9JOHNSON J L,GERMAN R M.Solid-state contributions to densification during liquid-phase sintering[J].Metallurgical and Materials Transactions B,1996,27(6):901-909.
10MOON I H,LEE J S.Activated sintering of tungstencopper contact materials powder metallurgy[J].Scripta Metallurgica,1979,13(1):5-7.
