PROPERTIES OF W/Cu FGMs CONTAINING 1%TiC OR 1%La2O3 PREPARED USING GSUHP
来源期刊：Acta Metallurgica Sinica2007年第1期
论文作者：C.C. Ge K. Zhang W.P. Shen
Key words：W/Cu; FGMs (functionally gradient materials); GSUHP (graded sintering under ultra-high pressure); shearing strength,thermal-shock resistance;
Abstract: 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.
C.C. Ge1，K. Zhang1，W.P. Shen1
(1.Laboratory of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, Beijing 100083, China)
Abstract: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.
Key words:W/Cu; FGMs (functionally gradient materials); GSUHP (graded sintering under ultra-high pressure); shearing strength,thermal-shock resistance;
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