Effect of boronizing on the cyclic oxidation of stainless steel

被引：32

作者：

Dokumaci, E. ^{[1
]}

Ozkan, I. ^{[2
]}

Onay, B. ^{[1
]}

机构：

[1] Dokuz Eylul Univ, Fac Engn, Met & Mat Engn Dept, Izmir, Turkey

[2] Dokuz Eylul Univ, Torbali Vocat Sch, Izmir, Turkey

来源：

SURFACE & COATINGS TECHNOLOGY | 2013年 / 232卷

关键词：

Boronizing; Cyclic oxidation; High temperature; Stainless steel; RESISTANCE; BEHAVIOR; ALLOYS;

D O I：

10.1016/j.surfcoat.2013.04.047

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, the effect of boronizing surface treatment on the cyclic oxidation behavior of 304-type stainless steel was investigated. Boronizing treatment was carried out at 950 degrees C for 4 and 8 h. XRD analyses indicated FeB, Fe2B, and CrB phases as the boronizing products formed in the steel. During the cyclic oxidation tests conducted at 800 degrees C in air, boronized samples gained less weight than as-received samples and had oxide scales that grew according to the parabolic law. Such kinetic behavior is thought to be related to the presence, besides metal oxides, of an iron borate (FeBO3) and a liquid (B2O3) phase in the scale. Based on the analyses results and the observation that alloy samples that were boronized the longest had the lowest weight gains during oxidation, it is proposed that the boronizing surface treatment can be more effective under cyclic oxidation conditions because the complete conversion of borides to oxides may take longer as a result of thermal cycling. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：22 / 25

页数：4

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