材料期刊网

添加1%TiC和1%La2O3钨/铜FGM的性能研究

张珂 , 沈卫平 , 葛昌纯

稀有金属 doi:10.3969/j.issn.0258-7076.2006.z2.022

通过超高压力通电烧结制备了添加1%TiC和1%La2O3的W/Cu FGM,研究了其烧结、层间剪切强度及抗热冲击性能;此功能梯度材料气孔率在11%左右;在激光功率密度200 mW·m-2下,对此材料进行激光热冲击试验,冲击1000次,含1%La2O3钨-铜梯度材料表面没有损坏,而含1%TiC钨-铜梯度材料表面出现裂纹.并对此材料抗热冲击现象进行了简要分析.

关键词: W/Cu , FGM , TiC , La2O3 , 层间剪切强度 , 抗热冲击性能

PROPERTIES OF W/Cu FGMS CONTAINING 1%TiC OR 1%La2O3 PREPARED USING GSUHP

K. Zhang , W.P. Shen , C.C. Ge , null , null

金属学报(英文版)

W / Cu functionally gradient materials (FGMs) containing 1% La2O3 and 1% TiC were prepared using graded sintering under ultra-high pressure (GSUHP). The specimens have been found to exhibit low porosity (11.57% and 11.35%, respectively). Shearing strength of the specimens between layers is good. Moreover, the specimens have still demonstrated good performance in testing thermal-shock resistance. When power density of laser is 200MWm-2, the specimens have been tested for thermal-shock resistance (1000 times); the specimens that contained 1% La2O3 were not subjected to damage, whereas those that contained 1% TiC began to crack. Finally, effect of additives on thermal-shock resistance was also preliminarily discussed.

关键词: W/Cu , null , null , null

机械合金化法制备W-Cu合金粉末的研究

李晓杰 , 王占磊

材料与冶金学报 doi:10.3969/j.issn.1671-6620.2009.03.007

将W80Cu20(n(W):n(Cu)=4:1)混合粉末在QM-BP式行星式高能球磨机中球磨进行机械合金化,研究了不同球磨时间对W-Cu混合粉末组织的影响.采用XRD和SEM对不同球磨时间的粉末进行分析,结果显示随着球磨时间的增加,混合粉末产生合金化效果不断增强,Cu固溶于W中,并且晶粒尺寸得到一定的细化.

关键词: W/Cu , 机械合金化 , 球磨

PROPERTIES OF W/Cu FGMs CONTAINING 1%TiC OR 1%La2O3 PREPARED USING GSUHP

金属学报(英文版)

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