Issue 58


2  Lunar New Year message from Editor office


3  VNFMSTA: Overview  of activities in 2014  and  toward  to 2015

6  Nguyen Van Sua: The world pig iron output  in 2014

8  Pham Chi Cuong: Looking back  to last year  to direct toward the future of steel industry

10  Nguyen Van Sua: Production and  consumption of steels in January, 2015

12  “Nuclear materials engineering” – a new training program of the School of Materials  and  Science and  Engineering, HUST



25 Nguyen Van Tu, Trinh Van Trung, Nguyen Van Thanh: Preparation and characterization of activated carbon from rice husk  by Na2CO3 and K2CO3  activation

30  Le Thi Chieu, Nguyen Duong Nam, Trieu Khuong: Influence of supply  mode  for nitrocarburizing gas  on  the  microstruc- ture and  the hardness of nitrocarburizing layer

34  Trinh Van Trung, Phung Thi To Hang: Temper embrittlement and influence  of tempering temperature on microstructure and  mechanical properties of C45 and  40Cr steels

41  Ngo Xuan Hung, Dang Van Hao, Le Thi Chieu: Reduction process of titanium  metal  from Vietnam’s  TiO2  by thermic  method, using calcium and magnesium as reduction mixture


47  Nguyen Duc Khien: The key factors  affecting the toxicity