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

金属学报(英文版), 2007, 20(1): 59-64.

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1.Laboratory of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

2.Laboratory of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

3.Laboratory of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

基金项目: 国家高技术研究发展计划(863计划)(2003AA305340)

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

Keywords： W/Cu

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-shack resistance (1000 times); the specimens that contained 1%La2O3were 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.

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

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