XU Huibin TAN Shusong Technische Universitat Berlin
,
FRG XU Huibin Dipl.-Ing
,
FB9
,
Physikalische Ingenieurwissenschaft
,
HF1
,
TU Berlin
,
1000 Berlin 12
,
FRG
金属学报(英文版)
The radiation of material surface by high intensity laser beams is used to produce the uhrafine powder of pure Fe and ZrO_2.The morphology,size and phases of the powder were examined by X-ray diffraetometer,scanning electron microscopy as well as transmission electron microscopy.In pure Fe a considerable quantity of γ-phase was found in the powder.In ZrO_2 powder,instead of stable phase,two metastable phases appeared.
关键词:
laser beam
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null
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null
黄延禄
,
李建国
,
梁工英
,
苏俊义
稀有金属材料与工程
引入经典光学理论计算激光束与粉末流的相互作用,藉此研究了送粉速率对工件表面激光强度分布和不同位置颗粒温度的影响.计算结果表明:随送粉速率的增加,激光强度以及颗粒温度的最高值都显著降低;同时,激光强度分布和不同位置颗粒温度趋于均匀.由于对激光熔池中动力学过程的潜在影响,这些结果应在描述激光熔覆过程的数学模型中加以考虑.
关键词:
送粉激光熔覆
,
激光束
,
粉料流
,
相互作用
