已入深夜,您辛苦了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!祝你早点完成任务,早点休息,好梦!

Medium-entropy (Me,Ti)0.1(Zr,Hf,Ce)0.9O2 (Me = Y and Ta): Promising thermal barrier materials for high-temperature thermal radiation shielding and CMAS blocking

材料科学 热障涂层 腐蚀 热导率 电磁屏蔽 氧化钇稳定氧化锆 氧化物 热阻 抗辐射性 立方氧化锆 复合材料
作者
Shuaihang Qiu,Huimin Xiang,Fu-Zhi Dai,Hailong Wang,Muzhang Huang,Chunlei Wan,Qing Meng,Jiangtao Li,Xiaohui Wang,Yanchun Zhou
出处
期刊:Journal of Materials Science & Technology [Elsevier BV]
卷期号:123: 144-153
标识
DOI:10.1016/j.jmst.2022.01.019
摘要

• Two medium-entropy (ME) oxide ceramics, ME (Y,Ti) 0.1 (Zr,Hf,Ce) 0.9 O 2 and ME (Ta,Ti) 0.1 (Zr,Hf,Ce) 0.9 O 2 , were designed and prepared successfully. • Good high-temperature thermal radiation shielding performance and CMAS resistance of the two ME oxides were demonstrated for the first time. • The relationship between high-temperature thermal radiation shielding performance, i.e., infrared absorbance at the waveband of 1 to 5 μm and band gap in ME (Me,Ti) 0.1 (Zr,Hf,Ce) 0.9 O 2 (Me= Y and Ta) was investigated systematically. • The mechanism for the CMAS corrosion resistance was proposed for ME (Me,Ti) 0.1 (Zr,Hf,Ce) 0.9 O 2 (Me= Y and Ta). With continuous enhancement of gas-turbine inlet temperature and rapid increase of radiant heat transfer, thermal barrier coating (TBC) materials with a combination of low thermal conductivity and good high-temperature thermal radiation shielding performance play vital roles in ensuring the durability of metallic blades. However, yttria-stabilized zirconia (YSZ), as the state-of-the-art TBC and current industry standard, is unable to meet such demands since it is almost translucent to high-temperature thermal radiation. Besides, poor corrosion resistance of YSZ to molten calcia-magnesia-alumina-silicates (CMAS) also impedes its application in sand, dust, or volcanic ash laden environments. In order to improve the high-temperature thermal radiation shielding performance and CMAS resistance of YSZ and further reduce its thermal conductivity, two medium-entropy (ME) oxide ceramics, ME (Y, Ti) 0.1 (Zr, Hf, Ce) 0.9 O 2 and ME (Ta, Ti) 0.1 (Zr, Hf, Ce) 0.9 O 2 , were designed and prepared by pressureless sintering of binary powder compacts in this work. ME (Y, Ti) 0.1 (Zr, Hf, Ce) 0.9 O 2 presents cubic structure but a trace amount of secondary phase, while ME (Ta, Ti) 0.1 (Zr, Hf, Ce) 0.9 O 2 displays a combination of tetragonal phase (81.6 wt.%) and cubic phase (18.4 wt.%). Both ME (Y, Ti) 0.1 (Zr, Hf, Ce) 0.9 O 2 and ME (Ta, Ti) 0.1 (Zr, Hf, Ce) 0.9 O 2 possess better high-temperature thermal radiation shielding performance than YSZ. Especially, the high-temperature thermal radiation shielding performance of ME (Ta, Ti) 0.1 (Zr, Hf, Ce) 0.9 O 2 is superior to that of ME (Y, Ti) 0.1 (Zr, Hf, Ce) 0.9 O 2 due to its narrower band gap and correspondingly higher infrared absorbance (above 0.7) at the waveband of 1 to 5 μm. The two ME oxides also display significantly lower thermal conductivity than YSZ and close thermal expansion coefficients (TECs) to YSZ and Ni-based superalloys. In addition, the two ME oxides possess excellent CMAS resistance. After attack by molten CMAS at 1250 °C for 4 h, merely ∼2 μm thick penetration layer has been formed and the structure below the penetration layer is still intact. These results demonstrate that ME ( Me , Ti) 0.1 (Zr, Hf, Ce) 0.9 O 2 ( Me = Y and Ta), especially ME (Ta, Ti) 0.1 (Zr, Hf, Ce) 0.9 O 2 , are promising thermal barrier materials for high-temperature thermal radiation shielding and CMAS blocking.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
fanyueyue完成签到 ,获得积分10
1秒前
4114完成签到,获得积分10
4秒前
ding应助lizigongzhu采纳,获得10
4秒前
5秒前
伊叶之丘完成签到 ,获得积分10
6秒前
SYLH应助WeiMooo采纳,获得10
8秒前
10秒前
11秒前
12秒前
Nefelibata完成签到,获得积分10
12秒前
15秒前
20秒前
Limerencia完成签到,获得积分10
23秒前
李爱国应助zhouleiwang采纳,获得10
28秒前
XL神放完成签到 ,获得积分10
29秒前
稳重向南完成签到,获得积分10
31秒前
范户晓完成签到,获得积分10
36秒前
38秒前
kkkk完成签到,获得积分10
39秒前
冷艳玉米完成签到,获得积分10
40秒前
kkkk发布了新的文献求助10
41秒前
爱卿5271完成签到,获得积分10
43秒前
一直向前发布了新的文献求助10
43秒前
岳小龙完成签到 ,获得积分10
48秒前
48秒前
冰川与星辰完成签到,获得积分10
48秒前
50秒前
开朗万天完成签到 ,获得积分10
51秒前
科研助手6应助冰雪痕采纳,获得10
52秒前
ShenQ发布了新的文献求助10
54秒前
奶糖爱果冻完成签到 ,获得积分10
55秒前
甜甜的紫菜完成签到 ,获得积分10
56秒前
li完成签到 ,获得积分10
1分钟前
shu完成签到,获得积分10
1分钟前
Cathy完成签到,获得积分10
1分钟前
JiayinLiu发布了新的文献求助50
1分钟前
天天快乐应助认真的三问采纳,获得10
1分钟前
狐狸小姐完成签到 ,获得积分10
1分钟前
fane完成签到,获得积分10
1分钟前
TY完成签到 ,获得积分10
1分钟前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
Aktuelle Entwicklungen in der linguistischen Forschung 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989972
求助须知:如何正确求助?哪些是违规求助? 3532034
关于积分的说明 11256042
捐赠科研通 3270884
什么是DOI,文献DOI怎么找? 1805093
邀请新用户注册赠送积分活动 882256
科研通“疑难数据库(出版商)”最低求助积分说明 809216