| TiC-TiB2 复相陶瓷涂层的反应火焰喷涂制备 |
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| 引用本文： | 王建江,杜心康,刘宏伟,陆大勤,薛锦,潘希德. TiC-TiB2 复相陶瓷涂层的反应火焰喷涂制备[J]. 复合材料学报, 2006, 23(4): 100-105 |
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| 作者姓名： | 王建江 杜心康 刘宏伟 陆大勤 薛锦 潘希德 |
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| 作者单位： | 1.西安交通大学材料科学与工程学院, 西安 710049 ; |
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| 基金项目： | 国家自然科学基金（50272084） |
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| 摘 要： | 基于SHS 反应火焰喷涂技术, 采用Ti-B4C-C 喷涂体系, 在钢基表面制备了TiC- TiB2 复相陶瓷涂层。通过对SHS 火焰喷涂陶瓷涂层的电子显微观察和X射线衍射及能谱分析, 探讨了SHS 反应火焰喷涂TiC- TiB2复相陶瓷涂层的组织结构及成因。研究发现, 涂层是一种复相非均质、传统热喷涂层状涂层特征不明显的亚稳结构。涂层由占主体的TiC0.7N0.3 、TiC0.2N0.8 、TiB2 相和少量TiO2 、Ti2O、Ti3O5 相及气孔组成。涂层中有三类特征各异的组织, 即尺度在微2纳米级呈团簇状分布的组织, 尺寸在1～3μm 之间呈等轴状颗粒分布的组织和呈深黑色的不规则气孔。三类组织是由在喷涂粒子与基材接触之前, 喷涂团聚粉粒经飞行燃烧和反应合成形成的熔融陶瓷液滴(又分为实心和空心两类) 和不规则陶瓷颗粒(其形状与原喷涂团聚颗粒一样, 但组织结构已发生转变,基本成为陶瓷相) 与基材碰撞变形、冷却凝固、快速结晶形成的。
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| 关 键 词： | SHS 火焰喷涂 TiC- TiB2 陶瓷涂层 组织结构 |
| 文章编号： | 1000-3851（2006）04-0100-06 |
| 收稿时间： | 2005-07-08 |
| 修稿时间： | 2005-07-082006-01-13 |
TiC-TiB2 multiphase ceramic coatings prepared by reactive flame spray |
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| WANG Jianjiang,DU Xinkang,LIU Hongwei,LU Daqin,XUE Jin,PAN Xide. TiC-TiB2 multiphase ceramic coatings prepared by reactive flame spray[J]. Acta Materiae Compositae Sinica, 2006, 23(4): 100-105 |
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| Authors: | WANG Jianjiang DU Xinkang LIU Hongwei LU Daqin XUE Jin PAN Xide |
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| Affiliation: | 1.College of Materials Science and Engineering| Xipan J iaotong University| Xipan 710049|China ;2.Institute of Advanced Materials| Ordnance Engineering College| Shijiazhuang 050003| China |
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| Abstract: | Based on the reactive fame spray technique , TiC- TiB2 multiphase coatings were prepared on the steelsubst rate with Ti-B4C-C reactant s. By elect ronic microcosmic observation , X-ray diff raction and energy spect rumanalysis , the st ructure and it s forming causes of TiC- TiB2 multiphase coatings were discussed. The result s showthat the coatings have the multiphase heterogeneous metastable st ructure , which have no conspicuous layer-shapedst ructure that the t raditional flame spray coatings have. The coatings are composed of the major phases TiC0.7N0.3 ,TiC0.2N0.8 , TiB2 , a little of TiO2 , Ti2O , Ti3O5 and some pores. There are three kinds of st ructures with differentcharacteristics in the coatings the cluster-shaped st ructure in micron-nanometer size , the 1～3μm st ructure takingon equiaxed particles dist ribution , and the deep black pores. Before meeting the subst rate the spray particles combust , react , and form molten ceramic beads (in solid and hollow two kinds) or abnormal ceramic granules (having thesame figure as the spray particles) . Af ter colliding with the subst rate , they distort , cool , quickly crystallize andform the three kinds of st ructures. |
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| Keywords: | SHS flame spray TiC-TiBz ceramic coatings structure |
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