TY - JOUR
T1 - Ablative property of laminated ZrB2-SiC ceramics under oxyacetylene torch
AU - Zuo, Fengjuan
AU - Cheng, Laifei
AU - Xiang, Liuyi
AU - Zhang, Litong
AU - Li, Liangjun
PY - 2013/5
Y1 - 2013/5
N2 - Two kinds of laminated ZrB2-SiC ceramics were successfully fabricated by aqueous tape casting, laminating and hot-pressing. The first one was alternately composed of ZrB2+36 vol% SiC layers and ZrB 2+20 vol% SiC layers with sintering aid of 5 vol% B4C. The second one was achieved by inserting an aquadag interlayer between two different ZrB2-SiC layers. The ablation experiments were carried out on an oxyacetylene torch flame with a temperature of about 3000 °C. Both ceramics exhibited zero ablation in the macroscopic level after ablation for 20 s, showing outstanding ablation resistance. However, ablation oxidation layer of the second ceramic was thinner than that of the first one microscopically, which was mainly attributed to full densification of the surface ablation layer. The aquadag layer promoted sintering of laminated ZrB2-SiC ceramics at elevated temperatures.
AB - Two kinds of laminated ZrB2-SiC ceramics were successfully fabricated by aqueous tape casting, laminating and hot-pressing. The first one was alternately composed of ZrB2+36 vol% SiC layers and ZrB 2+20 vol% SiC layers with sintering aid of 5 vol% B4C. The second one was achieved by inserting an aquadag interlayer between two different ZrB2-SiC layers. The ablation experiments were carried out on an oxyacetylene torch flame with a temperature of about 3000 °C. Both ceramics exhibited zero ablation in the macroscopic level after ablation for 20 s, showing outstanding ablation resistance. However, ablation oxidation layer of the second ceramic was thinner than that of the first one microscopically, which was mainly attributed to full densification of the surface ablation layer. The aquadag layer promoted sintering of laminated ZrB2-SiC ceramics at elevated temperatures.
KW - Ablation resistance
KW - Laminated ZrB-SiC ceramics
KW - Oxyacetylene torch flame
UR - http://www.scopus.com/inward/record.url?scp=84874656569&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2012.10.179
DO - 10.1016/j.ceramint.2012.10.179
M3 - 文章
AN - SCOPUS:84874656569
SN - 0272-8842
VL - 39
SP - 4627
EP - 4631
JO - Ceramics International
JF - Ceramics International
IS - 4
ER -