late 1999 to early 2000 (and backfills for previous years) / DB reference years
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Author Guo Zuoxing. Hu Jiandong. Zhou Zhenfeng.
Source Journal of Materials Science. v. 34 no21, Nov. 1 1999, p. 5403-6.
Abstract An investigation of the effect of laser sintering on the properties of Cu-Sn-C system P/M alloys sintered by laser is presented. Desirable properties include density, impact toughness, hardness, and wear resistance of the laser-sintered materials. Values for maximum impact toughness are provided, and it is found that the wear resistance of the laser-sintered materials are significantly increased in comparison with conventional sintering. XX