Investigation of mechanical properties and oxidation resistance of CVD TiB2 ceramic coating on molybdenum

被引：28
作者：
Huang, Xiaoxiao [1 ]
Sun, Shuchen [1 ]
Tu, Ganfeng [1 ]
机构：
[1] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2020年 / 9卷 / 01期
关键词：
Titanium diboride; Coating; Chemical vapor deposition; Oxidation; SI-B ALLOYS; ADHESION STRENGTH; TEMPERATURE; SUBSTRATE; MICROSTRUCTURE; BEHAVIOR; PROTECTION;
D O I：
10.1016/j.jmrt.2019.10.056
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
TiB2 anti-oxidation ceramic coatings were successfully synthesised on a Mo substrate by using chemical vapor deposition (CVD). A scratch test was performed to measure the adhesion strength of the TiB2 ceramic coatings to the Mo substrate. The results indicated good adhesion between the two materials; the adhesion strength was 125 mN. Furthermore, high-temperature oxidation tests indicated that the CVD TiB2 ceramic coating protected the Mo substrate against oxidation up to 900 degrees. Isothermal oxidation experiments revealed that the Mo substrate covered with a 13-mu m-thick TiB2 ceramic coating was protected against oxidation for a duration of 5 h. The oxidation kinetics followed a parabolic law for the first 2.5 h and a linear law in the next 2.5 h. (C) 2019 The Authors. Published by Elsevier B.V.
引用
收藏
页码：282 / 290
页数：9
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