Deposition and oxidation behavior of Mo(Si,A1)2/MoB layered coatings on TZM alloy

被引：24
|
作者：
Zhang, Ping [1 ]
Guo, Xiping [2 ]
Zhang, Chunying [1 ]
Tao, Qing [1 ]
Shen, Chengjin [1 ]
机构：
[1] China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221116, Jiangsu, Peoples R China
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
来源：
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2017年 / 67卷
基金：
中国国家自然科学基金;
关键词：
Mo based alloy; Mo(Si; AI)(2)/MoB layered coatings; Two-step pack cementation; Oxidation; PACK CEMENTATION; RESISTANT COATINGS; SI; COMPOSITE; AL; MICROSTRUCTURE; CODEPOSITION; MOSI2; CR;
D O I：
10.1016/j.ijrmhm.2017.04.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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,A1)(2)/Mo-Al-B/MoB coatings upon oxidation at 1250 degrees 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.
引用
收藏
页码：32 / 39
页数：8
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