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用,经10~40 s加热,Ta-W涂层使加热区熔透深度从无涂层基体的190~250 μm明显减少至125~180 μm,非加热区平均温度从无涂层基体的350~900 ℃大幅降低至250~500 ℃.由于加热区边缘温度低,温差大,熔体流动性差,利于孔洞及低熔点Al元素富集区的形成,在循环热应力作用下,该区域易成为表面横向和纵向裂纹策源地.钛合金基体加热后熔化层成分偏析严重,形成富Al带,富Mo和Fe...热,冷却,树枝晶组织成分偏析明显,枝晶中先凝固高熔点Ti元素富集(见表1位置5,7,8,10,14,钛含量偏高),晶间低熔点Al元素富集(表1位置6,9,11,13,铝含量明显偏高).加热过程中可出现富Mo,Fe区域(见图7(h)中"白色"颗粒,表1位置12钼和铁含量分别为42.4%和13.9% (质量分数)).加热后,基体表面O含量为20.0%左右(见表1中1~4位置),内部O含量在4.0%以内......
备方法,以达到仿生贝壳构型精细化的要求. 参考文献: [1] 温燕宁, 肖来荣, 张喜民, 等. Cu-Zn-Al-Ni合金的组织与性能[J]. 中南大学学报(自然科学版), 2011, 42(4): 75-80. WEN Yanning, XIAO Lairong, ZHANG Ximin, et al. Microstructures and properties of Cu-Zn-Al-Ni... of bulk ultrafine grained Cu by nacre-inspired lamellar structure[J]. Journal of Alloys and Compounds, 2020, 826: 154234. [44] SPACKMAN C C, PICHA K C, GROSS G J, et al. A novel multimaterial additive......
and long-term durability invivo of Mg-Nd-Zn-Zr alloy for vascular stent application [J]. Journal of Alloys and Compounds, 2017, 720: 245-253. [21] Verma D K, Kumar B, Kavita, Rastogi R B. Zinc oxide......
resolution. Field emission scanning electron microscopy (FE-SEM) images were obtained with Hitachi S-3000N instrument. Transmission electron microscopy (TEM) was obtained from a JEM-1011 instrument...+ DJMTs Field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD), and trans- mission electron microscopy (TEM) were adopted to characterize the morphology and structure......
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... from a Sb-Fe mixed solution by hydrolysis and application in the hydrometallurgical process of antimony extraction [J]. Separation and Purification Technology, 2019, 228: 115753. [8] CORBY G Anderson......
is the angle between [uvw]C and [uvw]Fe. This method has been widely used to study the heterogeneous nucleation between composite inclusion particles, the heterogeneous nucleation of metal phases... crystals in as-cast ferritic stainless steel could be significantly increased by the Mg-Ti interaction. PARK et al [17] and KIM et al [18] observed the atomic arrangement on MgAl2O4-TiN and TiN-δ-Fe......
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... the following impurities: Mn<3×10-4 wt %; Mg, Cr, V, Cu<5×10-4 wt%; Si, Fe Ni, Pb, Sn, Ti, Al, Mo, Sn<1×10-3 wt%; Co<3×10-3 wt%; Nb, Zr< 5×10-3 wt%; Ca<3×10-2 wt%. These amounts comply......
alloy slurry using response surface methodology [J]. J Alloys Compd, 2017, 725: 673-683. DOI: 10.1016/J.JALLCOM.2017.07.169. [42] TIAN X, ZHAO J, ZHAO J, GONG Z, DONG Y. Effect of cutting speed......
was decreased with increasing basicity, and the content of MgO and CaF2, whereas it was increased by increasing the content of Al2O3 in the slag. They found that the lowest oxygen content in Fe-O alloy..., the value of kO is 9.1×10-5 m/s for the [Al]-[O] reaction in G20CrNi2Mo bearing steel [25]; while the value of kO is 6×10-4 m/s for the [Al]-[O] reaction in 99.96%Fe-0.04%Al alloys [26]. Since the actual......
, CHEN Chong. Process of aluminum dross recycling and life cycle assessment for Al-Si alloys and brown fused alumina [J]. Transactions of Nonferrous Metals Society of China, 2010, 20(11): 2155-2161......
