Open AccessTHE STRUCTURAL CHANGES OF Au-Ge-Ni FILMS DURING HEATING
Author(s) -
Suichu Luo,
Qin Da-cheng,
Ziqin Wang
Publication year - 1982
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.31.1401
Subject(s) - materials science , solid solution , supersaturation , chemical engineering , morphology (biology) , metallurgy , chemistry , engineering , organic chemistry , biology , genetics
The structural changes and the morphology of the evaporated Au-11.4 wt%Ge-4.8 wt%Ni films during heating have been studied by TEM. The structure of the as-evaporated film is a supersaturated Au solid solution and after more than 10 minutes anealling above 300℃ the film decomposes into Au solid solution and NiGe compound. In-situ observations in the heating stage of HVEM have revealed that the NiGe grains with size near 2000 A are dissolved into the Au solid solution in 2 seconds during heating to about 500℃. The remaining NiGe grains in the film prevent the balling process of the Au solid solution films occuring above 500℃.