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; (4) 式中:是温度T下的标准摩尔焓变,=1.1 MJ/mol；是温度T下的标准摩尔熵变,= 193.8 MJ/(K·mol)；定压比热容cp=a+bT+cT2,经验参数a,b,c见表1. 表1 ZrO2,Zr和O2定压比热容cp的经验参数[14, 16] Table 1 Empirical constants of heat capacity of ZrO2......
A, GUGLIELMI P, MICHELE G D. Warm hydroforming of the heat treatable aluminium alloy AC170PX [J]. Journal of Manufacturing Processes, 2015, 20: 24-32. [6] TRZEPIECINSKI T, MALINOWSKI T, PIEJA T......
with energy dispersive spectrometry (SEM/EDS, Oxford Instruments, INCA). 3 Results 3.1 Microstructure The microstructures of the both alloys after heat-treatment are shown in Fig. 1. Both alloys primarily...;8 mm × 3 mm were cut from the heat treated ingot, and polished to a 2000-grit SiC paper, then degreased in acetone, ultrasonically cleaned in alcohol, and finally dried in air. Table 1......
might be further improved by carefully adjusting the alloy composition or introducing heat-treatment [26]. The feasible approaches include improving the mechanical properties of the BCC phase... A. Classification of bulk metallic glasses by atomic size difference, heat of mixing and period of constituent elements and its application to characterization of the main alloying element [J]. Materials......
used paving material for highway construction, is conventionally prepared by blending aggregates, asphalt binder, and fillers together in elevated temperature with tremendous heat energy [1, 2]. While......
, CHAABANE ELAOUD S, AMMAR S, ABDELHEDI R. Electrochemical degradation of 4-chloroguaiacol for wastewater treatment using PbO2 anodes[J]. Journal of Hazardous Materials, 2006, 138(3): 614?619. [6] 艾仕云, 彭惠琦......
: 102-105.CHEN Zhen-hua, XIA Wei-jun, CHEN Ji-hua, YAN Hong-ge, CHEN Ding, TEN Jie, ZHANG Hao, HE Yi-qiang, SHEN Shao-ding. Heat-proof Magnesium alloy[M]. Beijing: Chemical Industry Press, 2007: 102-105. [6... of diffusion bonding for superplasticity magnesium alloys with the fore and post treatment[C]//ZHANG K F. 9th International Conference on Superplasticity in Advanced Materials. Chengdu: 2006: 169-172. [37] YU Y......
: 837-844. [7] LIAO C N, WEI C T. Effect of intermetallic compound formation on electrical properties of Cu/Sn interface during thermal treatment [J]. J Electron Mater, 2004, 33: 1137-1143. [8......
of AZ31 samples immersed in mixed solution of 0.042 mol/L Ca(NO3)2 and 0.025 mol/L NH4H2PO4 with pH value of 5.5 for 48 h: (a) Pre-soaked in Ca(OH)2 saturated solution for 12 h; (b) After treatment...-cheng, LI Long-chuan, WANG Yong. Surface modification on magnesium by alkali-heat-treatmentand its corrosion behaviors in SBF[J]. The Chinese Journal of Nonferrous Metals, 2004, 14(9): 1508-1513......
),实验温度为900 ℃,时间为25 h.实验结果(见表12)表明,GH2984合金的抗热腐蚀性能比GH2135合金的好,与GH1140合金的相当,远远优于镍基铸造高温合金K403的,如表12所列[16]. 另外,GH2984合金的抗晶间腐蚀性能优异,在各种不同热处理状态或焊接后都不发生晶界腐蚀. 表12 几种合金的热腐蚀试验质量损失[15] Table 12 Heat... Research, CAS, 2000. [13] 殷为民, 郭建亭, 王淑荷. 固溶处理温度对定向凝固高温合金DZ417G的组织和性能的影响[J]. 金属学报, 1995, 31(增刊): S312-315. YIN Wei-min, GUO Jian-ting, WANG Shu-he. Effect of solid solution treatment temperature......
