sep,

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doi = "10.1016/j.ijrmhm.2017.04.008",

language = "英语",

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TY - JOUR

T1 - Deposition and oxidation behavior of Mo(Si,Al)2/MoB layered coatings on TZM alloy

AU - Zhang, Ping

AU - Guo, Xiping

AU - Zhang, Chunying

AU - Tao, Qing

AU - Shen, Chengjin

PY - 2017/9/1

Y1 - 2017/9/1

N2 - A two-step pack cementation process including first boronizing and then co-depositing of Si-Al-Y with different Al contents (0, 5 and 10 wt%) in the packs was used to deposit oxidation-resistant coatings on TZM alloy. The as-formed coatings are MoSi2/MoB, Mo(Si,Al)2/MoB, and Mo(Si,Al)2/Mo-Al-B/MoB layered coatings respectively. Compared with the MoSi2/MoB coating, the improved oxidation-resistant performance is presented in the Mo(Si,Al)2/MoB and Mo(Si,Al)2/Mo-Al-B/MoB coatings upon oxidation at 1250 °C, which should be attributed to the sluggish inward diffusion of Si into substrate and forming dense scales composed of SiO2 and Al2O3. The microstructure change and oxidation behavior of these coatings are investigated.

AB - A two-step pack cementation process including first boronizing and then co-depositing of Si-Al-Y with different Al contents (0, 5 and 10 wt%) in the packs was used to deposit oxidation-resistant coatings on TZM alloy. The as-formed coatings are MoSi2/MoB, Mo(Si,Al)2/MoB, and Mo(Si,Al)2/Mo-Al-B/MoB layered coatings respectively. Compared with the MoSi2/MoB coating, the improved oxidation-resistant performance is presented in the Mo(Si,Al)2/MoB and Mo(Si,Al)2/Mo-Al-B/MoB coatings upon oxidation at 1250 °C, which should be attributed to the sluggish inward diffusion of Si into substrate and forming dense scales composed of SiO2 and Al2O3. The microstructure change and oxidation behavior of these coatings are investigated.

KW - Mo based alloy

KW - Mo(Si,Al)/MoB layered coatings

KW - Oxidation

KW - Two-step pack cementation

UR - https://www.scopus.com/pages/publications/85019066205

U2 - 10.1016/j.ijrmhm.2017.04.008

DO - 10.1016/j.ijrmhm.2017.04.008

M3 - 文章

AN - SCOPUS:85019066205

SN - 0263-4368

VL - 67

SP - 32

EP - 39

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

ER -

Deposition and oxidation behavior of Mo(Si,Al)₂/MoB layered coatings on TZM alloy

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Keywords

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