Wu Zhihong
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- Associate Professor
- Supervisor of Master's Candidates
- Name (Pinyin):Wu Zhihong
- School/Department:材料科学与工程学院
- Education Level:PhD student
- Business Address:工科大楼
- Contact Information:zhihong@xauat.edu.cn
- Degree:Doctoral degree
- Professional Title:Associate Professor
- Status:Employed
- Discipline:Materialogy
Other Contact Information
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- Paper Publications
不同气氛制备的MoSi 2 /Al 2 O 3 复合材料显微结构与介电性能
Release time:2024-08-09 Hits:
- Affiliation of Author(s):材料科学与工程学院
- Journal:硅酸盐学报
- Key Words:二硅化钼/氧化铝;复合材料;烧成气氛;显微结构;介电性能;
- Abstract:采用固相烧结法制备MoSi 2 /Al 2 O 3 复合材料,研究了空气、真空、Ar气氛对显微结构及介电性能的影响。结果表明:Ar气氛下试样烧结性能好于真空及空气气氛,MoSi 2 颗粒被Al 2 O 3 包覆且分散均匀;3种气氛下烧成的试样均含MoSi 2 、Al 2 O 3 和Mo 5 Si 3 相,而空气下发现有SiO 2 ,真空及Ar保护气氛有少量Mo;空气气氛下烧成的复合材料气孔率最大,断裂韧性与抗弯强度最低;Ar保护气氛烧成后试样的断裂韧性与抗弯强度分别达到9.70 MPa·m 1/2 与179.5 MPa。随频率的增加,不同烧结气氛制备的MoSi 2 /Al 2 O 3 复合材料的介电常数和介电损耗均降低;随着烧结气氛从空气、真空、Ar气的变化,复合材料介电常数的实部和虚部均增加。
- First Author:薛群虎,dingdonghai,Wu Zhihong
- Indexed by:Journal paper
- Correspondence Author:张聪,李妤婕
- Discipline:Engineering
- Volume:中文核心期刊:765-770,6
- ISSN No.:0454-5648
- Translation or Not:no
- Date of Publication:2017-05-02