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(Group) Co., Ltd., Chongqing 400054, China Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract: Due to the current trend towards lightweight design... usually have cylindrical cross section with variable diameters, which are made of mild steel, alloy steel and copper alloys, and their microstructures and properties are affected by hot RFP [4]. To obtain......
activity of Pt catalysts for methanol oxidation. Another peak emerging in the reverse scan reflects the elimination of the residual carbonaceous species (e.g., CO) that are left in the forward scan. Thus the ratio of the forward peak current to the backward peak current (If/Ib) can be used to estimate the tolerance of Pt catalysts against CO poisoning [30, 31]. The If value of EEG-Pt-eg is ~292.4......
] TANG Long-qing, JIANG Fu-lin, TENG Jie, FU Ding-fa, ZHANG Hui. Strain path dependent evolutions of microstructure and texture in AZ80 magnesium alloy during hot deformation [J]. Journal of Alloys......
材料之一[2-3].但钛合金耐烧蚀,耐磨损性能不佳的特点,限制了其在上述领域的应用[3-4]. 电镀Cr涂层体系已应用于钢基枪炮身管及其它高温压力容器表面,起到防烧蚀,冲刷作用[5].但电镀Cr层在制备和使用中易产生裂纹,且制备过程产生的六价Cr为高污染性物质[6].物理气相沉积(PVD)Ta,W,Ta-W等高温涂层被认为是电镀Cr层的理想替代物[4, 7-10].钢制炮管内表面制备纯Ta层,经实...能和失效机理[12].SHIN等[13]和DENG等[14]认为脉冲激光加热能较好地模拟涂层循环热加载实际工况.COTE等[15]研究表明,Cr涂层/炮钢材料体系经脉冲激光加热后,可观察到大部分与实际火药气体烧蚀后产生的热破坏特征,能较好地模拟实际工况. 前期研究表明,Ta-W涂层/钛合金体系具备良好的抗热震性能[4],界面及元素稳定性能[1],但尚未关于Ta基涂层(Ta-W涂层)/钛合金体系应用......
QU2, Qi-hong FANG3 1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 2. Hunan Boyun Automobile Brake Materials Co., Ltd., Changsha 410205, China; 3. State... provided by Changsha Hualiu Metallurgical Powder Co., Ltd., by adding 0, 2, 4, 6 and 8 wt.% zinc powder (99.9% purity), simultaneously, reducing the barium sulfate (98.5% purity) content, see......
in various industrial fields in the form of alloys or compounds [1]. The most important compound of antimony is Sb2O3, which is mainly used as a flame retardant agent [2]. Most Sb2O3 products are produced... by oxidation-leaching of Sb2O3 (AR, Sinopharm Chemical Reagent Co., Ltd.) in sulfuric acid (AR, Sinopharm Chemical Reagent Co., Ltd.) with an oxidant of ozone-containing gas, which was generated by an ozone......
H. TEM characterization of a TiN-MgAl2O4 epitaxial interface [J]. Journal of Alloys and Compounds, 2017, 695: 476-481. DOI: 10.1016/j.jallcom. 2016.11.103. [18] KIM J Y, OH N R, OH Y H, CHO Y T, LEE W... W, KURZ W. Solute redistribution during solidification with rapid solid state diffusion [J]. Metallurgical Transactions A, 1981, 12(6): 965-971. DOI: 10.1007/BF02643477. [23] CLYNE T W, WOLF M, KURZ......
≤5×10-4 wt%; Cu, Sn, Ni, Cr, V<2×10-4 wt%; Co, Mo, Al<5×10-4 wt%; Si<10×10-4 wt%. A gamma-spectrometric analysis revealed that both tantalum hydroxide and tantalum pentoxide obtained from... wt%; Fe≤3×10-4 wt%; Mn<1×10-4 wt%; Mg≤ 3×10-4 wt%; Pb≤5×10-4 wt%; Cu, Sn, Ni, Cr, V<2×10-4 wt%; Co, Mo, Al<5×10-4 wt%; Si< 10×10-4 wt%. A gamma-spectrometric analysis demonstrates......
: 10.1016/ j.ijmachtools.2014.11.002. [2] UMBRELLO D, PU Z, CARUSO S, OUTEIRO J C, JAYAL A D, DILLON O W. The effects of cryogenic cooling on surface integrity in hard machining [J]. Procedia Eng, 2011... in dry and cryogenic coolant at high cutting speed [J]. Wear, 2017, 376-377: 125-133. DOI: 10.1016/j.wear.2017.01.031. [10] PARK K H, SUHAIMI M A, YANG G D, LEE D Y, LEE S W, KWON P. Milling......
100083, China; 2. Beijing Key Laboratory of Special Melting and Preparation of High-end Metal Materials,Beijing 100083, China; 3. Shandong Tianwu Forming Technology Co., Ltd., Liaocheng 252024, China... to facilitate weighing. Iron oxide on the surface of steel blocks was removed by sandpaper. Pre-melted slags were prepared with analytical reagent powders (Sinopharm Chemical Reagent Co., Ltd.) of CaO......
