共搜索到47条信息,每页显示10条信息,共5页。用时:0小时0分0秒421毫秒
(490 ℃, 16 h)+(520 ℃, 16 h). 关键词:耐热铝合金,均匀化热处理,共晶相 中图分类号:TG146.21 文献标志码:A Homogenization treatment and microstructure of semicontinous casting ingot of 2D70 heat-resistance... Institute for Nonferrous Metals,Beijing 100088, China; 2. Northeast Light Alloy Co., Ltd., Harbin 150060, China) Abstract:The constituents of the semicontinuous casting ingot of 2D70 heat-resistance......
; Abstract: To improve the strength, toughness and heat-resistance of magnesium alloy, the microstructure and mechanical... to the pinning effect of I-phase on grain boundaries. Key words: magnesium alloy; spherical quasicrystal particles; ZA54 alloy; composite strengthening; heat-resistance  ......
was studied by transmission electron microscope. The results show that the extruded-T5 alloy has higher hardness and better heat resistance than the as-extruded alloy during high temperature ageing... phase transforming to β phase is the shortest and three phases of β′, β1 and β can co-exist in the aged microstructure. The hardness and heat resistance drop sharply once the β′ phase transforms to β1......
University of Chemical Technology, Beijing 100029, China) Abstract: The effects of oxidation time, sulfuric acid concentration and current density on heat-resistance of anodic film formed on ZL201... of oxidation current density, the density of cracks in anodic films after heating decreases. Key words: anodic oxide film; heat-resistance; crack; internal stress  ......
J. Cent. South Univ. Technol. (2011) 18: 2185-2191 DOI: 10.1007/s11771-011-0961-6 Heat resistance and water protection effectiveness for large single-pane fireproof glass SHAO Quan(邵荃)1, LI Fang(李芳)1... system; heat-resistance; fireproof glass; fire test 1 Introduction The demands for glazing assemblies are increasing in modern buildings for aesthetic elegance and economic reasons. However, thermal......
properties than SiO2/Fe3O4. Such nano-composites are very promising in application as magnetic catalyst carriers and sorbent carriers. Key words: γ-Fe2O3; magnetic catalyst carrier; heat-resistance...; γ-Fe2O3-SiO2复合物的热重-差热曲线 Fig.1 TG-DTA curves of precursor of γ-Fe2O3-SiO2 sample 图2 经不同温度煅烧后γ-Fe2O3-SiO2复合物的X射线衍射谱 Fig.2 XRD patterns of γ-Fe2O3-SiO2 samples heat treated......
; heat-resistance; creep property 近年来,镁及镁合金以其资源和性能优势,在航天航空,交通工具等领域显现出巨大的应用潜力...上添加2%Nd,不仅细化合金枝晶间距,还显著地提高第二相的分布密度,增强合金蠕变过程中位错与第二相交互作用,提高合金的蠕变性能. 关键词:镁合金;耐热镁合金;碱土;稀土;耐热性;蠕变性能 中图分类号:TG 146 文献标志码:A Microstructures and creep properties of heat-resistant......
Technology摘 要:Compared with the first and second generations SiC fibers, the third generation SiC fibers have obvious improvement in heat-resistance, oxidation-resistance and creep-resistance, which promote the development of SiCf/SiC composite materials. Therefore, the third generation SiC fibers have more advantages and broader prospects in engineering......
achieved with a composition of Mg-8.23 wt.% Sn-2 wt.% Nd. The compressive creep resistance of Mg-8.23 wt.%Sn-2 wt.% Nd alloy was much better than other alloys at 200 oC for applied load of 35 MPa, which was mainly due to the formation of dispersive heat-resistance Mg2Sn and Mg-Sn- Nd intermetallic compounds.关键词:......
, they have better toughness. Filled with muscovite, the heat-resistance and heat-decompostion of the composites are improved.关键词:......