Nanlin SHI
,
Jiwei FENG
,
Yanfen GUO
,
Yuyin LIU
,
Z.X.Guo
材料科学技术(英文)
Prenitridation of the TiBx coating surface of the Sigma SM1240 SiC fiber can form more stable compounds at the surface and obstruct the release of boron atoms into the Ti-based alloy matrix. The effect of nitridation on the tensile strength of the fiber was investigated in this work. Nitridation cou...
关键词:
SiC fiber
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null
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null
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null
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null
Lu Zhang
材料科学技术(英文)
A method of preparing continuous (Al+Al2O3)-coated SiC fiber reinforced nickel matrix composite was presented, in which the diffusion between SiC fiber and nickel matrix could be prevented. Magnetron sputtering is used to deposit Ni coating on the surface of the (Al+Al2
关键词:
SiC fiber
Yuechun FU
材料科学技术(英文)
In SiC(f)/Ti-6Al-4V composites, the microstructure of the matrix close to the fiber was different from that of the fiber-less material. Microstructure observations show that a layer of fine grains was located adjacent to the fiber, and more dislocations and faults were found in this region. Higher r...
关键词:
Matrix strengthening
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null
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null
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Baohong JIN
材料科学技术(英文)
The SiC fiber was prepared by chemical vapour depostion, which consists of tungsten core, SiC layer and carbon coating. The microstructure of the fiber was investigated using Raman spectroscopy, illustrating SiC variation in different region of the fiber. The result shows that the SiC layer can be s...
关键词:
Raman spectra
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null
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null
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null
罗贤
,
杨延清
,
黄斌
,
李建康
,
刘翠霞
,
陈彦
稀有金属材料与工程
研究了SiC_f/Cu基复合材料分别在有无Ti6Al4V界面改性涂层两种情况下的纵向热膨胀行为,并采用扫描电镜对热循环后的试样进行显微形貌观察.结果表明,界面结合强度对纤维增强金属基复合材料的纵向热膨胀行为有很大影响.对于没有Ti6Al4V涂层的复合材料,其热膨胀行为不稳定,在经历连续两次热循环后,...
关键词:
金属基复合材料
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SiC纤维
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热膨胀系数
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中间层
,
界面结合强度
曲海涛
,
任学平
,
侯红亮
,
赵冰
稀有金属材料与工程
利用磁控溅射,采用钛靶和铝靶按照一定功率比在SiC纤维表面沉积钛与铝,制备SiC纤维的Ti-Al基复合先驱丝,按密排堆垛置于包套之中并经热等静压制备碳化硅纤维增强钛铝基试样.通过扫描电镜观察组织形貌,研究热等静压及真空热处理对组织结构、界面反应层的影响,应用XRD与能谱分析,研究磁控溅射功率对原子比...
关键词:
碳化硅纤维
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钛铝
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原位合成
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动力学
,
磁控溅射
杨延清
,
罗贤
,
黄斌
,
李建康
,
陈彦
材料热处理学报
采用三点弯曲法测定了SiC纤维单向增强的Ti-6Al-4V复合材料的表观断裂韧性,讨论了界面反应对断裂韧性的影响.研究结果表明,在裂纹尖端塑性变形区的未断纤维的桥联对复合材料的断裂韧性起很大的作用.经过热处理后,SiCf/Ti-6Al-4V复合材料的断裂韧性降低,主要是由于严重的界面反应,使得SiC...
关键词:
复合材料
,
SiC纤维
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Ti-6Al-4V
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断裂韧性
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界面反应