Issue 89



2    Nguyen Van Sua: World stainless steel production in 2019

5    Nguyen Duc Khien: Science must be the motivity of development

9    Nguyen Van Sua: Vietnam steel industry in the quarter 1-2020


13  Nguyen Duc Khien: The threshold of air pollution in Hanoi has never been higher



32  Nguyen Thi Hoang Oanh, Nguyen Hoang Viet: Microstructure and hardness of white cast iron Fe-12.8Cr-3.2C after heat treatment

36  Duong Ngoc Binh, Kieu Quang Phuc: Copper recovery from organic extractant

41  Nguyen Thi Van Thanh, Ngo Minh Tien: Improvement of corro- sion resistance for aluminium alloy B95 by two-stage aging

47  Duong Ngoc Binh, Bui Duc Long: Synthesis and characteriza- tion of Cu1.6Bi4.6S8 thermal electric compound