Effect of HfB2 and WC additives on the ablation resistance of ZrB2-SiC composite coating manufactured by SPS

被引：29
|
作者：
Shalmani, S. Ali Akbarpour [1 ]
Sobhani, M. [1 ]
Mirzaee, O. [1 ]
Zakeri, M. [2 ]
机构：
[1] Semnan Univ, Fac Mat & Met Engn, Semnan, Iran
[2] Mat & Energy Res Ctr, Ceram Dept, Karaj, Iran
来源：
CERAMICS INTERNATIONAL | 2020年 / 46卷 / 16期
关键词：
Ablation; Composite; SPS; ZrB2; HfB2; WC; CERAMIC COATINGS; CARBON/CARBON COMPOSITES; ANTIOXIDATION PROPERTY; OXIDATION PROTECTION; TEMPERATURE; GRAPHITE; MICROSTRUCTURE;
D O I：
10.1016/j.ceramint.2020.06.297
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
ZrB2-SiC composite coating with HfB2-WC as additives was successfully manufactured on graphite substrate by spark plasma sintering method. The effect of HfB2 and WC on coating properties was investigated. The microstructure, phase changes and ablation resistance of the coatings were studied. Results showed that composite coatings with the thickness of 500 mu m and penetration depth of 250 mu m were obtained for all samples. Results of the oxyacetylene flame test showed that the ablation resistance of the coated graphite was significantly increased. The minimum ablation weight percentage and rate of 2% and 3 mg s(-1) were obtained for the composite coating with 3.75% of each additive.
引用
收藏
页码：25106 / 25112
页数：7
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