Ion sputtering erosion mechanisms of h-BN composite ceramics with textured microstructures

被引：0

作者：

Duan, Xiaoming ^{[1
]}

Ding, Yongjie ^{[2
]}

Jia, Dechang ^{[1
]}

Jing, Nan ^{[1
]}

Yang, Zhihua ^{[1
]}

He, Peigang ^{[1
]}

Tian, Zhuo ^{[1
]}

Wang, Shengjin ^{[1
]}

Wang, Yujin ^{[1
]}

Zhou, Yu ^{[1
]}

Yu, Daren ^{[2
]}

机构：

[1] Duan, Xiaoming

[2] Ding, Yongjie

[3] Jia, Dechang

[4] Jing, Nan

[5] Yang, Zhihua

[6] He, Peigang

[7] Tian, Zhuo

[8] Wang, Shengjin

[9] Wang, Yujin

[10] Zhou, Yu

[11] Yu, Daren

来源：

Duan, X. (dxm_hit@126.com) | 1600年 / Elsevier Ltd卷 / 613期

基金：

中国国家自然科学基金;

关键词：

Since the hexagonal boron nitride (h-BN) grain shows typical lamellar structures; textured materials can be obtained by arranging h-BN grains along one direction. In this work; textured h-BN composite ceramics with the c-axis orientation arranged along the pressure direction are manufactured by hot-press sintering using mullite as the sintering additive. The results show that sintering pressures not only play a major role in the density and the textured degrees of composite ceramics; but also influence Xe ion erosion resistance performances. After Xe ion sputtering; compositions of both h-BN and mullite stay stable; while the elemental compositions have changed due to the so-called preferential sputtering. Sputtered surfaces along different orientations show diverse morphologies attributed to the textured microstructures. The erosion mechanisms of h-BN grains during Xe ion sputtering are breaking of B-N bonds and delamination of BN layers. While the mass loss of composite ceramics is due to the erosion of h-BN grains and mullite coupled with partial detachment of h-BN grains from the surface. © 2014 Elsevier Inc. All rights reserved;

D O I：

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中图分类号：

学科分类号：

摘要：

Journal article (JA)

引用

页码：1 / 7

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